diff --git a/.clang-format b/.clang-format
index ad9757ab..3337a740 100644
--- a/.clang-format
+++ b/.clang-format
@@ -83,4 +83,4 @@ SpacesInParentheses: false
 SpacesInSquareBrackets: false
 Standard: Cpp03
 TabWidth: 4
-UseTab: Never
\ No newline at end of file
+UseTab: Never
diff --git a/.github/workflows/build_toolchain.yml b/.github/workflows/build_toolchain.yml
index 2068730c..452dfbee 100644
--- a/.github/workflows/build_toolchain.yml
+++ b/.github/workflows/build_toolchain.yml
@@ -43,4 +43,4 @@ jobs:
           labels: ${{ steps.meta.outputs.labels }}
           platforms: linux/amd64,linux/arm64
           cache-from: type=registry,ref=flipperdevices/flipperzero-toolchain:buildcache
-          cache-to: type=registry,ref=flipperdevices/flipperzero-toolchain:buildcache,mode=max
\ No newline at end of file
+          cache-to: type=registry,ref=flipperdevices/flipperzero-toolchain:buildcache,mode=max
diff --git a/.github/workflows/check_submodules.yml b/.github/workflows/check_submodules.yml
index db3a3afb..b02f9a8d 100644
--- a/.github/workflows/check_submodules.yml
+++ b/.github/workflows/check_submodules.yml
@@ -14,4 +14,4 @@ jobs:
       with:
         path: assets/protobuf
         branch: dev
-        fetch_depth: 50
\ No newline at end of file
+        fetch_depth: 50
diff --git a/applications/about/about.c b/applications/about/about.c
index 9e3fd34e..7c8a4c69 100644
--- a/applications/about/about.c
+++ b/applications/about/about.c
@@ -149,6 +149,7 @@ const AboutDialogScreen about_screens[] = {
 const size_t about_screens_count = sizeof(about_screens) / sizeof(AboutDialogScreen);
 
 int32_t about_settings_app(void* p) {
+    UNUSED(p);
     DialogsApp* dialogs = furi_record_open("dialogs");
     DialogMessage* message = dialog_message_alloc();
 
diff --git a/applications/accessor/accessor.cpp b/applications/accessor/accessor.cpp
index 000c214b..d7b687ed 100644
--- a/applications/accessor/accessor.cpp
+++ b/applications/accessor/accessor.cpp
@@ -2,9 +2,10 @@
 
 // app enter function
 extern "C" int32_t accessor_app(void* p) {
+    UNUSED(p);
     AccessorApp* app = new AccessorApp();
     app->run();
     delete app;
 
     return 255;
-}
\ No newline at end of file
+}
diff --git a/applications/accessor/accessor_app.h b/applications/accessor/accessor_app.h
index ce18c177..2afd796d 100644
--- a/applications/accessor/accessor_app.h
+++ b/applications/accessor/accessor_app.h
@@ -51,4 +51,4 @@ private:
     OneWireHost* onewire_host;
 
     NotificationApp* notification;
-};
\ No newline at end of file
+};
diff --git a/applications/accessor/accessor_view_manager.cpp b/applications/accessor/accessor_view_manager.cpp
index 604e4304..f54ad62f 100644
--- a/applications/accessor/accessor_view_manager.cpp
+++ b/applications/accessor/accessor_view_manager.cpp
@@ -64,7 +64,7 @@ void AccessorAppViewManager::send_event(AccessorEvent* event) {
     furi_check(result == osOK);
 }
 
-uint32_t AccessorAppViewManager::previous_view_callback(void* context) {
+uint32_t AccessorAppViewManager::previous_view_callback(void*) {
     if(event_queue != NULL) {
         AccessorEvent event;
         event.type = AccessorEvent::Type::Back;
@@ -76,4 +76,4 @@ uint32_t AccessorAppViewManager::previous_view_callback(void* context) {
 
 void AccessorAppViewManager::add_view(ViewType view_type, View* view) {
     view_dispatcher_add_view(view_dispatcher, static_cast<uint32_t>(view_type), view);
-}
\ No newline at end of file
+}
diff --git a/applications/accessor/accessor_view_manager.h b/applications/accessor/accessor_view_manager.h
index 1e9d8e04..f2c6f2bb 100644
--- a/applications/accessor/accessor_view_manager.h
+++ b/applications/accessor/accessor_view_manager.h
@@ -36,4 +36,4 @@ private:
     // view elements
     Submenu* submenu;
     Popup* popup;
-};
\ No newline at end of file
+};
diff --git a/applications/accessor/helpers/wiegand.h b/applications/accessor/helpers/wiegand.h
index 2822d95a..8127f428 100644
--- a/applications/accessor/helpers/wiegand.h
+++ b/applications/accessor/helpers/wiegand.h
@@ -27,4 +27,4 @@ private:
     static int _wiegandType;
     static unsigned long _code;
     static unsigned long _codeHigh;
-};
\ No newline at end of file
+};
diff --git a/applications/accessor/scene/accessor_scene_generic.h b/applications/accessor/scene/accessor_scene_generic.h
index b403f152..62a4eafe 100644
--- a/applications/accessor/scene/accessor_scene_generic.h
+++ b/applications/accessor/scene/accessor_scene_generic.h
@@ -10,4 +10,4 @@ public:
     virtual void on_exit(AccessorApp* app) = 0;
 
 private:
-};
\ No newline at end of file
+};
diff --git a/applications/accessor/scene/accessor_scene_start.h b/applications/accessor/scene/accessor_scene_start.h
index 3be88bb3..1717d1e7 100644
--- a/applications/accessor/scene/accessor_scene_start.h
+++ b/applications/accessor/scene/accessor_scene_start.h
@@ -6,4 +6,4 @@ public:
     void on_enter(AccessorApp* app) final;
     bool on_event(AccessorApp* app, AccessorEvent* event) final;
     void on_exit(AccessorApp* app) final;
-};
\ No newline at end of file
+};
diff --git a/applications/applications.c b/applications/applications.c
index b9e8bbd4..4deae885 100644
--- a/applications/applications.c
+++ b/applications/applications.c
@@ -55,6 +55,7 @@ extern void crypto_on_system_start();
 extern void ibutton_on_system_start();
 extern void infrared_on_system_start();
 extern void lfrfid_on_system_start();
+extern void music_player_on_system_start();
 extern void nfc_on_system_start();
 extern void storage_on_system_start();
 extern void subghz_on_system_start();
@@ -280,6 +281,10 @@ const FlipperOnStartHook FLIPPER_ON_SYSTEM_START[] = {
     infrared_on_system_start,
 #endif
 
+#ifdef APP_MUSIC_PLAYER
+    music_player_on_system_start,
+#endif
+
 #ifdef APP_NFC
     nfc_on_system_start,
 #endif
@@ -332,7 +337,7 @@ const FlipperApplication FLIPPER_PLUGINS[] = {
 #ifdef APP_MUSIC_PLAYER
     {.app = music_player_app,
      .name = "Music Player",
-     .stack_size = 1024,
+     .stack_size = 2048,
      .icon = &A_Plugins_14,
      .flags = FlipperApplicationFlagDefault},
 #endif
diff --git a/applications/archive/archive.c b/applications/archive/archive.c
index 79f26f0e..5a38700b 100644
--- a/applications/archive/archive.c
+++ b/applications/archive/archive.c
@@ -66,6 +66,7 @@ void archive_free(ArchiveApp* archive) {
 }
 
 int32_t archive_app(void* p) {
+    UNUSED(p);
     ArchiveApp* archive = archive_alloc();
     scene_manager_next_scene(archive->scene_manager, ArchiveAppSceneBrowser);
     view_dispatcher_run(archive->view_dispatcher);
diff --git a/applications/archive/helpers/archive_apps.c b/applications/archive/helpers/archive_apps.c
index e1c429a7..f5edbbb3 100644
--- a/applications/archive/helpers/archive_apps.c
+++ b/applications/archive/helpers/archive_apps.c
@@ -7,8 +7,8 @@ static const char* known_apps[] = {
 };
 
 ArchiveAppTypeEnum archive_get_app_type(const char* path) {
-    for(size_t i = 0; i < SIZEOF_ARRAY(known_apps); i++) {
-        if(strncmp(path, known_apps[i], strlen(known_apps[i])) != STRING_FAILURE) {
+    for(size_t i = 0; i < COUNT_OF(known_apps); i++) {
+        if(strncmp(path, known_apps[i], strlen(known_apps[i])) == 0) {
             return i;
         }
     }
@@ -16,6 +16,7 @@ ArchiveAppTypeEnum archive_get_app_type(const char* path) {
 }
 
 bool archive_app_is_available(void* context, const char* path) {
+    UNUSED(context);
     furi_assert(path);
 
     ArchiveAppTypeEnum app = archive_get_app_type(path);
diff --git a/applications/archive/helpers/archive_apps.h b/applications/archive/helpers/archive_apps.h
index 5abc27a5..8bc90458 100644
--- a/applications/archive/helpers/archive_apps.h
+++ b/applications/archive/helpers/archive_apps.h
@@ -11,7 +11,7 @@ static const ArchiveFileTypeEnum app_file_types[] = {
     [ArchiveAppTypeUnknown] = ArchiveFileTypeUnknown,
 };
 
-static inline const ArchiveFileTypeEnum archive_get_app_filetype(ArchiveAppTypeEnum app) {
+static inline ArchiveFileTypeEnum archive_get_app_filetype(ArchiveAppTypeEnum app) {
     return app_file_types[app];
 }
 
diff --git a/applications/archive/helpers/archive_browser.c b/applications/archive/helpers/archive_browser.c
index b1e1e3ef..cb3d3ca8 100644
--- a/applications/archive/helpers/archive_browser.c
+++ b/applications/archive/helpers/archive_browser.c
@@ -6,7 +6,8 @@
 bool archive_is_item_in_array(ArchiveBrowserViewModel* model, uint32_t idx) {
     size_t array_size = files_array_size(model->files);
 
-    if((idx >= model->array_offset + array_size) || (idx < model->array_offset)) {
+    if((idx >= (uint32_t)model->array_offset + array_size) ||
+       (idx < (uint32_t)model->array_offset)) {
         return false;
     }
 
@@ -20,12 +21,14 @@ void archive_update_offset(ArchiveBrowserView* browser) {
         browser->view, (ArchiveBrowserViewModel * model) {
             uint16_t bounds = model->item_cnt > 3 ? 2 : model->item_cnt;
 
-            if(model->item_cnt > 3 && model->item_idx >= model->item_cnt - 1) {
+            if((model->item_cnt > 3u) && (model->item_idx >= ((int32_t)model->item_cnt - 1))) {
                 model->list_offset = model->item_idx - 3;
             } else if(model->list_offset < model->item_idx - bounds) {
-                model->list_offset = CLAMP(model->item_idx - 2, model->item_cnt - bounds, 0);
+                model->list_offset =
+                    CLAMP(model->item_idx - 2, (int32_t)model->item_cnt - bounds, 0);
             } else if(model->list_offset > model->item_idx - bounds) {
-                model->list_offset = CLAMP(model->item_idx - 1, model->item_cnt - bounds, 0);
+                model->list_offset =
+                    CLAMP(model->item_idx - 1, (int32_t)model->item_cnt - bounds, 0);
             }
 
             return true;
@@ -77,9 +80,10 @@ void archive_set_item_count(ArchiveBrowserView* browser, uint32_t count) {
     with_view_model(
         browser->view, (ArchiveBrowserViewModel * model) {
             model->item_cnt = count;
-            model->item_idx = CLAMP(model->item_idx, model->item_cnt - 1, 0);
+            model->item_idx = CLAMP(model->item_idx, (int32_t)model->item_cnt - 1, 0);
             return false;
         });
+    archive_update_offset(browser);
 }
 
 void archive_file_array_rm_selected(ArchiveBrowserView* browser) {
@@ -93,7 +97,7 @@ void archive_file_array_rm_selected(ArchiveBrowserView* browser) {
                 model->item_idx - model->array_offset,
                 model->item_idx - model->array_offset + 1);
             model->item_cnt--;
-            model->item_idx = CLAMP(model->item_idx, model->item_cnt - 1, 0);
+            model->item_idx = CLAMP(model->item_idx, (int32_t)model->item_cnt - 1, 0);
             items_cnt = model->item_cnt;
             return false;
         });
@@ -112,14 +116,14 @@ void archive_file_array_swap(ArchiveBrowserView* browser, int8_t dir) {
         browser->view, (ArchiveBrowserViewModel * model) {
             ArchiveFile_t temp;
             size_t array_size = files_array_size(model->files) - 1;
-            uint8_t swap_idx = CLAMP(model->item_idx + dir, array_size, 0);
+            uint8_t swap_idx = CLAMP((size_t)(model->item_idx + dir), array_size, 0u);
 
             if(model->item_idx == 0 && dir < 0) {
                 ArchiveFile_t_init(&temp);
                 files_array_pop_at(&temp, model->files, array_size);
                 files_array_push_at(model->files, model->item_idx, temp);
                 ArchiveFile_t_clear(&temp);
-            } else if(model->item_idx == array_size && dir > 0) {
+            } else if(((uint32_t)model->item_idx == array_size) && (dir > 0)) {
                 ArchiveFile_t_init(&temp);
                 files_array_pop_at(&temp, model->files, 0);
                 files_array_push_at(model->files, array_size, temp);
@@ -156,7 +160,7 @@ bool archive_file_array_load(ArchiveBrowserView* browser, int8_t dir) {
                 } else {
                     offset_new = model->item_idx - FILE_LIST_BUF_LEN / 4 * 1;
                 }
-                offset_new = CLAMP(offset_new, model->item_cnt - FILE_LIST_BUF_LEN, 0);
+                offset_new = CLAMP(offset_new, (int32_t)model->item_cnt - FILE_LIST_BUF_LEN, 0);
             }
             return false;
         });
@@ -195,7 +199,7 @@ ArchiveFile_t* archive_get_file_at(ArchiveBrowserView* browser, size_t idx) {
 
     with_view_model(
         browser->view, (ArchiveBrowserViewModel * model) {
-            idx = CLAMP(idx - model->array_offset, files_array_size(model->files), 0);
+            idx = CLAMP(idx - model->array_offset, files_array_size(model->files), 0u);
             selected = files_array_size(model->files) ? files_array_get(model->files, idx) : NULL;
             return false;
         });
@@ -246,6 +250,7 @@ void archive_set_tab(ArchiveBrowserView* browser, ArchiveTabEnum tab) {
         });
 }
 void archive_set_last_tab(ArchiveBrowserView* browser, ArchiveTabEnum tab) {
+    UNUSED(tab); // FIXME?
     furi_assert(browser);
 
     with_view_model(
@@ -396,8 +401,6 @@ void archive_enter_dir(ArchiveBrowserView* browser, string_t name) {
         return;
     }
 
-    archive_dir_count_items(browser, string_get_cstr(name));
-
     if(string_cmp(browser->path, name) != 0) {
         with_view_model(
             browser->view, (ArchiveBrowserViewModel * model) {
@@ -410,6 +413,7 @@ void archive_enter_dir(ArchiveBrowserView* browser, string_t name) {
         string_set(browser->path, name);
     }
 
+    archive_dir_count_items(browser, string_get_cstr(name));
     archive_switch_dir(browser, string_get_cstr(browser->path));
 }
 
diff --git a/applications/archive/helpers/archive_browser.h b/applications/archive/helpers/archive_browser.h
index 593a9be0..3395541e 100644
--- a/applications/archive/helpers/archive_browser.h
+++ b/applications/archive/helpers/archive_browser.h
@@ -42,7 +42,7 @@ static const ArchiveFileTypeEnum known_type[] = {
     [ArchiveTabBrowser] = ArchiveFileTypeUnknown,
 };
 
-static inline const ArchiveFileTypeEnum archive_get_tab_filetype(ArchiveTabEnum tab) {
+static inline ArchiveFileTypeEnum archive_get_tab_filetype(ArchiveTabEnum tab) {
     return known_type[tab];
 }
 
diff --git a/applications/archive/helpers/archive_files.c b/applications/archive/helpers/archive_files.c
index 156e66f5..3b1e8944 100644
--- a/applications/archive/helpers/archive_files.c
+++ b/applications/archive/helpers/archive_files.c
@@ -54,7 +54,7 @@ void archive_set_file_type(ArchiveFile_t* file, FileInfo* file_info, const char*
     } else {
         furi_assert(file_info);
 
-        for(size_t i = 0; i < SIZEOF_ARRAY(known_ext); i++) {
+        for(size_t i = 0; i < COUNT_OF(known_ext); i++) {
             if((known_ext[i][0] == '?') || (known_ext[i][0] == '*')) continue;
             if(string_search_str(file->name, known_ext[i], 0) != STRING_FAILURE) {
                 if(i == ArchiveFileTypeBadUsb) {
diff --git a/applications/archive/scenes/archive_scene_browser.c b/applications/archive/scenes/archive_scene_browser.c
index bcfd63ba..9df3463b 100644
--- a/applications/archive/scenes/archive_scene_browser.c
+++ b/applications/archive/scenes/archive_scene_browser.c
@@ -31,6 +31,7 @@ static void archive_loader_callback(const void* message, void* context) {
 }
 
 static void archive_run_in_app(ArchiveBrowserView* browser, ArchiveFile_t* selected) {
+    UNUSED(browser);
     Loader* loader = furi_record_open("loader");
 
     LoaderStatus status;
@@ -95,6 +96,7 @@ bool archive_scene_browser_on_event(void* context, SceneManagerEvent event) {
             if(known_app) {
                 archive_run_in_app(browser, selected);
             }
+            archive_show_file_menu(browser, false);
             consumed = true;
             break;
         case ArchiveBrowserEventFileMenuPin:
diff --git a/applications/archive/views/archive_browser_view.c b/applications/archive/views/archive_browser_view.c
index ed75621d..fc578b36 100644
--- a/applications/archive/views/archive_browser_view.c
+++ b/applications/archive/views/archive_browser_view.c
@@ -106,17 +106,17 @@ static void draw_list(Canvas* canvas, ArchiveBrowserViewModel* model) {
     size_t array_size = files_array_size(model->files);
     bool scrollbar = model->item_cnt > 4;
 
-    for(size_t i = 0; i < MIN(model->item_cnt, MENU_ITEMS); ++i) {
+    for(uint32_t i = 0; i < MIN(model->item_cnt, MENU_ITEMS); ++i) {
         string_t str_buff;
         char cstr_buff[MAX_NAME_LEN];
-        size_t idx = CLAMP(i + model->list_offset, model->item_cnt, 0);
+        int32_t idx = CLAMP((uint32_t)(i + model->list_offset), model->item_cnt, 0u);
         uint8_t x_offset = (model->move_fav && model->item_idx == idx) ? MOVE_OFFSET : 0;
 
         ArchiveFileTypeEnum file_type = ArchiveFileTypeLoading;
 
         if(archive_is_item_in_array(model, idx)) {
-            ArchiveFile_t* file =
-                files_array_get(model->files, CLAMP(idx - model->array_offset, array_size - 1, 0));
+            ArchiveFile_t* file = files_array_get(
+                model->files, CLAMP(idx - model->array_offset, (int32_t)(array_size - 1), 0));
             strlcpy(cstr_buff, string_get_cstr(file->name), string_size(file->name) + 1);
             archive_trim_file_path(cstr_buff, archive_is_known_app(file->type));
             string_init_set_str(str_buff, cstr_buff);
@@ -161,21 +161,21 @@ static void archive_render_status_bar(Canvas* canvas, ArchiveBrowserViewModel* m
     canvas_draw_box(canvas, 107, 0, 20, 13);
 
     canvas_set_color(canvas, ColorBlack);
-    canvas_draw_frame(canvas, 1, 0, 50, 12);
-    canvas_draw_line(canvas, 0, 1, 0, 11);
-    canvas_draw_line(canvas, 1, 12, 49, 12);
-    canvas_draw_str_aligned(canvas, 26, 9, AlignCenter, AlignBottom, tab_name);
+    canvas_draw_rframe(canvas, 0, 0, 51, 13, 1); // frame
+    canvas_draw_line(canvas, 49, 1, 49, 11); // shadow right
+    canvas_draw_line(canvas, 1, 11, 49, 11); // shadow bottom
+    canvas_draw_str_aligned(canvas, 25, 9, AlignCenter, AlignBottom, tab_name);
 
-    canvas_draw_frame(canvas, 108, 0, 20, 12);
-    canvas_draw_line(canvas, 107, 1, 107, 11);
-    canvas_draw_line(canvas, 108, 12, 126, 12);
+    canvas_draw_rframe(canvas, 107, 0, 21, 13, 1);
+    canvas_draw_line(canvas, 126, 1, 126, 11);
+    canvas_draw_line(canvas, 108, 11, 126, 11);
 
     if(model->move_fav) {
-        canvas_draw_icon(canvas, 111, 4, &I_ButtonUp_7x4);
-        canvas_draw_icon(canvas, 118, 4, &I_ButtonDown_7x4);
+        canvas_draw_icon(canvas, 110, 4, &I_ButtonUp_7x4);
+        canvas_draw_icon(canvas, 117, 4, &I_ButtonDown_7x4);
     } else {
-        canvas_draw_icon(canvas, 112, 2, &I_ButtonLeft_4x7);
-        canvas_draw_icon(canvas, 120, 2, &I_ButtonRight_4x7);
+        canvas_draw_icon(canvas, 111, 2, &I_ButtonLeft_4x7);
+        canvas_draw_icon(canvas, 119, 2, &I_ButtonRight_4x7);
     }
 
     canvas_set_color(canvas, ColorWhite);
@@ -216,7 +216,7 @@ static bool is_file_list_load_required(ArchiveBrowserViewModel* model) {
     }
 
     if(((model->array_offset + array_size) < model->item_cnt) &&
-       (model->item_idx > (model->array_offset + array_size - FILE_LIST_BUF_LEN / 4))) {
+       (model->item_idx > (int32_t)(model->array_offset + array_size - FILE_LIST_BUF_LEN / 4))) {
         return true;
     }
 
@@ -347,7 +347,7 @@ ArchiveBrowserView* browser_alloc() {
     browser->view = view_alloc();
     view_allocate_model(browser->view, ViewModelTypeLocking, sizeof(ArchiveBrowserViewModel));
     view_set_context(browser->view, browser);
-    view_set_draw_callback(browser->view, (ViewDrawCallback)archive_view_render);
+    view_set_draw_callback(browser->view, archive_view_render);
     view_set_input_callback(browser->view, archive_view_input);
 
     string_init(browser->path);
@@ -376,4 +376,4 @@ void browser_free(ArchiveBrowserView* browser) {
 
     view_free(browser->view);
     free(browser);
-}
\ No newline at end of file
+}
diff --git a/applications/archive/views/archive_browser_view.h b/applications/archive/views/archive_browser_view.h
index 3aabe962..db079d6b 100644
--- a/applications/archive/views/archive_browser_view.h
+++ b/applications/archive/views/archive_browser_view.h
@@ -13,8 +13,8 @@
 #define MAX_NAME_LEN 255
 #define MAX_EXT_LEN 6
 #define FRAME_HEIGHT 12
-#define MENU_ITEMS 4
-#define MOVE_OFFSET 5
+#define MENU_ITEMS 4u
+#define MOVE_OFFSET 5u
 
 typedef enum {
     ArchiveTabFavorites,
diff --git a/applications/bad_usb/scenes/bad_usb_scene_file_select.c b/applications/bad_usb/scenes/bad_usb_scene_file_select.c
index b1ab3194..82f03bab 100644
--- a/applications/bad_usb/scenes/bad_usb_scene_file_select.c
+++ b/applications/bad_usb/scenes/bad_usb_scene_file_select.c
@@ -31,10 +31,13 @@ void bad_usb_scene_file_select_on_enter(void* context) {
 }
 
 bool bad_usb_scene_file_select_on_event(void* context, SceneManagerEvent event) {
+    UNUSED(context);
+    UNUSED(event);
     // BadUsbApp* bad_usb = context;
     return false;
 }
 
 void bad_usb_scene_file_select_on_exit(void* context) {
+    UNUSED(context);
     // BadUsbApp* bad_usb = context;
 }
diff --git a/applications/bad_usb/views/bad_usb_view.c b/applications/bad_usb/views/bad_usb_view.c
index 22e5143d..5b6fe6e8 100644
--- a/applications/bad_usb/views/bad_usb_view.c
+++ b/applications/bad_usb/views/bad_usb_view.c
@@ -142,6 +142,7 @@ void bad_usb_set_ok_callback(BadUsb* bad_usb, BadUsbOkCallback callback, void* c
     furi_assert(callback);
     with_view_model(
         bad_usb->view, (BadUsbModel * model) {
+            UNUSED(model);
             bad_usb->callback = callback;
             bad_usb->context = context;
             return true;
diff --git a/applications/bt/bt_cli.c b/applications/bt/bt_cli.c
index 64d69a12..1c9b198b 100644
--- a/applications/bt/bt_cli.c
+++ b/applications/bt/bt_cli.c
@@ -13,6 +13,9 @@ static const char* bt_cli_address_types[] = {
 };
 
 static void bt_cli_command_hci_info(Cli* cli, string_t args, void* context) {
+    UNUSED(cli);
+    UNUSED(args);
+    UNUSED(context);
     string_t buffer;
     string_init(buffer);
     furi_hal_bt_dump_state(buffer);
@@ -21,6 +24,7 @@ static void bt_cli_command_hci_info(Cli* cli, string_t args, void* context) {
 }
 
 static void bt_cli_command_carrier_tx(Cli* cli, string_t args, void* context) {
+    UNUSED(context);
     int channel = 0;
     int power = 0;
 
@@ -47,6 +51,7 @@ static void bt_cli_command_carrier_tx(Cli* cli, string_t args, void* context) {
 }
 
 static void bt_cli_command_carrier_rx(Cli* cli, string_t args, void* context) {
+    UNUSED(context);
     int channel = 0;
 
     do {
@@ -63,7 +68,7 @@ static void bt_cli_command_carrier_rx(Cli* cli, string_t args, void* context) {
 
         while(!cli_cmd_interrupt_received(cli)) {
             osDelay(250);
-            printf("RSSI: %6.1f dB\r", furi_hal_bt_get_rssi());
+            printf("RSSI: %6.1f dB\r", (double)furi_hal_bt_get_rssi());
             fflush(stdout);
         }
 
@@ -72,6 +77,7 @@ static void bt_cli_command_carrier_rx(Cli* cli, string_t args, void* context) {
 }
 
 static void bt_cli_command_packet_tx(Cli* cli, string_t args, void* context) {
+    UNUSED(context);
     int channel = 0;
     int pattern = 0;
     int datarate = 1;
@@ -115,6 +121,7 @@ static void bt_cli_command_packet_tx(Cli* cli, string_t args, void* context) {
 }
 
 static void bt_cli_command_packet_rx(Cli* cli, string_t args, void* context) {
+    UNUSED(context);
     int channel = 0;
     int datarate = 1;
 
@@ -133,11 +140,9 @@ static void bt_cli_command_packet_rx(Cli* cli, string_t args, void* context) {
         printf("Press CTRL+C to stop\r\n");
         furi_hal_bt_start_packet_rx(channel, datarate);
 
-        float rssi_raw = 0;
         while(!cli_cmd_interrupt_received(cli)) {
             osDelay(250);
-            rssi_raw = furi_hal_bt_get_rssi();
-            printf("RSSI: %03.1f dB\r", rssi_raw);
+            printf("RSSI: %03.1f dB\r", (double)furi_hal_bt_get_rssi());
             fflush(stdout);
         }
         uint16_t packets_received = furi_hal_bt_stop_packet_test();
@@ -152,6 +157,8 @@ static void bt_cli_scan_callback(GapAddress address, void* context) {
 }
 
 static void bt_cli_command_scan(Cli* cli, string_t args, void* context) {
+    UNUSED(context);
+    UNUSED(args);
     osMessageQueueId_t queue = osMessageQueueNew(20, sizeof(GapAddress), NULL);
     furi_hal_bt_start_scan(bt_cli_scan_callback, queue);
 
@@ -189,6 +196,7 @@ static void bt_cli_print_usage() {
 }
 
 static void bt_cli(Cli* cli, string_t args, void* context) {
+    UNUSED(context);
     furi_record_open("bt");
 
     string_t cmd;
diff --git a/applications/bt/bt_debug_app/bt_debug_app.c b/applications/bt/bt_debug_app/bt_debug_app.c
index a4363b91..58119f5d 100644
--- a/applications/bt/bt_debug_app/bt_debug_app.c
+++ b/applications/bt/bt_debug_app/bt_debug_app.c
@@ -19,10 +19,12 @@ void bt_debug_submenu_callback(void* context, uint32_t index) {
 }
 
 uint32_t bt_debug_exit(void* context) {
+    UNUSED(context);
     return VIEW_NONE;
 }
 
 uint32_t bt_debug_start_view(void* context) {
+    UNUSED(context);
     return BtDebugAppViewSubmenu;
 }
 
@@ -94,6 +96,7 @@ void bt_debug_app_free(BtDebugApp* app) {
 }
 
 int32_t bt_debug_app(void* p) {
+    UNUSED(p);
     if(furi_hal_bt_get_radio_stack() != FuriHalBtStackHciLayer) {
         FURI_LOG_E(TAG, "Incorrect radio stack, replace with HciLayer for tests.");
         DialogsApp* dialogs = furi_record_open("dialogs");
diff --git a/applications/bt/bt_debug_app/views/bt_carrier_test.c b/applications/bt/bt_debug_app/views/bt_carrier_test.c
index 22b80cd8..0e0b3792 100755
--- a/applications/bt/bt_debug_app/views/bt_carrier_test.c
+++ b/applications/bt/bt_debug_app/views/bt_carrier_test.c
@@ -141,7 +141,7 @@ BtCarrierTest* bt_carrier_test_alloc() {
     param = bt_test_param_add(
         bt_carrier_test->bt_test,
         "Mode",
-        SIZEOF_ARRAY(bt_param_mode),
+        COUNT_OF(bt_param_mode),
         bt_carrier_test_mode_changed,
         bt_carrier_test);
     bt_test_set_current_value_index(param, 0);
@@ -151,7 +151,7 @@ BtCarrierTest* bt_carrier_test_alloc() {
     param = bt_test_param_add(
         bt_carrier_test->bt_test,
         "Channel",
-        SIZEOF_ARRAY(bt_param_channel),
+        COUNT_OF(bt_param_channel),
         bt_carrier_test_channel_changed,
         bt_carrier_test);
     bt_test_set_current_value_index(param, 0);
@@ -162,7 +162,7 @@ BtCarrierTest* bt_carrier_test_alloc() {
     param = bt_test_param_add(
         bt_carrier_test->bt_test,
         "Power",
-        SIZEOF_ARRAY(bt_param_power),
+        COUNT_OF(bt_param_power),
         bt_carrier_test_param_channel,
         bt_carrier_test);
     bt_test_set_current_value_index(param, 0);
diff --git a/applications/bt/bt_debug_app/views/bt_packet_test.c b/applications/bt/bt_debug_app/views/bt_packet_test.c
index e9d3883a..e9b3bd75 100644
--- a/applications/bt/bt_debug_app/views/bt_packet_test.c
+++ b/applications/bt/bt_debug_app/views/bt_packet_test.c
@@ -109,7 +109,7 @@ BtPacketTest* bt_packet_test_alloc() {
     param = bt_test_param_add(
         bt_packet_test->bt_test,
         "Mode",
-        SIZEOF_ARRAY(bt_param_mode),
+        COUNT_OF(bt_param_mode),
         bt_packet_test_mode_changed,
         bt_packet_test);
     bt_test_set_current_value_index(param, 0);
@@ -119,7 +119,7 @@ BtPacketTest* bt_packet_test_alloc() {
     param = bt_test_param_add(
         bt_packet_test->bt_test,
         "Channel",
-        SIZEOF_ARRAY(bt_param_channel),
+        COUNT_OF(bt_param_channel),
         bt_packet_test_channel_changed,
         bt_packet_test);
     bt_test_set_current_value_index(param, 0);
@@ -129,7 +129,7 @@ BtPacketTest* bt_packet_test_alloc() {
     param = bt_test_param_add(
         bt_packet_test->bt_test,
         "Data rate",
-        SIZEOF_ARRAY(bt_param_data_rate),
+        COUNT_OF(bt_param_data_rate),
         bt_packet_test_param_channel,
         bt_packet_test);
     bt_test_set_current_value_index(param, 0);
diff --git a/applications/bt/bt_debug_app/views/bt_test.c b/applications/bt/bt_debug_app/views/bt_test.c
index ac10e0a8..70f57c12 100755
--- a/applications/bt/bt_debug_app/views/bt_test.c
+++ b/applications/bt/bt_debug_app/views/bt_test.c
@@ -99,7 +99,7 @@ static void bt_test_draw_callback(Canvas* canvas, void* _model) {
     canvas_draw_str(canvas, 6, 60, model->message);
     if(model->state == BtTestStateStarted) {
         if(model->rssi != 0.0f) {
-            snprintf(info_str, sizeof(info_str), "RSSI:%3.1f dB", model->rssi);
+            snprintf(info_str, sizeof(info_str), "RSSI:%3.1f dB", (double)model->rssi);
             canvas_draw_str_aligned(canvas, 124, 60, AlignRight, AlignBottom, info_str);
         }
     } else if(model->state == BtTestStateStopped) {
diff --git a/applications/bt/bt_hid_app/bt_hid.c b/applications/bt/bt_hid_app/bt_hid.c
index ab13f6f3..4b1037cd 100755
--- a/applications/bt/bt_hid_app/bt_hid.c
+++ b/applications/bt/bt_hid_app/bt_hid.c
@@ -33,10 +33,12 @@ void bt_hid_dialog_callback(DialogExResult result, void* context) {
 }
 
 uint32_t bt_hid_exit_confirm_view(void* context) {
+    UNUSED(context);
     return BtHidViewExitConfirm;
 }
 
 uint32_t bt_hid_exit(void* context) {
+    UNUSED(context);
     return VIEW_NONE;
 }
 
@@ -139,6 +141,7 @@ void bt_hid_app_free(BtHid* app) {
 }
 
 int32_t bt_hid_app(void* p) {
+    UNUSED(p);
     // Switch profile to Hid
     BtHid* app = bt_hid_app_alloc();
     bt_set_status_changed_callback(app->bt, bt_hid_connection_status_changed_callback, app);
diff --git a/applications/bt/bt_settings_app/bt_settings_app.c b/applications/bt/bt_settings_app/bt_settings_app.c
index d9dfa74d..cb55e931 100755
--- a/applications/bt/bt_settings_app/bt_settings_app.c
+++ b/applications/bt/bt_settings_app/bt_settings_app.c
@@ -76,6 +76,7 @@ void bt_settings_app_free(BtSettingsApp* app) {
 }
 
 extern int32_t bt_settings_app(void* p) {
+    UNUSED(p);
     BtSettingsApp* app = bt_settings_app_alloc();
     view_dispatcher_run(app->view_dispatcher);
     bt_settings_save(&app->settings);
diff --git a/applications/cli/cli.c b/applications/cli/cli.c
index 4e200d6b..eefbb305 100644
--- a/applications/cli/cli.c
+++ b/applications/cli/cli.c
@@ -130,10 +130,12 @@ void cli_motd() {
 }
 
 void cli_nl(Cli* cli) {
+    UNUSED(cli);
     printf("\r\n");
 }
 
 void cli_prompt(Cli* cli) {
+    UNUSED(cli);
     printf("\r\n>: %s", string_get_cstr(cli->line));
     fflush(stdout);
 }
@@ -451,6 +453,7 @@ void cli_session_close(Cli* cli) {
 }
 
 int32_t cli_srv(void* p) {
+    UNUSED(p);
     Cli* cli = cli_alloc();
 
     // Init basic cli commands
diff --git a/applications/cli/cli_commands.c b/applications/cli/cli_commands.c
index bdec231b..2d059bd3 100644
--- a/applications/cli/cli_commands.c
+++ b/applications/cli/cli_commands.c
@@ -12,6 +12,8 @@
 #define CLI_DATE_FORMAT "%.4d-%.2d-%.2d %.2d:%.2d:%.2d %d"
 
 void cli_command_device_info_callback(const char* key, const char* value, bool last, void* context) {
+    UNUSED(context);
+    UNUSED(last);
     printf("%-24s: %s\r\n", key, value);
 }
 
@@ -20,11 +22,14 @@ void cli_command_device_info_callback(const char* key, const char* value, bool l
  * This command is intended to be used by humans
  */
 void cli_command_device_info(Cli* cli, string_t args, void* context) {
+    UNUSED(cli);
+    UNUSED(args);
     furi_hal_info_get(cli_command_device_info_callback, context);
 }
 
 void cli_command_help(Cli* cli, string_t args, void* context) {
-    (void)args;
+    UNUSED(args);
+    UNUSED(context);
     printf("Commands we have:");
 
     // Command count
@@ -62,6 +67,9 @@ void cli_command_help(Cli* cli, string_t args, void* context) {
 }
 
 void cli_command_date(Cli* cli, string_t args, void* context) {
+    UNUSED(cli);
+    UNUSED(context);
+
     FuriHalRtcDateTime datetime = {0};
 
     if(string_size(args) > 0) {
@@ -135,6 +143,8 @@ void cli_command_log_tx_callback(const uint8_t* buffer, size_t size, void* conte
 }
 
 void cli_command_log(Cli* cli, string_t args, void* context) {
+    UNUSED(args);
+    UNUSED(context);
     StreamBufferHandle_t ring = xStreamBufferCreate(CLI_COMMAND_LOG_RING_SIZE, 1);
     uint8_t buffer[CLI_COMMAND_LOG_BUFFER_SIZE];
 
@@ -152,6 +162,8 @@ void cli_command_log(Cli* cli, string_t args, void* context) {
 }
 
 void cli_command_vibro(Cli* cli, string_t args, void* context) {
+    UNUSED(cli);
+    UNUSED(context);
     if(!string_cmp(args, "0")) {
         NotificationApp* notification = furi_record_open("notification");
         notification_message_block(notification, &sequence_reset_vibro);
@@ -166,6 +178,8 @@ void cli_command_vibro(Cli* cli, string_t args, void* context) {
 }
 
 void cli_command_debug(Cli* cli, string_t args, void* context) {
+    UNUSED(cli);
+    UNUSED(context);
     if(!string_cmp(args, "0")) {
         furi_hal_rtc_reset_flag(FuriHalRtcFlagDebug);
         loader_update_menu();
@@ -180,6 +194,8 @@ void cli_command_debug(Cli* cli, string_t args, void* context) {
 }
 
 void cli_command_led(Cli* cli, string_t args, void* context) {
+    UNUSED(cli);
+    UNUSED(context);
     // Get first word as light name
     NotificationMessage notification_led_message;
     string_t light_name;
@@ -233,6 +249,7 @@ void cli_command_led(Cli* cli, string_t args, void* context) {
 }
 
 void cli_command_gpio_set(Cli* cli, string_t args, void* context) {
+    UNUSED(context);
     char pin_names[][4] = {
         "PC0",
         "PC1",
@@ -313,6 +330,8 @@ void cli_command_gpio_set(Cli* cli, string_t args, void* context) {
                 return;
             }
         }
+#else
+        UNUSED(cli);
 #endif
 
         LL_GPIO_SetPinMode(gpio[num].port, gpio[num].pin, LL_GPIO_MODE_OUTPUT);
@@ -325,6 +344,10 @@ void cli_command_gpio_set(Cli* cli, string_t args, void* context) {
 }
 
 void cli_command_ps(Cli* cli, string_t args, void* context) {
+    UNUSED(cli);
+    UNUSED(args);
+    UNUSED(context);
+
     const uint8_t threads_num_max = 32;
     osThreadId_t threads_id[threads_num_max];
     uint8_t thread_num = osThreadEnumerate(threads_id, threads_num_max);
@@ -344,6 +367,10 @@ void cli_command_ps(Cli* cli, string_t args, void* context) {
 }
 
 void cli_command_free(Cli* cli, string_t args, void* context) {
+    UNUSED(cli);
+    UNUSED(args);
+    UNUSED(context);
+
     printf("Free heap size: %d\r\n", memmgr_get_free_heap());
     printf("Total heap size: %d\r\n", memmgr_get_total_heap());
     printf("Minimum heap size: %d\r\n", memmgr_get_minimum_free_heap());
@@ -351,10 +378,18 @@ void cli_command_free(Cli* cli, string_t args, void* context) {
 }
 
 void cli_command_free_blocks(Cli* cli, string_t args, void* context) {
+    UNUSED(cli);
+    UNUSED(args);
+    UNUSED(context);
+
     memmgr_heap_printf_free_blocks();
 }
 
 void cli_command_i2c(Cli* cli, string_t args, void* context) {
+    UNUSED(cli);
+    UNUSED(args);
+    UNUSED(context);
+
     furi_hal_i2c_acquire(&furi_hal_i2c_handle_external);
     printf("Scanning external i2c on PC0(SCL)/PC1(SDA)\r\n"
            "Clock: 100khz, 7bit address\r\n"
@@ -391,4 +426,4 @@ void cli_commands_init(Cli* cli) {
     cli_add_command(cli, "led", CliCommandFlagDefault, cli_command_led, NULL);
     cli_add_command(cli, "gpio_set", CliCommandFlagDefault, cli_command_gpio_set, NULL);
     cli_add_command(cli, "i2c", CliCommandFlagDefault, cli_command_i2c, NULL);
-}
+}
\ No newline at end of file
diff --git a/applications/cli/cli_commands.h b/applications/cli/cli_commands.h
index b82dae29..184eeb37 100644
--- a/applications/cli/cli_commands.h
+++ b/applications/cli/cli_commands.h
@@ -2,4 +2,4 @@
 
 #include "cli_i.h"
 
-void cli_commands_init(Cli* cli);
\ No newline at end of file
+void cli_commands_init(Cli* cli);
diff --git a/applications/cli/cli_vcp.c b/applications/cli/cli_vcp.c
index f570aee1..84edca18 100644
--- a/applications/cli/cli_vcp.c
+++ b/applications/cli/cli_vcp.c
@@ -86,6 +86,7 @@ static void cli_vcp_deinit() {
 }
 
 static int32_t vcp_worker(void* context) {
+    UNUSED(context);
     bool tx_idle = true;
     size_t missed_rx = 0;
     uint8_t last_tx_pkt_len = 0;
@@ -148,7 +149,7 @@ static int32_t vcp_worker(void* context) {
                 if(len > 0) {
                     furi_check(
                         xStreamBufferSend(vcp->rx_stream, vcp->data_buffer, len, osWaitForever) ==
-                        len);
+                        (size_t)len);
                 }
             } else {
 #ifdef CLI_VCP_DEBUG
@@ -275,16 +276,19 @@ static void cli_vcp_tx(const uint8_t* buffer, size_t size) {
 }
 
 static void cli_vcp_tx_stdout(void* _cookie, const char* data, size_t size) {
+    UNUSED(_cookie);
     cli_vcp_tx((const uint8_t*)data, size);
 }
 
 static void vcp_state_callback(void* context, uint8_t state) {
+    UNUSED(context);
     if(state == 0) {
         osThreadFlagsSet(furi_thread_get_thread_id(vcp->thread), VcpEvtDisconnect);
     }
 }
 
 static void vcp_on_cdc_control_line(void* context, uint8_t state) {
+    UNUSED(context);
     // bit 0: DTR state, bit 1: RTS state
     bool dtr = state & (1 << 0);
 
@@ -296,11 +300,13 @@ static void vcp_on_cdc_control_line(void* context, uint8_t state) {
 }
 
 static void vcp_on_cdc_rx(void* context) {
+    UNUSED(context);
     uint32_t ret = osThreadFlagsSet(furi_thread_get_thread_id(vcp->thread), VcpEvtRx);
     furi_check((ret & osFlagsError) == 0);
 }
 
 static void vcp_on_cdc_tx_complete(void* context) {
+    UNUSED(context);
     osThreadFlagsSet(furi_thread_get_thread_id(vcp->thread), VcpEvtTx);
 }
 
diff --git a/applications/crypto/crypto_cli.c b/applications/crypto/crypto_cli.c
index 7cd9d5cc..a5ea80f8 100644
--- a/applications/crypto/crypto_cli.c
+++ b/applications/crypto/crypto_cli.c
@@ -164,6 +164,7 @@ void crypto_cli_decrypt(Cli* cli, string_t args) {
 }
 
 void crypto_cli_has_key(Cli* cli, string_t args) {
+    UNUSED(cli);
     int key_slot = 0;
     uint8_t iv[16];
 
@@ -185,6 +186,7 @@ void crypto_cli_has_key(Cli* cli, string_t args) {
 }
 
 void crypto_cli_store_key(Cli* cli, string_t args) {
+    UNUSED(cli);
     int key_slot = 0;
     int key_size = 0;
     string_t key_type;
@@ -277,6 +279,7 @@ void crypto_cli_store_key(Cli* cli, string_t args) {
 }
 
 static void crypto_cli(Cli* cli, string_t args, void* context) {
+    UNUSED(context);
     string_t cmd;
     string_init(cmd);
 
diff --git a/applications/debug_tools/blink_test.c b/applications/debug_tools/blink_test.c
index 35f9f434..2efaa4da 100644
--- a/applications/debug_tools/blink_test.c
+++ b/applications/debug_tools/blink_test.c
@@ -27,6 +27,7 @@ static void blink_test_update(void* ctx) {
 }
 
 static void blink_test_draw_callback(Canvas* canvas, void* ctx) {
+    UNUSED(ctx);
     canvas_clear(canvas);
     canvas_set_font(canvas, FontPrimary);
     canvas_draw_str(canvas, 2, 10, "Blink application");
@@ -41,6 +42,7 @@ static void blink_test_input_callback(InputEvent* input_event, void* ctx) {
 }
 
 int32_t blink_test_app(void* p) {
+    UNUSED(p);
     osMessageQueueId_t event_queue = osMessageQueueNew(8, sizeof(BlinkEvent), NULL);
 
     // Configure view port
diff --git a/applications/debug_tools/display_test/display_test.c b/applications/debug_tools/display_test/display_test.c
index 1a9a0e43..95aea1de 100644
--- a/applications/debug_tools/display_test/display_test.c
+++ b/applications/debug_tools/display_test/display_test.c
@@ -70,10 +70,12 @@ static void display_test_submenu_callback(void* context, uint32_t index) {
 }
 
 static uint32_t display_test_previous_callback(void* context) {
+    UNUSED(context);
     return DisplayTestViewSubmenu;
 }
 
 static uint32_t display_test_exit_callback(void* context) {
+    UNUSED(context);
     return VIEW_NONE;
 }
 
@@ -210,6 +212,7 @@ void display_test_free(DisplayTest* instance) {
 }
 
 int32_t display_test_run(DisplayTest* instance) {
+    UNUSED(instance);
     view_dispatcher_switch_to_view(instance->view_dispatcher, DisplayTestViewSubmenu);
     view_dispatcher_run(instance->view_dispatcher);
 
@@ -217,6 +220,8 @@ int32_t display_test_run(DisplayTest* instance) {
 }
 
 int32_t display_test_app(void* p) {
+    UNUSED(p);
+
     DisplayTest* instance = display_test_alloc();
 
     int32_t ret = display_test_run(instance);
diff --git a/applications/debug_tools/display_test/view_display_test.c b/applications/debug_tools/display_test/view_display_test.c
index cc5f5dcf..133195d0 100644
--- a/applications/debug_tools/display_test/view_display_test.c
+++ b/applications/debug_tools/display_test/view_display_test.c
@@ -13,6 +13,7 @@ struct ViewDisplayTest {
 };
 
 static void view_display_test_draw_callback_intro(Canvas* canvas, void* _model) {
+    UNUSED(_model);
     canvas_draw_str(canvas, 12, 24, "Use < and > to switch tests");
     canvas_draw_str(canvas, 12, 36, "Use ^ and v to switch size");
     canvas_draw_str(canvas, 32, 48, "Use (o) to flip");
diff --git a/applications/debug_tools/keypad_test.c b/applications/debug_tools/keypad_test.c
index ae980317..705a1542 100644
--- a/applications/debug_tools/keypad_test.c
+++ b/applications/debug_tools/keypad_test.c
@@ -60,6 +60,7 @@ static void keypad_test_input_callback(InputEvent* input_event, void* ctx) {
 }
 
 int32_t keypad_test_app(void* p) {
+    UNUSED(p);
     osMessageQueueId_t event_queue = osMessageQueueNew(32, sizeof(InputEvent), NULL);
     furi_check(event_queue);
 
diff --git a/applications/debug_tools/text_box_test.c b/applications/debug_tools/text_box_test.c
index 1c7ce18b..bc56e88b 100644
--- a/applications/debug_tools/text_box_test.c
+++ b/applications/debug_tools/text_box_test.c
@@ -70,6 +70,7 @@ static void text_box_test_input_callback(InputEvent* input_event, void* ctx) {
 }
 
 int32_t text_box_test_app(void* p) {
+    UNUSED(p);
     osMessageQueueId_t event_queue = osMessageQueueNew(32, sizeof(InputEvent), NULL);
     furi_check(event_queue);
 
@@ -90,7 +91,7 @@ int32_t text_box_test_app(void* p) {
     Gui* gui = furi_record_open("gui");
     gui_add_view_port(gui, view_port, GuiLayerFullscreen);
 
-    uint32_t test_renders_num = SIZEOF_ARRAY(text_box_test_render);
+    uint32_t test_renders_num = COUNT_OF(text_box_test_render);
     InputEvent event;
     while(osMessageQueueGet(event_queue, &event, NULL, osWaitForever) == osOK) {
         TextBoxTestState* state = acquire_mutex_block(&state_mutex);
diff --git a/applications/debug_tools/uart_echo.c b/applications/debug_tools/uart_echo.c
index 0e4ee1d8..206c6c06 100644
--- a/applications/debug_tools/uart_echo.c
+++ b/applications/debug_tools/uart_echo.c
@@ -80,11 +80,13 @@ static void uart_echo_view_draw_callback(Canvas* canvas, void* _model) {
 }
 
 static bool uart_echo_view_input_callback(InputEvent* event, void* context) {
-    bool consumed = false;
-    return consumed;
+    UNUSED(event);
+    UNUSED(context);
+    return false;
 }
 
 static uint32_t uart_echo_exit(void* context) {
+    UNUSED(context);
     return VIEW_NONE;
 }
 
@@ -170,7 +172,10 @@ static int32_t uart_echo_worker(void* context) {
 
             notification_message(app->notification, &sequence_notification);
             with_view_model(
-                app->view, (UartDumpModel * model) { return true; });
+                app->view, (UartDumpModel * model) {
+                    UNUSED(model);
+                    return true;
+                });
         }
     }
 
@@ -261,6 +266,7 @@ static void uart_echo_app_free(UartEchoApp* app) {
 }
 
 int32_t uart_echo_app(void* p) {
+    UNUSED(p);
     UartEchoApp* app = uart_echo_app_alloc();
     view_dispatcher_run(app->view_dispatcher);
     uart_echo_app_free(app);
diff --git a/applications/debug_tools/usb_mouse.c b/applications/debug_tools/usb_mouse.c
index 6943e189..a136375a 100644
--- a/applications/debug_tools/usb_mouse.c
+++ b/applications/debug_tools/usb_mouse.c
@@ -18,6 +18,7 @@ typedef struct {
 } UsbMouseEvent;
 
 static void usb_mouse_render_callback(Canvas* canvas, void* ctx) {
+    UNUSED(ctx);
     canvas_clear(canvas);
 
     canvas_set_font(canvas, FontPrimary);
@@ -37,6 +38,7 @@ static void usb_mouse_input_callback(InputEvent* input_event, void* ctx) {
 }
 
 int32_t usb_mouse_app(void* p) {
+    UNUSED(p);
     osMessageQueueId_t event_queue = osMessageQueueNew(8, sizeof(UsbMouseEvent), NULL);
     furi_check(event_queue);
     ViewPort* view_port = view_port_alloc();
diff --git a/applications/debug_tools/usb_test.c b/applications/debug_tools/usb_test.c
index 0e8f068f..44a17ceb 100644
--- a/applications/debug_tools/usb_test.c
+++ b/applications/debug_tools/usb_test.c
@@ -51,6 +51,7 @@ void usb_test_submenu_callback(void* context, uint32_t index) {
 }
 
 uint32_t usb_test_exit(void* context) {
+    UNUSED(context);
     return VIEW_NONE;
 }
 
@@ -113,6 +114,7 @@ void usb_test_app_free(UsbTestApp* app) {
 }
 
 int32_t usb_test_app(void* p) {
+    UNUSED(p);
     UsbTestApp* app = usb_test_app_alloc();
 
     view_dispatcher_run(app->view_dispatcher);
diff --git a/applications/debug_tools/vibro_test.c b/applications/debug_tools/vibro_test.c
index 07ce93b7..af6d336d 100644
--- a/applications/debug_tools/vibro_test.c
+++ b/applications/debug_tools/vibro_test.c
@@ -6,6 +6,7 @@
 #include <notification/notification_messages.h>
 
 void vibro_test_draw_callback(Canvas* canvas, void* ctx) {
+    UNUSED(ctx);
     canvas_clear(canvas);
     canvas_set_font(canvas, FontPrimary);
     canvas_draw_str(canvas, 2, 10, "Vibro application");
@@ -22,6 +23,7 @@ void vibro_test_input_callback(InputEvent* input_event, void* ctx) {
 }
 
 int32_t vibro_test_app(void* p) {
+    UNUSED(p);
     osMessageQueueId_t event_queue = osMessageQueueNew(8, sizeof(InputEvent), NULL);
 
     // Configure view port
diff --git a/applications/desktop/animations/animation_manager.c b/applications/desktop/animations/animation_manager.c
index ea241ec3..75d45ef7 100644
--- a/applications/desktop/animations/animation_manager.c
+++ b/applications/desktop/animations/animation_manager.c
@@ -1,6 +1,7 @@
 #include <gui/view_stack.h>
 #include <stdint.h>
 #include <furi.h>
+#include <furi_hal.h>
 #include <m-string.h>
 #include <portmacro.h>
 #include <dolphin/dolphin.h>
@@ -364,6 +365,7 @@ static bool animation_manager_is_valid_idle_animation(
 
 static StorageAnimation*
     animation_manager_select_idle_animation(AnimationManager* animation_manager) {
+    UNUSED(animation_manager);
     StorageAnimationList_t animation_list;
     StorageAnimationList_init(animation_list);
     animation_storage_fill_animation_list(&animation_list);
@@ -390,7 +392,7 @@ static StorageAnimation*
         }
     }
 
-    uint32_t lucky_number = random() % whole_weight;
+    uint32_t lucky_number = furi_hal_random_get() % whole_weight;
     uint32_t weight = 0;
 
     StorageAnimation* selected = NULL;
diff --git a/applications/desktop/animations/animation_storage.c b/applications/desktop/animations/animation_storage.c
index aa0f274b..8f2740a7 100644
--- a/applications/desktop/animations/animation_storage.c
+++ b/applications/desktop/animations/animation_storage.c
@@ -130,7 +130,7 @@ void animation_storage_fill_animation_list(StorageAnimationList_t* animation_lis
     flipper_format_free(file);
 
     // add hard-coded animations
-    for(int i = 0; i < dolphin_internal_size; ++i) {
+    for(size_t i = 0; i < dolphin_internal_size; ++i) {
         StorageAnimationList_push_back(*animation_list, (StorageAnimation*)&dolphin_internal[i]);
     }
 
@@ -142,7 +142,7 @@ StorageAnimation* animation_storage_find_animation(const char* name) {
     furi_assert(strlen(name));
     StorageAnimation* storage_animation = NULL;
 
-    for(int i = 0; i < dolphin_blocking_size; ++i) {
+    for(size_t i = 0; i < dolphin_blocking_size; ++i) {
         if(!strcmp(dolphin_blocking[i].manifest_info.name, name)) {
             storage_animation = (StorageAnimation*)&dolphin_blocking[i];
             break;
@@ -150,7 +150,7 @@ StorageAnimation* animation_storage_find_animation(const char* name) {
     }
 
     if(!storage_animation) {
-        for(int i = 0; i < dolphin_internal_size; ++i) {
+        for(size_t i = 0; i < dolphin_internal_size; ++i) {
             if(!strcmp(dolphin_internal[i].manifest_info.name, name)) {
                 storage_animation = (StorageAnimation*)&dolphin_internal[i];
                 break;
@@ -365,7 +365,7 @@ static bool animation_storage_load_bubbles(BubbleAnimation* animation, FlipperFo
         animation->frame_bubble_sequences =
             malloc(sizeof(FrameBubble*) * animation->frame_bubble_sequences_count);
 
-        uint32_t current_slot = 0;
+        int32_t current_slot = 0;
         for(int i = 0; i < animation->frame_bubble_sequences_count; ++i) {
             FURI_CONST_ASSIGN_PTR(
                 animation->frame_bubble_sequences[i], malloc(sizeof(FrameBubble)));
@@ -374,7 +374,7 @@ static bool animation_storage_load_bubbles(BubbleAnimation* animation, FlipperFo
         const FrameBubble* bubble = animation->frame_bubble_sequences[0];
         int8_t index = -1;
         for(;;) {
-            if(!flipper_format_read_uint32(ff, "Slot", &current_slot, 1)) break;
+            if(!flipper_format_read_int32(ff, "Slot", &current_slot, 1)) break;
             if((current_slot != 0) && (index == -1)) break;
 
             if(current_slot == index) {
diff --git a/applications/desktop/animations/views/bubble_animation_view.c b/applications/desktop/animations/views/bubble_animation_view.c
index 9b60d45c..380664c8 100644
--- a/applications/desktop/animations/views/bubble_animation_view.c
+++ b/applications/desktop/animations/views/bubble_animation_view.c
@@ -100,7 +100,8 @@ static const FrameBubble*
         return NULL;
     }
 
-    uint8_t index = random() % (active ? model->active_bubbles : model->passive_bubbles);
+    uint8_t index =
+        furi_hal_random_get() % (active ? model->active_bubbles : model->passive_bubbles);
     const BubbleAnimation* animation = model->current;
 
     for(int i = 0; i < animation->frame_bubble_sequences_count; ++i) {
diff --git a/applications/desktop/desktop.c b/applications/desktop/desktop.c
index 7686a145..34c169e0 100644
--- a/applications/desktop/desktop.c
+++ b/applications/desktop/desktop.c
@@ -33,6 +33,7 @@ static void desktop_loader_callback(const void* message, void* context) {
 }
 
 static void desktop_lock_icon_callback(Canvas* canvas, void* context) {
+    UNUSED(context);
     furi_assert(canvas);
     canvas_draw_icon(canvas, 0, 0, &I_Lock_8x8);
 }
@@ -298,6 +299,7 @@ static bool desktop_is_first_start() {
 }
 
 int32_t desktop_srv(void* p) {
+    UNUSED(p);
     Desktop* desktop = desktop_alloc();
 
     bool loaded = LOAD_DESKTOP_SETTINGS(&desktop->settings);
diff --git a/applications/desktop/desktop_settings/scenes/desktop_settings_scene_pin_disable.c b/applications/desktop/desktop_settings/scenes/desktop_settings_scene_pin_disable.c
index 7486d4aa..c0b3190e 100644
--- a/applications/desktop/desktop_settings/scenes/desktop_settings_scene_pin_disable.c
+++ b/applications/desktop/desktop_settings/scenes/desktop_settings_scene_pin_disable.c
@@ -53,4 +53,5 @@ bool desktop_settings_scene_pin_disable_on_event(void* context, SceneManagerEven
 }
 
 void desktop_settings_scene_pin_disable_on_exit(void* context) {
+    UNUSED(context);
 }
diff --git a/applications/desktop/desktop_settings/scenes/desktop_settings_scene_pin_error.c b/applications/desktop/desktop_settings/scenes/desktop_settings_scene_pin_error.c
index 882b8f0a..a023d6b7 100644
--- a/applications/desktop/desktop_settings/scenes/desktop_settings_scene_pin_error.c
+++ b/applications/desktop/desktop_settings/scenes/desktop_settings_scene_pin_error.c
@@ -18,6 +18,7 @@ static void pin_error_back_callback(void* context) {
 }
 
 static void pin_error_done_callback(const PinCode* pin_code, void* context) {
+    UNUSED(pin_code);
     furi_assert(context);
     DesktopSettingsApp* app = context;
     view_dispatcher_send_custom_event(app->view_dispatcher, SCENE_EVENT_EXIT);
diff --git a/applications/desktop/desktop_settings/scenes/desktop_settings_scene_pin_setup_howto.c b/applications/desktop/desktop_settings/scenes/desktop_settings_scene_pin_setup_howto.c
index 22727a7a..b8d630f2 100644
--- a/applications/desktop/desktop_settings/scenes/desktop_settings_scene_pin_setup_howto.c
+++ b/applications/desktop/desktop_settings/scenes/desktop_settings_scene_pin_setup_howto.c
@@ -41,4 +41,5 @@ bool desktop_settings_scene_pin_setup_howto_on_event(void* context, SceneManager
 }
 
 void desktop_settings_scene_pin_setup_howto_on_exit(void* context) {
+    UNUSED(context);
 }
diff --git a/applications/desktop/scenes/desktop_scene_fault.c b/applications/desktop/scenes/desktop_scene_fault.c
index b75b32aa..36c958af 100644
--- a/applications/desktop/scenes/desktop_scene_fault.c
+++ b/applications/desktop/scenes/desktop_scene_fault.c
@@ -47,5 +47,6 @@ bool desktop_scene_fault_on_event(void* context, SceneManagerEvent event) {
 }
 
 void desktop_scene_fault_on_exit(void* context) {
+    UNUSED(context);
     furi_hal_rtc_set_fault_data(0);
 }
diff --git a/applications/desktop/scenes/desktop_scene_first_start.c b/applications/desktop/scenes/desktop_scene_first_start.c
index 9563094c..dbdf8919 100644
--- a/applications/desktop/scenes/desktop_scene_first_start.c
+++ b/applications/desktop/scenes/desktop_scene_first_start.c
@@ -50,4 +50,5 @@ bool desktop_scene_first_start_on_event(void* context, SceneManagerEvent event)
 }
 
 void desktop_scene_first_start_on_exit(void* context) {
+    UNUSED(context);
 }
diff --git a/applications/desktop/scenes/desktop_scene_lock_menu.c b/applications/desktop/scenes/desktop_scene_lock_menu.c
index 11478810..a86bb184 100644
--- a/applications/desktop/scenes/desktop_scene_lock_menu.c
+++ b/applications/desktop/scenes/desktop_scene_lock_menu.c
@@ -81,4 +81,5 @@ bool desktop_scene_lock_menu_on_event(void* context, SceneManagerEvent event) {
 }
 
 void desktop_scene_lock_menu_on_exit(void* context) {
+    UNUSED(context);
 }
diff --git a/applications/desktop/scenes/desktop_scene_locked.c b/applications/desktop/scenes/desktop_scene_locked.c
index 90df2226..f4c08d32 100644
--- a/applications/desktop/scenes/desktop_scene_locked.c
+++ b/applications/desktop/scenes/desktop_scene_locked.c
@@ -109,4 +109,5 @@ bool desktop_scene_locked_on_event(void* context, SceneManagerEvent event) {
 }
 
 void desktop_scene_locked_on_exit(void* context) {
+    UNUSED(context);
 }
diff --git a/applications/desktop/scenes/desktop_scene_pin_timeout.c b/applications/desktop/scenes/desktop_scene_pin_timeout.c
index 3c267a0d..ebe825e6 100644
--- a/applications/desktop/scenes/desktop_scene_pin_timeout.c
+++ b/applications/desktop/scenes/desktop_scene_pin_timeout.c
@@ -43,4 +43,5 @@ bool desktop_scene_pin_timeout_on_event(void* context, SceneManagerEvent event)
 }
 
 void desktop_scene_pin_timeout_on_exit(void* context) {
+    UNUSED(context);
 }
diff --git a/applications/desktop/views/desktop_view_pin_timeout.c b/applications/desktop/views/desktop_view_pin_timeout.c
index d9827339..6e1e807f 100644
--- a/applications/desktop/views/desktop_view_pin_timeout.c
+++ b/applications/desktop/views/desktop_view_pin_timeout.c
@@ -51,6 +51,8 @@ static void desktop_view_pin_timeout_timer_callback(TimerHandle_t timer) {
 }
 
 static bool desktop_view_pin_timeout_input(InputEvent* event, void* context) {
+    UNUSED(event);
+    UNUSED(context);
     return true;
 }
 
diff --git a/applications/dialogs/dialogs.c b/applications/dialogs/dialogs.c
index 2c8d2418..cf4a2ad6 100644
--- a/applications/dialogs/dialogs.c
+++ b/applications/dialogs/dialogs.c
@@ -11,6 +11,7 @@ static DialogsApp* dialogs_app_alloc() {
 }
 
 static void dialogs_app_process_message(DialogsApp* app, DialogsAppMessage* message) {
+    UNUSED(app);
     switch(message->command) {
     case DialogsAppCommandFileOpen:
         message->return_data->bool_value =
@@ -25,6 +26,7 @@ static void dialogs_app_process_message(DialogsApp* app, DialogsAppMessage* mess
 }
 
 int32_t dialogs_srv(void* p) {
+    UNUSED(p);
     DialogsApp* app = dialogs_app_alloc();
     furi_record_create("dialogs", app);
 
diff --git a/applications/dialogs/dialogs.h b/applications/dialogs/dialogs.h
index 2a05ef41..9c71c098 100644
--- a/applications/dialogs/dialogs.h
+++ b/applications/dialogs/dialogs.h
@@ -132,4 +132,4 @@ void dialog_message_show_storage_error(DialogsApp* context, const char* error_te
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/applications/dialogs/dialogs_api.c b/applications/dialogs/dialogs_api.c
index 261d9d4e..c4efb287 100644
--- a/applications/dialogs/dialogs_api.c
+++ b/applications/dialogs/dialogs_api.c
@@ -70,4 +70,4 @@ void dialog_message_show_storage_error(DialogsApp* context, const char* error_te
     dialog_message_set_buttons(message, "Back", NULL, NULL);
     dialog_message_show(context, message);
     dialog_message_free(message);
-}
\ No newline at end of file
+}
diff --git a/applications/dialogs/dialogs_i.h b/applications/dialogs/dialogs_i.h
index 7b601eda..b61e10ab 100644
--- a/applications/dialogs/dialogs_i.h
+++ b/applications/dialogs/dialogs_i.h
@@ -12,4 +12,4 @@ struct DialogsApp {
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/applications/dialogs/dialogs_message.h b/applications/dialogs/dialogs_message.h
index 48324b15..d7b5fabf 100644
--- a/applications/dialogs/dialogs_message.h
+++ b/applications/dialogs/dialogs_message.h
@@ -43,4 +43,4 @@ typedef struct {
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/applications/dialogs/dialogs_module_file_select.h b/applications/dialogs/dialogs_module_file_select.h
index da012fb4..749fe9c1 100644
--- a/applications/dialogs/dialogs_module_file_select.h
+++ b/applications/dialogs/dialogs_module_file_select.h
@@ -9,4 +9,4 @@ bool dialogs_app_process_module_file_select(const DialogsAppMessageDataFileSelec
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/applications/dialogs/dialogs_module_message.h b/applications/dialogs/dialogs_module_message.h
index 189870ac..b4f1b162 100644
--- a/applications/dialogs/dialogs_module_message.h
+++ b/applications/dialogs/dialogs_module_message.h
@@ -9,4 +9,4 @@ DialogMessageButton dialogs_app_process_module_message(const DialogsAppMessageDa
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/applications/dialogs/view_holder.h b/applications/dialogs/view_holder.h
index 785ad20a..8e7db3b8 100644
--- a/applications/dialogs/view_holder.h
+++ b/applications/dialogs/view_holder.h
@@ -95,4 +95,4 @@ void view_holder_update(View* view, void* context);
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/applications/dolphin/dolphin.c b/applications/dolphin/dolphin.c
index 60068aff..47960286 100644
--- a/applications/dolphin/dolphin.c
+++ b/applications/dolphin/dolphin.c
@@ -118,6 +118,7 @@ void dolphin_event_send_wait(Dolphin* dolphin, DolphinEvent* event) {
 }
 
 void dolphin_event_release(Dolphin* dolphin, DolphinEvent* event) {
+    UNUSED(dolphin);
     if(event->flag) {
         osEventFlagsSet(event->flag, DOLPHIN_LOCK_EVENT_FLAG);
     }
@@ -149,6 +150,7 @@ static void dolphin_update_clear_limits_timer_period(Dolphin* dolphin) {
 }
 
 int32_t dolphin_srv(void* p) {
+    UNUSED(p);
     Dolphin* dolphin = dolphin_alloc();
     furi_record_create("dolphin", dolphin);
 
diff --git a/applications/dolphin/helpers/dolphin_state.h b/applications/dolphin/helpers/dolphin_state.h
index 07d0b427..3e02fb87 100644
--- a/applications/dolphin/helpers/dolphin_state.h
+++ b/applications/dolphin/helpers/dolphin_state.h
@@ -12,7 +12,7 @@ typedef struct {
 
     uint32_t flags;
     uint32_t icounter;
-    uint32_t butthurt;
+    int32_t butthurt;
     uint64_t timestamp;
 } DolphinStoreData;
 
diff --git a/applications/dolphin/passport/passport.c b/applications/dolphin/passport/passport.c
index 3df88a83..13bf086b 100644
--- a/applications/dolphin/passport/passport.c
+++ b/applications/dolphin/passport/passport.c
@@ -90,6 +90,7 @@ static void render_callback(Canvas* canvas, void* ctx) {
 }
 
 int32_t passport_app(void* p) {
+    UNUSED(p);
     osSemaphoreId_t semaphore = osSemaphoreNew(1, 0, NULL);
     furi_assert(semaphore);
 
diff --git a/applications/gpio/gpio_app.c b/applications/gpio/gpio_app.c
index 7dfce836..b5f5184a 100644
--- a/applications/gpio/gpio_app.c
+++ b/applications/gpio/gpio_app.c
@@ -95,6 +95,7 @@ void gpio_app_free(GpioApp* app) {
 }
 
 int32_t gpio_app(void* p) {
+    UNUSED(p);
     GpioApp* gpio_app = gpio_app_alloc();
 
     view_dispatcher_run(gpio_app->view_dispatcher);
diff --git a/applications/gpio/scenes/gpio_scene_test.c b/applications/gpio/scenes/gpio_scene_test.c
index 009e2ff4..b015d809 100644
--- a/applications/gpio/scenes/gpio_scene_test.c
+++ b/applications/gpio/scenes/gpio_scene_test.c
@@ -19,9 +19,12 @@ void gpio_scene_test_on_enter(void* context) {
 }
 
 bool gpio_scene_test_on_event(void* context, SceneManagerEvent event) {
+    UNUSED(context);
+    UNUSED(event);
     return false;
 }
 
 void gpio_scene_test_on_exit(void* context) {
+    UNUSED(context);
     gpio_item_configure_all_pins(GpioModeAnalog);
 }
diff --git a/applications/gpio/scenes/gpio_scene_usb_uart_config.c b/applications/gpio/scenes/gpio_scene_usb_uart_config.c
index 6fba0d1e..653a306a 100644
--- a/applications/gpio/scenes/gpio_scene_usb_uart_config.c
+++ b/applications/gpio/scenes/gpio_scene_usb_uart_config.c
@@ -28,12 +28,9 @@ static const uint32_t baudrate_list[] = {
 };
 
 bool gpio_scene_usb_uart_cfg_on_event(void* context, SceneManagerEvent event) {
-    //GpioApp* app = context;
-    bool consumed = false;
-
-    if(event.type == SceneManagerEventTypeCustom) {
-    }
-    return consumed;
+    UNUSED(context);
+    UNUSED(event);
+    return false;
 }
 
 static void line_vcp_cb(VariableItem* item) {
diff --git a/applications/gpio/usb_uart_bridge.c b/applications/gpio/usb_uart_bridge.c
index 8f27340e..f70cf640 100644
--- a/applications/gpio/usb_uart_bridge.c
+++ b/applications/gpio/usb_uart_bridge.c
@@ -101,6 +101,7 @@ static void usb_uart_vcp_init(UsbUartBridge* usb_uart, uint8_t vcp_ch) {
 }
 
 static void usb_uart_vcp_deinit(UsbUartBridge* usb_uart, uint8_t vcp_ch) {
+    UNUSED(usb_uart);
     furi_hal_cdc_set_callbacks(vcp_ch, NULL, NULL);
     FURI_LOG_I("", "Deinit %d", vcp_ch);
     if(vcp_ch != 0) {
@@ -120,6 +121,7 @@ static void usb_uart_serial_init(UsbUartBridge* usb_uart, uint8_t uart_ch) {
 }
 
 static void usb_uart_serial_deinit(UsbUartBridge* usb_uart, uint8_t uart_ch) {
+    UNUSED(usb_uart);
     furi_hal_uart_set_irq_cb(uart_ch, NULL, NULL);
     if(uart_ch == FuriHalUartIdUSART1)
         furi_hal_console_enable();
@@ -143,7 +145,7 @@ static void usb_uart_set_baudrate(UsbUartBridge* usb_uart, uint32_t baudrate) {
 
 static void usb_uart_update_ctrl_lines(UsbUartBridge* usb_uart) {
     if(usb_uart->cfg.flow_pins != 0) {
-        furi_assert((usb_uart->cfg.flow_pins - 1) < (sizeof(flow_pins) / sizeof(flow_pins[0])));
+        furi_assert((size_t)(usb_uart->cfg.flow_pins - 1) < COUNT_OF(flow_pins));
         uint8_t state = furi_hal_cdc_get_ctrl_line_state(usb_uart->cfg.vcp_ch);
 
         furi_hal_gpio_write(flow_pins[usb_uart->cfg.flow_pins - 1][0], !(state & USB_CDC_BIT_RTS));
@@ -171,7 +173,7 @@ static int32_t usb_uart_worker(void* context) {
     usb_uart_serial_init(usb_uart, usb_uart->cfg.uart_ch);
     usb_uart_set_baudrate(usb_uart, usb_uart->cfg.baudrate);
     if(usb_uart->cfg.flow_pins != 0) {
-        furi_assert((usb_uart->cfg.flow_pins - 1) < (sizeof(flow_pins) / sizeof(flow_pins[0])));
+        furi_assert((size_t)(usb_uart->cfg.flow_pins - 1) < COUNT_OF(flow_pins));
         furi_hal_gpio_init_simple(
             flow_pins[usb_uart->cfg.flow_pins - 1][0], GpioModeOutputPushPull);
         furi_hal_gpio_init_simple(
@@ -238,9 +240,7 @@ static int32_t usb_uart_worker(void* context) {
                         flow_pins[usb_uart->cfg.flow_pins - 1][1], GpioModeAnalog);
                 }
                 if(usb_uart->cfg_new.flow_pins != 0) {
-                    furi_assert(
-                        (usb_uart->cfg_new.flow_pins - 1) <
-                        (sizeof(flow_pins) / sizeof(flow_pins[0])));
+                    furi_assert((size_t)(usb_uart->cfg_new.flow_pins - 1) < COUNT_OF(flow_pins));
                     furi_hal_gpio_init_simple(
                         flow_pins[usb_uart->cfg_new.flow_pins - 1][0], GpioModeOutputPushPull);
                     furi_hal_gpio_init_simple(
@@ -318,14 +318,18 @@ static void vcp_on_cdc_rx(void* context) {
 }
 
 static void vcp_state_callback(void* context, uint8_t state) {
+    UNUSED(context);
+    UNUSED(state);
 }
 
 static void vcp_on_cdc_control_line(void* context, uint8_t state) {
+    UNUSED(state);
     UsbUartBridge* usb_uart = (UsbUartBridge*)context;
     osThreadFlagsSet(furi_thread_get_thread_id(usb_uart->thread), WorkerEvtCtrlLineSet);
 }
 
 static void vcp_on_line_config(void* context, struct usb_cdc_line_coding* config) {
+    UNUSED(config);
     UsbUartBridge* usb_uart = (UsbUartBridge*)context;
     osThreadFlagsSet(furi_thread_get_thread_id(usb_uart->thread), WorkerEvtLineCfgSet);
 }
diff --git a/applications/gpio/views/gpio_test.c b/applications/gpio/views/gpio_test.c
index cf05dafa..37c2f408 100755
--- a/applications/gpio/views/gpio_test.c
+++ b/applications/gpio/views/gpio_test.c
@@ -123,6 +123,7 @@ void gpio_test_set_ok_callback(GpioTest* gpio_test, GpioTestOkCallback callback,
     furi_assert(callback);
     with_view_model(
         gpio_test->view, (GpioTestModel * model) {
+            UNUSED(model);
             gpio_test->callback = callback;
             gpio_test->context = context;
             return false;
diff --git a/applications/gpio/views/gpio_usb_uart.c b/applications/gpio/views/gpio_usb_uart.c
index cd507570..d2d371b6 100644
--- a/applications/gpio/views/gpio_usb_uart.c
+++ b/applications/gpio/views/gpio_usb_uart.c
@@ -130,6 +130,7 @@ void gpio_usb_uart_set_callback(GpioUsbUart* usb_uart, GpioUsbUartCallback callb
 
     with_view_model(
         usb_uart->view, (GpioUsbUartModel * model) {
+            UNUSED(model);
             usb_uart->callback = callback;
             usb_uart->context = context;
             return false;
diff --git a/applications/gui/gui.c b/applications/gui/gui.c
index 9ecfdebb..77ee4487 100644
--- a/applications/gui/gui.c
+++ b/applications/gui/gui.c
@@ -47,10 +47,9 @@ bool gui_redraw_fs(Gui* gui) {
 
 static void gui_redraw_status_bar(Gui* gui, bool need_attention) {
     ViewPortArray_it_t it;
-    uint8_t x;
-    uint8_t x_used = 0;
+    uint8_t left_used = 0;
+    uint8_t right_used = 0;
     uint8_t width;
-    ViewPort* view_port;
     canvas_set_orientation(gui->canvas, CanvasOrientationHorizontal);
     canvas_frame_set(
         gui->canvas, GUI_STATUS_BAR_X, GUI_STATUS_BAR_Y, GUI_DISPLAY_WIDTH, GUI_STATUS_BAR_HEIGHT);
@@ -69,100 +68,126 @@ static void gui_redraw_status_bar(Gui* gui, bool need_attention) {
     canvas_set_bitmap_mode(gui->canvas, 0);
 
     // Right side
-    x = GUI_DISPLAY_WIDTH;
+    uint8_t x = GUI_DISPLAY_WIDTH - 1;
     ViewPortArray_it(it, gui->layers[GuiLayerStatusBarRight]);
-    while(!ViewPortArray_end_p(it) && x_used < GUI_STATUS_BAR_WIDTH) {
-        // Render view_port;
-        view_port = *ViewPortArray_ref(it);
+    while(!ViewPortArray_end_p(it) && right_used < GUI_STATUS_BAR_WIDTH) {
+        ViewPort* view_port = *ViewPortArray_ref(it);
         if(view_port_is_enabled(view_port)) {
             width = view_port_get_width(view_port);
             if(!width) width = 8;
-            x_used += width;
+            // Recalculate next position
+            right_used += (width + 2);
             x -= (width + 2);
+            // Prepare work area background
             canvas_frame_set(
-                gui->canvas, x - 3, GUI_STATUS_BAR_Y, width + 5, GUI_STATUS_BAR_HEIGHT);
-
-            canvas_set_color(gui->canvas, ColorWhite);
-            canvas_draw_box(gui->canvas, 2, 1, width + 2, 10);
-            canvas_set_color(gui->canvas, ColorBlack);
-
-            canvas_draw_rframe(
-                gui->canvas, 0, 0, canvas_width(gui->canvas), canvas_height(gui->canvas), 1);
-            canvas_draw_line(gui->canvas, 1, 1, 1, canvas_height(gui->canvas) - 2);
-            canvas_draw_line(
                 gui->canvas,
-                2,
-                canvas_height(gui->canvas) - 2,
-                canvas_width(gui->canvas) - 2,
-                canvas_height(gui->canvas) - 2);
-
+                x - 1,
+                GUI_STATUS_BAR_Y + 1,
+                width + 2,
+                GUI_STATUS_BAR_WORKAREA_HEIGHT + 2);
+            canvas_set_color(gui->canvas, ColorWhite);
+            canvas_draw_box(
+                gui->canvas, 0, 0, canvas_width(gui->canvas), canvas_height(gui->canvas));
+            canvas_set_color(gui->canvas, ColorBlack);
+            // ViewPort draw
             canvas_frame_set(
-                gui->canvas, x, GUI_STATUS_BAR_Y + 1, width, GUI_STATUS_BAR_WORKAREA_HEIGHT);
-
+                gui->canvas, x, GUI_STATUS_BAR_Y + 2, width, GUI_STATUS_BAR_WORKAREA_HEIGHT);
             view_port_draw(view_port, gui->canvas);
         }
         ViewPortArray_next(it);
     }
+    // Draw frame around icons on the right
+    if(right_used) {
+        canvas_frame_set(
+            gui->canvas,
+            GUI_DISPLAY_WIDTH - 3 - right_used,
+            GUI_STATUS_BAR_Y,
+            right_used + 3,
+            GUI_STATUS_BAR_HEIGHT);
+        canvas_set_color(gui->canvas, ColorBlack);
+        canvas_draw_rframe(
+            gui->canvas, 0, 0, canvas_width(gui->canvas), canvas_height(gui->canvas), 1);
+        canvas_draw_line(
+            gui->canvas,
+            canvas_width(gui->canvas) - 2,
+            1,
+            canvas_width(gui->canvas) - 2,
+            canvas_height(gui->canvas) - 2);
+        canvas_draw_line(
+            gui->canvas,
+            1,
+            canvas_height(gui->canvas) - 2,
+            canvas_width(gui->canvas) - 2,
+            canvas_height(gui->canvas) - 2);
+    }
+
     // Left side
-    x = 0;
+    x = 2;
     ViewPortArray_it(it, gui->layers[GuiLayerStatusBarLeft]);
-    while(!ViewPortArray_end_p(it) && x_used < GUI_STATUS_BAR_WIDTH) {
-        // Render view_port;
-        view_port = *ViewPortArray_ref(it);
+    while(!ViewPortArray_end_p(it) && (right_used + left_used) < GUI_STATUS_BAR_WIDTH) {
+        ViewPort* view_port = *ViewPortArray_ref(it);
         if(view_port_is_enabled(view_port)) {
             width = view_port_get_width(view_port);
             if(!width) width = 8;
-            x_used += width;
-
+            // Prepare work area background
             canvas_frame_set(
-                gui->canvas, 0, GUI_STATUS_BAR_Y, x + width + 5, GUI_STATUS_BAR_HEIGHT);
-            canvas_draw_rframe(
-                gui->canvas, 0, 0, canvas_width(gui->canvas), canvas_height(gui->canvas), 1);
-            canvas_draw_line(gui->canvas, 1, 1, 1, canvas_height(gui->canvas) - 2);
-            canvas_draw_line(
                 gui->canvas,
-                2,
-                canvas_height(gui->canvas) - 2,
-                canvas_width(gui->canvas) - 2,
-                canvas_height(gui->canvas) - 2);
-
-            canvas_frame_set(gui->canvas, x, GUI_STATUS_BAR_Y, width + 5, GUI_STATUS_BAR_HEIGHT);
-
+                x - 1,
+                GUI_STATUS_BAR_Y + 1,
+                width + 2,
+                GUI_STATUS_BAR_WORKAREA_HEIGHT + 2);
             canvas_set_color(gui->canvas, ColorWhite);
-            canvas_draw_box(gui->canvas, 2, 1, width + 2, 10);
+            canvas_draw_box(
+                gui->canvas, 0, 0, canvas_width(gui->canvas), canvas_height(gui->canvas));
             canvas_set_color(gui->canvas, ColorBlack);
-
+            // ViewPort draw
             canvas_frame_set(
-                gui->canvas, x + 3, GUI_STATUS_BAR_Y + 2, width, GUI_STATUS_BAR_WORKAREA_HEIGHT);
+                gui->canvas, x, GUI_STATUS_BAR_Y + 2, width, GUI_STATUS_BAR_WORKAREA_HEIGHT);
             view_port_draw(view_port, gui->canvas);
-
+            // Recalculate next position
+            left_used += (width + 2);
             x += (width + 2);
         }
         ViewPortArray_next(it);
     }
-
+    // Extra notification
     if(need_attention) {
         width = icon_get_width(&I_Attention_5x8);
-        canvas_frame_set(gui->canvas, 0, GUI_STATUS_BAR_Y, x + width + 5, GUI_STATUS_BAR_HEIGHT);
+        // Prepare work area background
+        canvas_frame_set(
+            gui->canvas,
+            x - 1,
+            GUI_STATUS_BAR_Y + 1,
+            width + 2,
+            GUI_STATUS_BAR_WORKAREA_HEIGHT + 2);
+        canvas_set_color(gui->canvas, ColorWhite);
+        canvas_draw_box(gui->canvas, 0, 0, canvas_width(gui->canvas), canvas_height(gui->canvas));
+        canvas_set_color(gui->canvas, ColorBlack);
+        // Draw Icon
+        canvas_frame_set(
+            gui->canvas, x, GUI_STATUS_BAR_Y + 2, width, GUI_STATUS_BAR_WORKAREA_HEIGHT);
+        canvas_draw_icon(gui->canvas, 0, 0, &I_Attention_5x8);
+        // Recalculate next position
+        left_used += (width + 2);
+        x += (width + 2);
+    }
+    // Draw frame around icons on the left
+    if(left_used) {
+        canvas_frame_set(gui->canvas, 0, 0, left_used + 3, GUI_STATUS_BAR_HEIGHT);
         canvas_draw_rframe(
             gui->canvas, 0, 0, canvas_width(gui->canvas), canvas_height(gui->canvas), 1);
-        canvas_draw_line(gui->canvas, 1, 1, 1, canvas_height(gui->canvas) - 2);
         canvas_draw_line(
             gui->canvas,
-            2,
+            canvas_width(gui->canvas) - 2,
+            1,
+            canvas_width(gui->canvas) - 2,
+            canvas_height(gui->canvas) - 2);
+        canvas_draw_line(
+            gui->canvas,
+            1,
             canvas_height(gui->canvas) - 2,
             canvas_width(gui->canvas) - 2,
             canvas_height(gui->canvas) - 2);
-
-        canvas_frame_set(gui->canvas, x, GUI_STATUS_BAR_Y, width + 5, GUI_STATUS_BAR_HEIGHT);
-
-        canvas_set_color(gui->canvas, ColorWhite);
-        canvas_draw_box(gui->canvas, 2, 1, width + 2, 10);
-        canvas_set_color(gui->canvas, ColorBlack);
-
-        canvas_frame_set(
-            gui->canvas, x + 3, GUI_STATUS_BAR_Y + 2, width, GUI_STATUS_BAR_WORKAREA_HEIGHT);
-        canvas_draw_icon(gui->canvas, 0, 0, &I_Attention_5x8);
     }
 }
 
@@ -469,6 +494,7 @@ Gui* gui_alloc() {
 }
 
 int32_t gui_srv(void* p) {
+    UNUSED(p);
     Gui* gui = gui_alloc();
 
     furi_record_create("gui", gui);
diff --git a/applications/gui/icon.c b/applications/gui/icon.c
index bbc77516..98f35b12 100644
--- a/applications/gui/icon.c
+++ b/applications/gui/icon.c
@@ -10,4 +10,4 @@ uint8_t icon_get_height(const Icon* instance) {
 
 const uint8_t* icon_get_data(const Icon* instance) {
     return instance->frames[0];
-}
\ No newline at end of file
+}
diff --git a/applications/gui/icon.h b/applications/gui/icon.h
index ebe40266..e33c4d34 100644
--- a/applications/gui/icon.h
+++ b/applications/gui/icon.h
@@ -39,4 +39,4 @@ const uint8_t* icon_get_data(const Icon* instance);
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/applications/gui/modules/button_menu.c b/applications/gui/modules/button_menu.c
index 8f38efc4..36fd6f3a 100644
--- a/applications/gui/modules/button_menu.c
+++ b/applications/gui/modules/button_menu.c
@@ -331,7 +331,7 @@ void button_menu_set_selected_item(ButtonMenu* button_menu, uint32_t index) {
             ButtonMenuItemArray_it_t it;
             for(ButtonMenuItemArray_it(it, model->items); !ButtonMenuItemArray_end_p(it);
                 ButtonMenuItemArray_next(it), ++item_position) {
-                if(ButtonMenuItemArray_cref(it)->index == index) {
+                if((uint32_t)ButtonMenuItemArray_cref(it)->index == index) {
                     model->position = item_position;
                     break;
                 }
diff --git a/applications/gui/modules/button_panel.c b/applications/gui/modules/button_panel.c
index c2328d20..e3ae59a3 100644
--- a/applications/gui/modules/button_panel.c
+++ b/applications/gui/modules/button_panel.c
@@ -215,8 +215,8 @@ static void button_panel_view_draw_callback(Canvas* canvas, void* _model) {
 static void button_panel_process_down(ButtonPanel* button_panel) {
     with_view_model(
         button_panel->view, (ButtonPanelModel * model) {
-            size_t new_selected_item_x = model->selected_item_x;
-            size_t new_selected_item_y = model->selected_item_y;
+            uint16_t new_selected_item_x = model->selected_item_x;
+            uint16_t new_selected_item_y = model->selected_item_y;
             size_t i;
 
             if(new_selected_item_y >= (model->reserve_y - 1)) return false;
@@ -291,8 +291,8 @@ static void button_panel_process_left(ButtonPanel* button_panel) {
 static void button_panel_process_right(ButtonPanel* button_panel) {
     with_view_model(
         button_panel->view, (ButtonPanelModel * model) {
-            size_t new_selected_item_x = model->selected_item_x;
-            size_t new_selected_item_y = model->selected_item_y;
+            uint16_t new_selected_item_x = model->selected_item_x;
+            uint16_t new_selected_item_y = model->selected_item_y;
             size_t i;
 
             if(new_selected_item_x >= (model->reserve_x - 1)) return false;
diff --git a/applications/gui/modules/byte_input.h b/applications/gui/modules/byte_input.h
index b2f94f3c..42c4b5d6 100644
--- a/applications/gui/modules/byte_input.h
+++ b/applications/gui/modules/byte_input.h
@@ -66,4 +66,4 @@ void byte_input_set_header_text(ByteInput* byte_input, const char* text);
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/applications/gui/modules/empty_screen.c b/applications/gui/modules/empty_screen.c
index 61b4af36..0a51bc71 100644
--- a/applications/gui/modules/empty_screen.c
+++ b/applications/gui/modules/empty_screen.c
@@ -6,10 +6,13 @@ struct EmptyScreen {
 };
 
 static void empty_screen_view_draw_callback(Canvas* canvas, void* _model) {
+    UNUSED(_model);
     canvas_clear(canvas);
 }
 
 static bool empty_screen_view_input_callback(InputEvent* event, void* context) {
+    UNUSED(event);
+    UNUSED(context);
     return false;
 }
 
diff --git a/applications/gui/modules/empty_screen.h b/applications/gui/modules/empty_screen.h
index 43d2fe04..23ebeb3a 100644
--- a/applications/gui/modules/empty_screen.h
+++ b/applications/gui/modules/empty_screen.h
@@ -38,4 +38,4 @@ View* empty_screen_get_view(EmptyScreen* empty_screen);
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/applications/gui/modules/file_select.h b/applications/gui/modules/file_select.h
index 7318c87c..ed3d5b60 100644
--- a/applications/gui/modules/file_select.h
+++ b/applications/gui/modules/file_select.h
@@ -28,4 +28,4 @@ void file_select_set_selected_file(FileSelect* file_select, const char* filename
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/applications/gui/modules/loading.c b/applications/gui/modules/loading.c
index 7f623e24..60dc8338 100644
--- a/applications/gui/modules/loading.c
+++ b/applications/gui/modules/loading.c
@@ -34,6 +34,7 @@ static void loading_draw_callback(Canvas* canvas, void* _model) {
 }
 
 static bool loading_input_callback(InputEvent* event, void* context) {
+    UNUSED(event);
     furi_assert(context);
     return true;
 }
diff --git a/applications/gui/modules/text_box.c b/applications/gui/modules/text_box.c
index a7d0d763..52307ec2 100755
--- a/applications/gui/modules/text_box.c
+++ b/applications/gui/modules/text_box.c
@@ -87,7 +87,7 @@ static void text_box_insert_endline(Canvas* canvas, TextBoxModel* model) {
         model->scroll_num = line_num - 4;
         model->scroll_pos = line_num - 5;
     } else {
-        model->scroll_num = MAX(line_num - 4, 0);
+        model->scroll_num = MAX(line_num - 4, 0u);
         model->scroll_pos = 0;
     }
 }
diff --git a/applications/gui/modules/text_input.c b/applications/gui/modules/text_input.c
index 058762ad..04cd2d7f 100644
--- a/applications/gui/modules/text_input.c
+++ b/applications/gui/modules/text_input.c
@@ -122,15 +122,15 @@ static const TextInputKey* get_row(uint8_t row_index) {
     return row;
 }
 
-static const char get_selected_char(TextInputModel* model) {
+static char get_selected_char(TextInputModel* model) {
     return get_row(model->selected_row)[model->selected_column].text;
 }
 
-static const bool char_is_lowercase(char letter) {
+static bool char_is_lowercase(char letter) {
     return (letter >= 0x61 && letter <= 0x7A);
 }
 
-static const char char_to_uppercase(const char letter) {
+static char char_to_uppercase(const char letter) {
     if(isalpha(letter)) {
         return (letter - 0x20);
     } else {
@@ -260,6 +260,7 @@ static void text_input_view_draw_callback(Canvas* canvas, void* _model) {
 }
 
 static void text_input_handle_up(TextInput* text_input, TextInputModel* model) {
+    UNUSED(text_input);
     if(model->selected_row > 0) {
         model->selected_row--;
         if(model->selected_column > get_row_size(model->selected_row) - 6) {
@@ -269,6 +270,7 @@ static void text_input_handle_up(TextInput* text_input, TextInputModel* model) {
 }
 
 static void text_input_handle_down(TextInput* text_input, TextInputModel* model) {
+    UNUSED(text_input);
     if(model->selected_row < keyboard_row_count - 1) {
         model->selected_row++;
         if(model->selected_column > get_row_size(model->selected_row) - 4) {
@@ -278,6 +280,7 @@ static void text_input_handle_down(TextInput* text_input, TextInputModel* model)
 }
 
 static void text_input_handle_left(TextInput* text_input, TextInputModel* model) {
+    UNUSED(text_input);
     if(model->selected_column > 0) {
         model->selected_column--;
     } else {
@@ -286,6 +289,7 @@ static void text_input_handle_left(TextInput* text_input, TextInputModel* model)
 }
 
 static void text_input_handle_right(TextInput* text_input, TextInputModel* model) {
+    UNUSED(text_input);
     if(model->selected_column < get_row_size(model->selected_row) - 1) {
         model->selected_column++;
     } else {
diff --git a/applications/gui/modules/validators.h b/applications/gui/modules/validators.h
index 3a834a8a..15dbe901 100644
--- a/applications/gui/modules/validators.h
+++ b/applications/gui/modules/validators.h
@@ -19,4 +19,4 @@ bool validator_is_file_callback(const char* text, string_t error, void* context)
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/applications/gui/modules/variable_item_list.c b/applications/gui/modules/variable_item_list.c
index ebbdd434..4e5e4664 100644
--- a/applications/gui/modules/variable_item_list.c
+++ b/applications/gui/modules/variable_item_list.c
@@ -364,6 +364,7 @@ void variable_item_list_set_enter_callback(
     furi_assert(callback);
     with_view_model(
         variable_item_list->view, (VariableItemListModel * model) {
+            UNUSED(model);
             variable_item_list->callback = callback;
             variable_item_list->context = context;
             return false;
diff --git a/applications/gui/view.c b/applications/gui/view.c
index e9642d9b..ec73882d 100644
--- a/applications/gui/view.c
+++ b/applications/gui/view.c
@@ -126,6 +126,7 @@ void view_commit_model(View* view, bool update) {
 }
 
 void view_icon_animation_callback(IconAnimation* instance, void* context) {
+    UNUSED(instance);
     furi_assert(context);
     View* view = context;
     if(view->update_callback) {
diff --git a/applications/ibutton/ibutton.c b/applications/ibutton/ibutton.c
new file mode 100644
index 00000000..a38f077f
--- /dev/null
+++ b/applications/ibutton/ibutton.c
@@ -0,0 +1,349 @@
+#include "ibutton.h"
+#include "ibutton_i.h"
+#include "ibutton/scenes/ibutton_scene.h"
+
+#include <toolbox/path.h>
+#include <flipper_format/flipper_format.h>
+
+static const NotificationSequence* ibutton_notification_sequences[] = {
+    &sequence_error,
+    &sequence_success,
+    &sequence_blink_cyan_10,
+    &sequence_blink_magenta_10,
+    &sequence_blink_yellow_10,
+    &sequence_set_red_255,
+    &sequence_reset_red,
+    &sequence_set_green_255,
+    &sequence_reset_green,
+};
+
+static void ibutton_make_app_folder(iButton* ibutton) {
+    if(!storage_simply_mkdir(ibutton->storage, IBUTTON_APP_FOLDER)) {
+        dialog_message_show_storage_error(ibutton->dialogs, "Cannot create\napp folder");
+    }
+}
+
+static bool ibutton_load_key_data(iButton* ibutton, string_t key_path) {
+    FlipperFormat* file = flipper_format_file_alloc(ibutton->storage);
+    bool result = false;
+    string_t data;
+    string_init(data);
+
+    do {
+        if(!flipper_format_file_open_existing(file, string_get_cstr(key_path))) break;
+
+        // header
+        uint32_t version;
+        if(!flipper_format_read_header(file, data, &version)) break;
+        if(string_cmp_str(data, IBUTTON_APP_FILE_TYPE) != 0) break;
+        if(version != 1) break;
+
+        // key type
+        iButtonKeyType type;
+        if(!flipper_format_read_string(file, "Key type", data)) break;
+        if(!ibutton_key_get_type_by_string(string_get_cstr(data), &type)) break;
+
+        // key data
+        uint8_t key_data[IBUTTON_KEY_DATA_SIZE] = {0};
+        if(!flipper_format_read_hex(file, "Data", key_data, ibutton_key_get_size_by_type(type)))
+            break;
+
+        ibutton_key_set_type(ibutton->key, type);
+        ibutton_key_set_data(ibutton->key, key_data, IBUTTON_KEY_DATA_SIZE);
+
+        result = true;
+    } while(false);
+
+    flipper_format_free(file);
+    string_clear(data);
+
+    if(!result) {
+        dialog_message_show_storage_error(ibutton->dialogs, "Cannot load\nkey file");
+    }
+
+    return result;
+}
+
+bool ibutton_custom_event_callback(void* context, uint32_t event) {
+    furi_assert(context);
+    iButton* ibutton = context;
+    return scene_manager_handle_custom_event(ibutton->scene_manager, event);
+}
+
+bool ibutton_back_event_callback(void* context) {
+    furi_assert(context);
+    iButton* ibutton = context;
+    return scene_manager_handle_back_event(ibutton->scene_manager);
+}
+
+void ibutton_tick_event_callback(void* context) {
+    furi_assert(context);
+    iButton* ibutton = context;
+    scene_manager_handle_tick_event(ibutton->scene_manager);
+}
+
+iButton* ibutton_alloc() {
+    iButton* ibutton = malloc(sizeof(iButton));
+
+    ibutton->scene_manager = scene_manager_alloc(&ibutton_scene_handlers, ibutton);
+
+    ibutton->view_dispatcher = view_dispatcher_alloc();
+    view_dispatcher_enable_queue(ibutton->view_dispatcher);
+    view_dispatcher_set_event_callback_context(ibutton->view_dispatcher, ibutton);
+    view_dispatcher_set_custom_event_callback(
+        ibutton->view_dispatcher, ibutton_custom_event_callback);
+    view_dispatcher_set_navigation_event_callback(
+        ibutton->view_dispatcher, ibutton_back_event_callback);
+    view_dispatcher_set_tick_event_callback(
+        ibutton->view_dispatcher, ibutton_tick_event_callback, 100);
+
+    ibutton->gui = furi_record_open("gui");
+    view_dispatcher_attach_to_gui(
+        ibutton->view_dispatcher, ibutton->gui, ViewDispatcherTypeFullscreen);
+
+    ibutton->storage = furi_record_open("storage");
+    ibutton->dialogs = furi_record_open("dialogs");
+    ibutton->notifications = furi_record_open("notification");
+
+    ibutton->key = ibutton_key_alloc();
+    ibutton->key_worker = ibutton_worker_alloc();
+    ibutton_worker_start_thread(ibutton->key_worker);
+
+    ibutton->submenu = submenu_alloc();
+    view_dispatcher_add_view(
+        ibutton->view_dispatcher, iButtonViewSubmenu, submenu_get_view(ibutton->submenu));
+
+    ibutton->byte_input = byte_input_alloc();
+    view_dispatcher_add_view(
+        ibutton->view_dispatcher, iButtonViewByteInput, byte_input_get_view(ibutton->byte_input));
+
+    ibutton->text_input = text_input_alloc();
+    view_dispatcher_add_view(
+        ibutton->view_dispatcher, iButtonViewTextInput, text_input_get_view(ibutton->text_input));
+
+    ibutton->popup = popup_alloc();
+    view_dispatcher_add_view(
+        ibutton->view_dispatcher, iButtonViewPopup, popup_get_view(ibutton->popup));
+
+    ibutton->widget = widget_alloc();
+    view_dispatcher_add_view(
+        ibutton->view_dispatcher, iButtonViewWidget, widget_get_view(ibutton->widget));
+
+    ibutton->dialog_ex = dialog_ex_alloc();
+    view_dispatcher_add_view(
+        ibutton->view_dispatcher, iButtonViewDialogEx, dialog_ex_get_view(ibutton->dialog_ex));
+
+    return ibutton;
+}
+
+void ibutton_free(iButton* ibutton) {
+    furi_assert(ibutton);
+
+    view_dispatcher_remove_view(ibutton->view_dispatcher, iButtonViewDialogEx);
+    dialog_ex_free(ibutton->dialog_ex);
+
+    view_dispatcher_remove_view(ibutton->view_dispatcher, iButtonViewWidget);
+    widget_free(ibutton->widget);
+
+    view_dispatcher_remove_view(ibutton->view_dispatcher, iButtonViewPopup);
+    popup_free(ibutton->popup);
+
+    view_dispatcher_remove_view(ibutton->view_dispatcher, iButtonViewTextInput);
+    text_input_free(ibutton->text_input);
+
+    view_dispatcher_remove_view(ibutton->view_dispatcher, iButtonViewByteInput);
+    byte_input_free(ibutton->byte_input);
+
+    view_dispatcher_remove_view(ibutton->view_dispatcher, iButtonViewSubmenu);
+    submenu_free(ibutton->submenu);
+
+    view_dispatcher_free(ibutton->view_dispatcher);
+    scene_manager_free(ibutton->scene_manager);
+
+    furi_record_close("storage");
+    ibutton->storage = NULL;
+
+    furi_record_close("notification");
+    ibutton->notifications = NULL;
+
+    furi_record_close("dialogs");
+    ibutton->dialogs = NULL;
+
+    furi_record_close("gui");
+    ibutton->gui = NULL;
+
+    ibutton_worker_stop_thread(ibutton->key_worker);
+    ibutton_worker_free(ibutton->key_worker);
+    ibutton_key_free(ibutton->key);
+
+    free(ibutton);
+}
+
+bool ibutton_file_select(iButton* ibutton) {
+    bool success = dialog_file_select_show(
+        ibutton->dialogs,
+        IBUTTON_APP_FOLDER,
+        IBUTTON_APP_EXTENSION,
+        ibutton->file_name,
+        IBUTTON_FILE_NAME_SIZE,
+        ibutton_key_get_name_p(ibutton->key));
+
+    if(success) {
+        string_t key_str;
+        string_init_printf(
+            key_str, "%s/%s%s", IBUTTON_APP_FOLDER, ibutton->file_name, IBUTTON_APP_EXTENSION);
+        success = ibutton_load_key_data(ibutton, key_str);
+
+        if(success) {
+            ibutton_key_set_name(ibutton->key, ibutton->file_name);
+        }
+
+        string_clear(key_str);
+    }
+
+    return success;
+}
+
+bool ibutton_load_key(iButton* ibutton, const char* key_name) {
+    string_t key_path;
+    string_init_set_str(key_path, key_name);
+
+    const bool success = ibutton_load_key_data(ibutton, key_path);
+
+    if(success) {
+        path_extract_filename_no_ext(key_name, key_path);
+        ibutton_key_set_name(ibutton->key, string_get_cstr(key_path));
+    }
+
+    string_clear(key_path);
+    return success;
+}
+
+bool ibutton_save_key(iButton* ibutton, const char* key_name) {
+    // Create ibutton directory if necessary
+    ibutton_make_app_folder(ibutton);
+
+    FlipperFormat* file = flipper_format_file_alloc(ibutton->storage);
+    iButtonKey* key = ibutton->key;
+
+    string_t key_file_name;
+    bool result = false;
+    string_init(key_file_name);
+
+    do {
+        // First remove key if it was saved (we rename the key)
+        if(!ibutton_delete_key(ibutton)) break;
+
+        // Save the key
+        ibutton_key_set_name(key, key_name);
+
+        // Set full file name, for new key
+        string_printf(
+            key_file_name,
+            "%s/%s%s",
+            IBUTTON_APP_FOLDER,
+            ibutton_key_get_name_p(key),
+            IBUTTON_APP_EXTENSION);
+
+        // Open file for write
+        if(!flipper_format_file_open_always(file, string_get_cstr(key_file_name))) break;
+
+        // Write header
+        if(!flipper_format_write_header_cstr(file, IBUTTON_APP_FILE_TYPE, 1)) break;
+
+        // Write key type
+        if(!flipper_format_write_comment_cstr(file, "Key type can be Cyfral, Dallas or Metakom"))
+            break;
+        const char* key_type = ibutton_key_get_string_by_type(ibutton_key_get_type(key));
+        if(!flipper_format_write_string_cstr(file, "Key type", key_type)) break;
+
+        // Write data
+        if(!flipper_format_write_comment_cstr(
+               file, "Data size for Cyfral is 2, for Metakom is 4, for Dallas is 8"))
+            break;
+
+        if(!flipper_format_write_hex(
+               file, "Data", ibutton_key_get_data_p(key), ibutton_key_get_data_size(key)))
+            break;
+        result = true;
+
+    } while(false);
+
+    flipper_format_free(file);
+
+    string_clear(key_file_name);
+
+    if(!result) {
+        dialog_message_show_storage_error(ibutton->dialogs, "Cannot save\nkey file");
+    }
+
+    return result;
+}
+
+bool ibutton_delete_key(iButton* ibutton) {
+    string_t file_name;
+    bool result = false;
+
+    string_init_printf(
+        file_name,
+        "%s/%s%s",
+        IBUTTON_APP_FOLDER,
+        ibutton_key_get_name_p(ibutton->key),
+        IBUTTON_APP_EXTENSION);
+    result = storage_simply_remove(ibutton->storage, string_get_cstr(file_name));
+    string_clear(file_name);
+
+    return result;
+}
+
+void ibutton_text_store_set(iButton* ibutton, const char* text, ...) {
+    va_list args;
+    va_start(args, text);
+
+    vsnprintf(ibutton->text_store, IBUTTON_TEXT_STORE_SIZE, text, args);
+
+    va_end(args);
+}
+
+void ibutton_text_store_clear(iButton* ibutton) {
+    memset(ibutton->text_store, 0, IBUTTON_TEXT_STORE_SIZE);
+}
+
+void ibutton_switch_to_previous_scene_one_of(
+    iButton* ibutton,
+    const uint32_t* scene_ids,
+    size_t scene_ids_size) {
+    furi_assert(scene_ids_size);
+    SceneManager* scene_manager = ibutton->scene_manager;
+
+    for(size_t i = 0; i < scene_ids_size; ++i) {
+        const uint32_t scene_id = scene_ids[i];
+        if(scene_manager_has_previous_scene(scene_manager, scene_id)) {
+            scene_manager_search_and_switch_to_previous_scene(scene_manager, scene_id);
+            return;
+        }
+    }
+}
+
+void ibutton_notification_message(iButton* ibutton, uint32_t message) {
+    furi_assert(message < sizeof(ibutton_notification_sequences) / sizeof(NotificationSequence*));
+    notification_message(ibutton->notifications, ibutton_notification_sequences[message]);
+}
+
+int32_t ibutton_app(void* p) {
+    iButton* ibutton = ibutton_alloc();
+
+    ibutton_make_app_folder(ibutton);
+
+    if(p && ibutton_load_key(ibutton, (const char*)p)) {
+        // TODO: Display an error if the key from p could not be loaded
+        scene_manager_next_scene(ibutton->scene_manager, iButtonSceneEmulate);
+    } else {
+        scene_manager_next_scene(ibutton->scene_manager, iButtonSceneStart);
+    }
+
+    view_dispatcher_run(ibutton->view_dispatcher);
+
+    ibutton_free(ibutton);
+    return 0;
+}
diff --git a/applications/ibutton/ibutton.cpp b/applications/ibutton/ibutton.cpp
deleted file mode 100644
index 35dc2ce6..00000000
--- a/applications/ibutton/ibutton.cpp
+++ /dev/null
@@ -1,10 +0,0 @@
-#include "ibutton_app.h"
-
-// app enter function
-extern "C" int32_t ibutton_app(void* p) {
-    iButtonApp* app = new iButtonApp();
-    app->run(p);
-    delete app;
-
-    return 255;
-}
\ No newline at end of file
diff --git a/applications/ibutton/ibutton.h b/applications/ibutton/ibutton.h
new file mode 100644
index 00000000..56d6e3b6
--- /dev/null
+++ b/applications/ibutton/ibutton.h
@@ -0,0 +1,3 @@
+#pragma once
+
+typedef struct iButton iButton;
diff --git a/applications/ibutton/ibutton_app.cpp b/applications/ibutton/ibutton_app.cpp
deleted file mode 100644
index 43eb3692..00000000
--- a/applications/ibutton/ibutton_app.cpp
+++ /dev/null
@@ -1,342 +0,0 @@
-#include "ibutton_app.h"
-#include <stdarg.h>
-#include <furi_hal.h>
-#include <m-string.h>
-#include <toolbox/path.h>
-#include <flipper_format/flipper_format.h>
-
-const char* iButtonApp::app_folder = "/any/ibutton";
-const char* iButtonApp::app_extension = ".ibtn";
-const char* iButtonApp::app_filetype = "Flipper iButton key";
-
-void iButtonApp::run(void* args) {
-    iButtonEvent event;
-    bool consumed;
-    bool exit = false;
-
-    make_app_folder();
-
-    if(args && load_key((const char*)args)) {
-        current_scene = Scene::SceneEmulate;
-    }
-
-    scenes[current_scene]->on_enter(this);
-
-    while(!exit) {
-        view.receive_event(&event);
-
-        consumed = scenes[current_scene]->on_event(this, &event);
-
-        if(!consumed) {
-            if(event.type == iButtonEvent::Type::EventTypeBack) {
-                exit = switch_to_previous_scene();
-            }
-        }
-    };
-
-    scenes[current_scene]->on_exit(this);
-}
-
-iButtonApp::iButtonApp()
-    : notification{"notification"}
-    , storage{"storage"}
-    , dialogs{"dialogs"} {
-    key = ibutton_key_alloc();
-    key_worker = ibutton_worker_alloc();
-    ibutton_worker_start_thread(key_worker);
-}
-
-iButtonApp::~iButtonApp() {
-    for(std::map<Scene, iButtonScene*>::iterator it = scenes.begin(); it != scenes.end(); ++it) {
-        delete it->second;
-    }
-    scenes.clear();
-
-    ibutton_worker_stop_thread(key_worker);
-    ibutton_worker_free(key_worker);
-    ibutton_key_free(key);
-}
-
-iButtonAppViewManager* iButtonApp::get_view_manager() {
-    return &view;
-}
-
-void iButtonApp::switch_to_next_scene(Scene next_scene) {
-    previous_scenes_list.push_front(current_scene);
-
-    if(next_scene != Scene::SceneExit) {
-        scenes[current_scene]->on_exit(this);
-        current_scene = next_scene;
-        scenes[current_scene]->on_enter(this);
-    }
-}
-
-void iButtonApp::search_and_switch_to_previous_scene(std::initializer_list<Scene> scenes_list) {
-    Scene previous_scene = Scene::SceneStart;
-    bool scene_found = false;
-
-    while(!scene_found) {
-        previous_scene = get_previous_scene();
-        for(Scene element : scenes_list) {
-            if(previous_scene == element || previous_scene == Scene::SceneStart) {
-                scene_found = true;
-                break;
-            }
-        }
-    }
-
-    scenes[current_scene]->on_exit(this);
-    current_scene = previous_scene;
-    scenes[current_scene]->on_enter(this);
-}
-
-bool iButtonApp::switch_to_previous_scene(uint8_t count) {
-    Scene previous_scene = Scene::SceneStart;
-
-    for(uint8_t i = 0; i < count; i++) {
-        previous_scene = get_previous_scene();
-        if(previous_scene == Scene::SceneExit) break;
-    }
-
-    if(previous_scene == Scene::SceneExit) {
-        return true;
-    } else {
-        scenes[current_scene]->on_exit(this);
-        current_scene = previous_scene;
-        scenes[current_scene]->on_enter(this);
-        return false;
-    }
-}
-
-iButtonApp::Scene iButtonApp::get_previous_scene() {
-    Scene scene = previous_scenes_list.front();
-    previous_scenes_list.pop_front();
-    return scene;
-}
-
-iButtonWorker* iButtonApp::get_key_worker() {
-    return key_worker;
-}
-
-iButtonKey* iButtonApp::get_key() {
-    return key;
-}
-
-char* iButtonApp::get_file_name() {
-    return file_name;
-}
-
-uint8_t iButtonApp::get_file_name_size() {
-    return file_name_size;
-}
-
-void iButtonApp::notify_read() {
-    notification_message(notification, &sequence_blink_cyan_10);
-}
-
-void iButtonApp::notify_emulate() {
-    notification_message(notification, &sequence_blink_magenta_10);
-}
-
-void iButtonApp::notify_yellow_blink() {
-    notification_message(notification, &sequence_blink_yellow_10);
-}
-
-void iButtonApp::notify_error() {
-    notification_message(notification, &sequence_error);
-}
-
-void iButtonApp::notify_success() {
-    notification_message(notification, &sequence_success);
-}
-
-void iButtonApp::notify_green_on() {
-    notification_message_block(notification, &sequence_set_green_255);
-}
-
-void iButtonApp::notify_green_off() {
-    notification_message(notification, &sequence_reset_green);
-}
-
-void iButtonApp::notify_red_on() {
-    notification_message_block(notification, &sequence_set_red_255);
-}
-
-void iButtonApp::notify_red_off() {
-    notification_message(notification, &sequence_reset_red);
-}
-
-void iButtonApp::set_text_store(const char* text...) {
-    va_list args;
-    va_start(args, text);
-
-    vsnprintf(text_store, text_store_size, text, args);
-
-    va_end(args);
-}
-
-char* iButtonApp::get_text_store() {
-    return text_store;
-}
-
-uint8_t iButtonApp::get_text_store_size() {
-    return text_store_size;
-}
-
-// file managment
-bool iButtonApp::save_key(const char* key_name) {
-    // Create ibutton directory if necessary
-    make_app_folder();
-
-    FlipperFormat* file = flipper_format_file_alloc(storage);
-    string_t key_file_name;
-    bool result = false;
-    string_init(key_file_name);
-
-    do {
-        // First remove key if it was saved (we rename the key)
-        if(!delete_key()) break;
-
-        // Save the key
-        ibutton_key_set_name(key, key_name);
-
-        // Set full file name, for new key
-        string_printf(
-            key_file_name, "%s/%s%s", app_folder, ibutton_key_get_name_p(key), app_extension);
-
-        // Open file for write
-        if(!flipper_format_file_open_always(file, string_get_cstr(key_file_name))) break;
-
-        // Write header
-        if(!flipper_format_write_header_cstr(file, iButtonApp::app_filetype, 1)) break;
-
-        // Write key type
-        if(!flipper_format_write_comment_cstr(file, "Key type can be Cyfral, Dallas or Metakom"))
-            break;
-        const char* key_type = ibutton_key_get_string_by_type(ibutton_key_get_type(key));
-        if(!flipper_format_write_string_cstr(file, "Key type", key_type)) break;
-
-        // Write data
-        if(!flipper_format_write_comment_cstr(
-               file, "Data size for Cyfral is 2, for Metakom is 4, for Dallas is 8"))
-            break;
-
-        if(!flipper_format_write_hex(
-               file, "Data", ibutton_key_get_data_p(key), ibutton_key_get_data_size(key)))
-            break;
-        result = true;
-
-    } while(false);
-
-    flipper_format_free(file);
-
-    string_clear(key_file_name);
-
-    if(!result) {
-        dialog_message_show_storage_error(dialogs, "Cannot save\nkey file");
-    }
-
-    return result;
-}
-
-bool iButtonApp::load_key_data(string_t key_path) {
-    FlipperFormat* file = flipper_format_file_alloc(storage);
-    bool result = false;
-    string_t data;
-    string_init(data);
-
-    do {
-        if(!flipper_format_file_open_existing(file, string_get_cstr(key_path))) break;
-
-        // header
-        uint32_t version;
-        if(!flipper_format_read_header(file, data, &version)) break;
-        if(string_cmp_str(data, iButtonApp::app_filetype) != 0) break;
-        if(version != 1) break;
-
-        // key type
-        iButtonKeyType type;
-        if(!flipper_format_read_string(file, "Key type", data)) break;
-        if(!ibutton_key_get_type_by_string(string_get_cstr(data), &type)) break;
-
-        // key data
-        uint8_t key_data[IBUTTON_KEY_DATA_SIZE] = {0};
-        if(!flipper_format_read_hex(file, "Data", key_data, ibutton_key_get_size_by_type(type)))
-            break;
-
-        ibutton_key_set_type(key, type);
-        ibutton_key_set_data(key, key_data, IBUTTON_KEY_DATA_SIZE);
-
-        result = true;
-    } while(false);
-
-    flipper_format_free(file);
-    string_clear(data);
-
-    if(!result) {
-        dialog_message_show_storage_error(dialogs, "Cannot load\nkey file");
-    }
-
-    return result;
-}
-
-bool iButtonApp::load_key(const char* key_name) {
-    bool result = false;
-    string_t key_path;
-
-    string_init_set_str(key_path, key_name);
-
-    result = load_key_data(key_path);
-    if(result) {
-        path_extract_filename_no_ext(key_name, key_path);
-        ibutton_key_set_name(key, string_get_cstr(key_path));
-    }
-    string_clear(key_path);
-    return result;
-}
-
-bool iButtonApp::load_key() {
-    bool result = false;
-
-    // Input events and views are managed by file_select
-    bool res = dialog_file_select_show(
-        dialogs,
-        app_folder,
-        app_extension,
-        get_file_name(),
-        get_file_name_size(),
-        ibutton_key_get_name_p(key));
-
-    if(res) {
-        string_t key_str;
-
-        // Get key file path
-        string_init_printf(key_str, "%s/%s%s", app_folder, get_file_name(), app_extension);
-
-        result = load_key_data(key_str);
-        if(result) {
-            ibutton_key_set_name(key, get_file_name());
-        }
-        string_clear(key_str);
-    }
-
-    return result;
-}
-
-bool iButtonApp::delete_key() {
-    string_t file_name;
-    bool result = false;
-
-    string_init_printf(
-        file_name, "%s/%s%s", app_folder, ibutton_key_get_name_p(key), app_extension);
-    result = storage_simply_remove(storage, string_get_cstr(file_name));
-    string_clear(file_name);
-
-    return result;
-}
-
-void iButtonApp::make_app_folder() {
-    if(!storage_simply_mkdir(storage, app_folder)) {
-        dialog_message_show_storage_error(dialogs, "Cannot create\napp folder");
-    }
-}
diff --git a/applications/ibutton/ibutton_app.h b/applications/ibutton/ibutton_app.h
deleted file mode 100644
index d3d8cac6..00000000
--- a/applications/ibutton/ibutton_app.h
+++ /dev/null
@@ -1,144 +0,0 @@
-#pragma once
-#include <map>
-#include <list>
-
-#include "ibutton_view_manager.h"
-#include "scene/ibutton_scene_generic.h"
-#include "scene/ibutton_scene_start.h"
-#include "scene/ibutton_scene_read.h"
-#include "scene/ibutton_scene_read_crc_error.h"
-#include "scene/ibutton_scene_read_not_key_error.h"
-#include "scene/ibutton_scene_read_success.h"
-#include "scene/ibutton_scene_retry_confirm.h"
-#include "scene/ibutton_scene_exit_confirm.h"
-#include "scene/ibutton_scene_read_key_menu.h"
-#include "scene/ibutton_scene_write.h"
-#include "scene/ibutton_scene_write_success.h"
-#include "scene/ibutton_scene_saved_key_menu.h"
-#include "scene/ibutton_scene_delete_confirm.h"
-#include "scene/ibutton_scene_delete_success.h"
-#include "scene/ibutton_scene_emulate.h"
-#include "scene/ibutton_scene_save_name.h"
-#include "scene/ibutton_scene_save_success.h"
-#include "scene/ibutton_scene_info.h"
-#include "scene/ibutton_scene_select_key.h"
-#include "scene/ibutton_scene_add_type.h"
-#include "scene/ibutton_scene_add_value.h"
-#include <one_wire/ibutton/ibutton_worker.h>
-#include <notification/notification_messages.h>
-#include <storage/storage.h>
-#include <dialogs/dialogs.h>
-#include <record_controller.hpp>
-
-class iButtonApp {
-public:
-    void run(void* args);
-
-    iButtonApp();
-    ~iButtonApp();
-
-    enum class Scene : uint8_t {
-        SceneExit,
-        SceneStart,
-        SceneRead,
-        SceneReadNotKeyError,
-        SceneReadCRCError,
-        SceneReadSuccess,
-        SceneRetryConfirm,
-        SceneExitConfirm,
-        SceneReadKeyMenu,
-        SceneWrite,
-        SceneWriteSuccess,
-        SceneEmulate,
-        SceneSavedKeyMenu,
-        SceneDeleteConfirm,
-        SceneDeleteSuccess,
-        SceneSaveName,
-        SceneSaveSuccess,
-        SceneInfo,
-        SceneSelectKey,
-        SceneAddType,
-        SceneAddValue,
-    };
-
-    static const char* app_folder;
-    static const char* app_extension;
-    static const char* app_filetype;
-
-    iButtonAppViewManager* get_view_manager();
-    void switch_to_next_scene(Scene index);
-    void search_and_switch_to_previous_scene(std::initializer_list<Scene> scenes_list);
-    bool switch_to_previous_scene(uint8_t count = 1);
-    Scene get_previous_scene();
-
-    const GpioPin* get_ibutton_pin();
-    iButtonWorker* get_key_worker();
-    iButtonKey* get_key();
-
-    void notify_read();
-    void notify_yellow_blink();
-    void notify_emulate();
-
-    void notify_error();
-    void notify_success();
-    void notify_green_on();
-    void notify_green_off();
-    void notify_red_on();
-    void notify_red_off();
-
-    void set_text_store(const char* text...);
-    char* get_text_store();
-    uint8_t get_text_store_size();
-
-    char* get_file_name();
-    uint8_t get_file_name_size();
-
-    bool save_key(const char* key_name);
-    bool load_key();
-    bool load_key(const char* key_name);
-    bool delete_key();
-
-private:
-    std::list<Scene> previous_scenes_list = {Scene::SceneExit};
-    Scene current_scene = Scene::SceneStart;
-    iButtonAppViewManager view;
-
-    std::map<Scene, iButtonScene*> scenes = {
-        {Scene::SceneStart, new iButtonSceneStart()},
-        {Scene::SceneRead, new iButtonSceneRead()},
-        {Scene::SceneReadCRCError, new iButtonSceneReadCRCError()},
-        {Scene::SceneReadNotKeyError, new iButtonSceneReadNotKeyError()},
-        {Scene::SceneReadSuccess, new iButtonSceneReadSuccess()},
-        {Scene::SceneRetryConfirm, new iButtonSceneRetryConfirm()},
-        {Scene::SceneExitConfirm, new iButtonSceneExitConfirm()},
-        {Scene::SceneReadKeyMenu, new iButtonSceneReadKeyMenu()},
-        {Scene::SceneWrite, new iButtonSceneWrite()},
-        {Scene::SceneWriteSuccess, new iButtonSceneWriteSuccess()},
-        {Scene::SceneEmulate, new iButtonSceneEmulate()},
-        {Scene::SceneSavedKeyMenu, new iButtonSceneSavedKeyMenu()},
-        {Scene::SceneDeleteConfirm, new iButtonSceneDeleteConfirm()},
-        {Scene::SceneDeleteSuccess, new iButtonSceneDeleteSuccess()},
-        {Scene::SceneSaveName, new iButtonSceneSaveName()},
-        {Scene::SceneSaveSuccess, new iButtonSceneSaveSuccess()},
-        {Scene::SceneInfo, new iButtonSceneInfo()},
-        {Scene::SceneSelectKey, new iButtonSceneSelectKey()},
-        {Scene::SceneAddType, new iButtonSceneAddType()},
-        {Scene::SceneAddValue, new iButtonSceneAddValue()},
-    };
-
-    iButtonWorker* key_worker;
-    iButtonKey* key;
-
-    RecordController<NotificationApp> notification;
-    RecordController<Storage> storage;
-    RecordController<DialogsApp> dialogs;
-
-    static const uint8_t file_name_size = 100;
-    char file_name[file_name_size];
-
-    static const uint8_t text_store_size = 128;
-    char text_store[text_store_size + 1];
-
-    bool load_key_data(string_t key_path);
-    void make_app_folder();
-};
\ No newline at end of file
diff --git a/applications/ibutton/ibutton_cli.c b/applications/ibutton/ibutton_cli.c
index c50ec210..4592cdad 100644
--- a/applications/ibutton/ibutton_cli.c
+++ b/applications/ibutton/ibutton_cli.c
@@ -240,6 +240,7 @@ void ibutton_cli_emulate(Cli* cli, string_t args) {
 };
 
 static void ibutton_cli(Cli* cli, string_t args, void* context) {
+    UNUSED(context);
     string_t cmd;
     string_init(cmd);
 
@@ -268,6 +269,7 @@ void onewire_cli_print_usage() {
 };
 
 static void onewire_cli_search(Cli* cli) {
+    UNUSED(cli);
     OneWireHost* onewire = onewire_host_alloc();
     uint8_t address[8];
     bool done = false;
@@ -297,6 +299,7 @@ static void onewire_cli_search(Cli* cli) {
 }
 
 void onewire_cli(Cli* cli, string_t args, void* context) {
+    UNUSED(context);
     string_t cmd;
     string_init(cmd);
 
@@ -311,4 +314,4 @@ void onewire_cli(Cli* cli, string_t args, void* context) {
     }
 
     string_clear(cmd);
-}
\ No newline at end of file
+}
diff --git a/applications/ibutton/ibutton_custom_event.h b/applications/ibutton/ibutton_custom_event.h
new file mode 100644
index 00000000..2be42d66
--- /dev/null
+++ b/applications/ibutton/ibutton_custom_event.h
@@ -0,0 +1,12 @@
+#pragma once
+
+enum iButtonCustomEvent {
+    // Reserve first 100 events for button types and indexes, starting from 0
+    iButtonCustomEventReserved = 100,
+
+    iButtonCustomEventBack,
+    iButtonCustomEventTextEditResult,
+    iButtonCustomEventByteEditResult,
+    iButtonCustomEventWorkerEmulated,
+    iButtonCustomEventWorkerRead,
+};
diff --git a/applications/ibutton/ibutton_event.h b/applications/ibutton/ibutton_event.h
deleted file mode 100644
index b4dac2f4..00000000
--- a/applications/ibutton/ibutton_event.h
+++ /dev/null
@@ -1,35 +0,0 @@
-#pragma once
-#include <stdint.h>
-#include <gui/modules/dialog_ex.h>
-#include <gui/modules/widget.h>
-#include <one_wire/ibutton/ibutton_worker.h>
-
-class iButtonApp;
-
-class iButtonEvent {
-public:
-    // events enum
-    enum class Type : uint8_t {
-        EventTypeTick,
-        EventTypeBack,
-        EventTypeMenuSelected,
-        EventTypeDialogResult,
-        EventTypeTextEditResult,
-        EventTypeByteEditResult,
-        EventTypeWidgetButtonResult,
-        EventTypeWorkerEmulated,
-        EventTypeWorkerRead,
-        EventTypeWorkerWrite,
-    };
-
-    // payload
-    union {
-        uint32_t menu_index;
-        DialogExResult dialog_result;
-        GuiButtonType widget_button_result;
-        iButtonWorkerWriteResult worker_write_result;
-    } payload;
-
-    // event type
-    Type type;
-};
diff --git a/applications/ibutton/ibutton_i.h b/applications/ibutton/ibutton_i.h
new file mode 100644
index 00000000..36857fd6
--- /dev/null
+++ b/applications/ibutton/ibutton_i.h
@@ -0,0 +1,86 @@
+#pragma once
+
+#include "ibutton.h"
+
+#include <gui/gui.h>
+#include <gui/view.h>
+#include <gui/view_dispatcher.h>
+#include <gui/scene_manager.h>
+#include <notification/notification_messages.h>
+
+#include <one_wire/ibutton/ibutton_worker.h>
+#include <storage/storage.h>
+#include <dialogs/dialogs.h>
+
+#include <gui/modules/submenu.h>
+#include <gui/modules/popup.h>
+#include <gui/modules/dialog_ex.h>
+#include <gui/modules/text_input.h>
+#include <gui/modules/byte_input.h>
+#include <gui/modules/widget.h>
+
+#include "ibutton_custom_event.h"
+#include "scenes/ibutton_scene.h"
+
+#define IBUTTON_FILE_NAME_SIZE 100
+#define IBUTTON_TEXT_STORE_SIZE 128
+
+#define IBUTTON_APP_FOLDER "/any/ibutton"
+#define IBUTTON_APP_EXTENSION ".ibtn"
+#define IBUTTON_APP_FILE_TYPE "Flipper iButton key"
+
+struct iButton {
+    SceneManager* scene_manager;
+    ViewDispatcher* view_dispatcher;
+
+    Gui* gui;
+    Storage* storage;
+    DialogsApp* dialogs;
+    NotificationApp* notifications;
+
+    iButtonWorker* key_worker;
+    iButtonKey* key;
+
+    char file_name[IBUTTON_FILE_NAME_SIZE];
+    char text_store[IBUTTON_TEXT_STORE_SIZE + 1];
+
+    Submenu* submenu;
+    ByteInput* byte_input;
+    TextInput* text_input;
+    Popup* popup;
+    Widget* widget;
+    DialogEx* dialog_ex;
+};
+
+typedef enum {
+    iButtonViewSubmenu,
+    iButtonViewByteInput,
+    iButtonViewTextInput,
+    iButtonViewPopup,
+    iButtonViewWidget,
+    iButtonViewDialogEx,
+} iButtonView;
+
+typedef enum {
+    iButtonNotificationMessageError,
+    iButtonNotificationMessageSuccess,
+    iButtonNotificationMessageRead,
+    iButtonNotificationMessageEmulate,
+    iButtonNotificationMessageYellowBlink,
+    iButtonNotificationMessageRedOn,
+    iButtonNotificationMessageRedOff,
+    iButtonNotificationMessageGreenOn,
+    iButtonNotificationMessageGreenOff,
+} iButtonNotificationMessage;
+
+bool ibutton_file_select(iButton* ibutton);
+bool ibutton_load_key(iButton* ibutton, const char* key_name);
+bool ibutton_save_key(iButton* ibutton, const char* key_name);
+bool ibutton_delete_key(iButton* ibutton);
+void ibutton_text_store_set(iButton* ibutton, const char* text, ...);
+void ibutton_text_store_clear(iButton* ibutton);
+void ibutton_switch_to_previous_scene_one_of(
+    iButton* ibutton,
+    const uint32_t* scene_ids,
+    size_t scene_ids_size);
+void ibutton_notification_message(iButton* ibutton, uint32_t message);
diff --git a/applications/ibutton/ibutton_view_manager.cpp b/applications/ibutton/ibutton_view_manager.cpp
deleted file mode 100755
index efaa6f81..00000000
--- a/applications/ibutton/ibutton_view_manager.cpp
+++ /dev/null
@@ -1,140 +0,0 @@
-#include "ibutton_view_manager.h"
-#include "ibutton_event.h"
-#include <callback-connector.h>
-
-iButtonAppViewManager::iButtonAppViewManager() {
-    event_queue = osMessageQueueNew(10, sizeof(iButtonEvent), NULL);
-
-    view_dispatcher = view_dispatcher_alloc();
-    auto callback = cbc::obtain_connector(this, &iButtonAppViewManager::previous_view_callback);
-
-    dialog_ex = dialog_ex_alloc();
-    view_dispatcher_add_view(
-        view_dispatcher,
-        static_cast<uint32_t>(iButtonAppViewManager::Type::iButtonAppViewDialogEx),
-        dialog_ex_get_view(dialog_ex));
-
-    submenu = submenu_alloc();
-    view_dispatcher_add_view(
-        view_dispatcher,
-        static_cast<uint32_t>(iButtonAppViewManager::Type::iButtonAppViewSubmenu),
-        submenu_get_view(submenu));
-
-    text_input = text_input_alloc();
-    view_dispatcher_add_view(
-        view_dispatcher,
-        static_cast<uint32_t>(iButtonAppViewManager::Type::iButtonAppViewTextInput),
-        text_input_get_view(text_input));
-
-    byte_input = byte_input_alloc();
-    view_dispatcher_add_view(
-        view_dispatcher,
-        static_cast<uint32_t>(iButtonAppViewManager::Type::iButtonAppViewByteInput),
-        byte_input_get_view(byte_input));
-
-    popup = popup_alloc();
-    view_dispatcher_add_view(
-        view_dispatcher,
-        static_cast<uint32_t>(iButtonAppViewManager::Type::iButtonAppViewPopup),
-        popup_get_view(popup));
-
-    widget = widget_alloc();
-    view_dispatcher_add_view(
-        view_dispatcher,
-        static_cast<uint32_t>(iButtonAppViewManager::Type::iButtonAppViewWidget),
-        widget_get_view(widget));
-
-    gui = static_cast<Gui*>(furi_record_open("gui"));
-    view_dispatcher_attach_to_gui(view_dispatcher, gui, ViewDispatcherTypeFullscreen);
-
-    //TODO think about that method, seems unsafe and over-engineered
-    view_set_previous_callback(dialog_ex_get_view(dialog_ex), callback);
-    view_set_previous_callback(submenu_get_view(submenu), callback);
-    view_set_previous_callback(text_input_get_view(text_input), callback);
-    view_set_previous_callback(byte_input_get_view(byte_input), callback);
-    view_set_previous_callback(popup_get_view(popup), callback);
-    view_set_previous_callback(widget_get_view(widget), callback);
-}
-
-iButtonAppViewManager::~iButtonAppViewManager() {
-    // remove views
-    view_dispatcher_remove_view(
-        view_dispatcher,
-        static_cast<uint32_t>(iButtonAppViewManager::Type::iButtonAppViewDialogEx));
-    view_dispatcher_remove_view(
-        view_dispatcher,
-        static_cast<uint32_t>(iButtonAppViewManager::Type::iButtonAppViewSubmenu));
-    view_dispatcher_remove_view(
-        view_dispatcher,
-        static_cast<uint32_t>(iButtonAppViewManager::Type::iButtonAppViewTextInput));
-    view_dispatcher_remove_view(
-        view_dispatcher, static_cast<uint32_t>(iButtonAppViewManager::Type::iButtonAppViewPopup));
-    view_dispatcher_remove_view(
-        view_dispatcher,
-        static_cast<uint32_t>(iButtonAppViewManager::Type::iButtonAppViewByteInput));
-    view_dispatcher_remove_view(
-        view_dispatcher, static_cast<uint32_t>(iButtonAppViewManager::Type::iButtonAppViewWidget));
-
-    // free view modules
-    popup_free(popup);
-    text_input_free(text_input);
-    byte_input_free(byte_input);
-    submenu_free(submenu);
-    dialog_ex_free(dialog_ex);
-    widget_free(widget);
-
-    // free dispatcher
-    view_dispatcher_free(view_dispatcher);
-
-    // free event queue
-    osMessageQueueDelete(event_queue);
-}
-
-void iButtonAppViewManager::switch_to(Type type) {
-    view_dispatcher_switch_to_view(view_dispatcher, static_cast<uint32_t>(type));
-}
-
-Submenu* iButtonAppViewManager::get_submenu() {
-    return submenu;
-}
-
-Popup* iButtonAppViewManager::get_popup() {
-    return popup;
-}
-
-DialogEx* iButtonAppViewManager::get_dialog_ex() {
-    return dialog_ex;
-}
-
-TextInput* iButtonAppViewManager::get_text_input() {
-    return text_input;
-}
-
-ByteInput* iButtonAppViewManager::get_byte_input() {
-    return byte_input;
-}
-
-Widget* iButtonAppViewManager::get_widget() {
-    return widget;
-}
-
-void iButtonAppViewManager::receive_event(iButtonEvent* event) {
-    if(osMessageQueueGet(event_queue, event, NULL, 100) != osOK) {
-        event->type = iButtonEvent::Type::EventTypeTick;
-    }
-}
-
-void iButtonAppViewManager::send_event(iButtonEvent* event) {
-    osStatus_t result = osMessageQueuePut(event_queue, event, 0, 0);
-    furi_check(result == osOK);
-}
-
-uint32_t iButtonAppViewManager::previous_view_callback(void* context) {
-    if(event_queue != NULL) {
-        iButtonEvent event;
-        event.type = iButtonEvent::Type::EventTypeBack;
-        send_event(&event);
-    }
-
-    return VIEW_IGNORE;
-}
\ No newline at end of file
diff --git a/applications/ibutton/ibutton_view_manager.h b/applications/ibutton/ibutton_view_manager.h
deleted file mode 100644
index 89d084ba..00000000
--- a/applications/ibutton/ibutton_view_manager.h
+++ /dev/null
@@ -1,51 +0,0 @@
-#pragma once
-#include <furi.h>
-#include <gui/view_dispatcher.h>
-#include <gui/modules/dialog_ex.h>
-#include <gui/modules/submenu.h>
-#include <gui/modules/text_input.h>
-#include <gui/modules/byte_input.h>
-#include <gui/modules/popup.h>
-#include <gui/modules/widget.h>
-#include "ibutton_event.h"
-
-class iButtonAppViewManager {
-public:
-    enum class Type : uint8_t {
-        iButtonAppViewTextInput,
-        iButtonAppViewByteInput,
-        iButtonAppViewSubmenu,
-        iButtonAppViewDialogEx,
-        iButtonAppViewPopup,
-        iButtonAppViewWidget,
-    };
-
-    osMessageQueueId_t event_queue;
-
-    iButtonAppViewManager();
-    ~iButtonAppViewManager();
-
-    void switch_to(Type type);
-
-    Submenu* get_submenu();
-    Popup* get_popup();
-    DialogEx* get_dialog_ex();
-    TextInput* get_text_input();
-    ByteInput* get_byte_input();
-    Widget* get_widget();
-
-    void receive_event(iButtonEvent* event);
-    void send_event(iButtonEvent* event);
-
-private:
-    ViewDispatcher* view_dispatcher;
-    DialogEx* dialog_ex;
-    Submenu* submenu;
-    TextInput* text_input;
-    ByteInput* byte_input;
-    Popup* popup;
-    Widget* widget;
-    Gui* gui;
-
-    uint32_t previous_view_callback(void* context);
-};
\ No newline at end of file
diff --git a/applications/ibutton/scene/ibutton_scene_add_type.cpp b/applications/ibutton/scene/ibutton_scene_add_type.cpp
deleted file mode 100644
index c9537768..00000000
--- a/applications/ibutton/scene/ibutton_scene_add_type.cpp
+++ /dev/null
@@ -1,66 +0,0 @@
-#include "ibutton_scene_add_type.h"
-#include "../ibutton_app.h"
-#include <callback-connector.h>
-
-typedef enum {
-    SubmenuIndexCyfral,
-    SubmenuIndexDallas,
-    SubmenuIndexMetakom,
-} SubmenuIndex;
-
-static void submenu_callback(void* context, uint32_t index) {
-    furi_assert(context);
-    iButtonApp* app = static_cast<iButtonApp*>(context);
-    iButtonEvent event;
-
-    event.type = iButtonEvent::Type::EventTypeMenuSelected;
-    event.payload.menu_index = index;
-
-    app->get_view_manager()->send_event(&event);
-}
-
-void iButtonSceneAddType::on_enter(iButtonApp* app) {
-    iButtonAppViewManager* view_manager = app->get_view_manager();
-    Submenu* submenu = view_manager->get_submenu();
-
-    submenu_add_item(submenu, "Cyfral", SubmenuIndexCyfral, submenu_callback, app);
-    submenu_add_item(submenu, "Dallas", SubmenuIndexDallas, submenu_callback, app);
-    submenu_add_item(submenu, "Metakom", SubmenuIndexMetakom, submenu_callback, app);
-    submenu_set_selected_item(submenu, submenu_item_selected);
-
-    view_manager->switch_to(iButtonAppViewManager::Type::iButtonAppViewSubmenu);
-}
-
-bool iButtonSceneAddType::on_event(iButtonApp* app, iButtonEvent* event) {
-    bool consumed = false;
-
-    if(event->type == iButtonEvent::Type::EventTypeMenuSelected) {
-        submenu_item_selected = event->payload.menu_index;
-        iButtonKey* key = app->get_key();
-
-        switch(event->payload.menu_index) {
-        case SubmenuIndexCyfral:
-            ibutton_key_set_type(key, iButtonKeyCyfral);
-            break;
-        case SubmenuIndexDallas:
-            ibutton_key_set_type(key, iButtonKeyDS1990);
-            break;
-        case SubmenuIndexMetakom:
-            ibutton_key_set_type(key, iButtonKeyMetakom);
-            break;
-        }
-        ibutton_key_set_name(key, "");
-        ibutton_key_clear_data(key);
-        app->switch_to_next_scene(iButtonApp::Scene::SceneAddValue);
-        consumed = true;
-    }
-
-    return consumed;
-}
-
-void iButtonSceneAddType::on_exit(iButtonApp* app) {
-    iButtonAppViewManager* view = app->get_view_manager();
-    Submenu* submenu = view->get_submenu();
-
-    submenu_reset(submenu);
-}
diff --git a/applications/ibutton/scene/ibutton_scene_add_type.h b/applications/ibutton/scene/ibutton_scene_add_type.h
deleted file mode 100644
index d49ac128..00000000
--- a/applications/ibutton/scene/ibutton_scene_add_type.h
+++ /dev/null
@@ -1,12 +0,0 @@
-#pragma once
-#include "ibutton_scene_generic.h"
-
-class iButtonSceneAddType : public iButtonScene {
-public:
-    void on_enter(iButtonApp* app) final;
-    bool on_event(iButtonApp* app, iButtonEvent* event) final;
-    void on_exit(iButtonApp* app) final;
-
-private:
-    uint32_t submenu_item_selected = 0;
-};
\ No newline at end of file
diff --git a/applications/ibutton/scene/ibutton_scene_add_value.cpp b/applications/ibutton/scene/ibutton_scene_add_value.cpp
deleted file mode 100755
index cb1e287c..00000000
--- a/applications/ibutton/scene/ibutton_scene_add_value.cpp
+++ /dev/null
@@ -1,53 +0,0 @@
-#include "ibutton_scene_add_value.h"
-#include "../ibutton_app.h"
-#include <dolphin/dolphin.h>
-
-static void byte_input_callback(void* context) {
-    furi_assert(context);
-    iButtonApp* app = static_cast<iButtonApp*>(context);
-    iButtonEvent event;
-
-    event.type = iButtonEvent::Type::EventTypeByteEditResult;
-    app->get_view_manager()->send_event(&event);
-}
-
-void iButtonSceneAddValue::on_enter(iButtonApp* app) {
-    iButtonAppViewManager* view_manager = app->get_view_manager();
-    ByteInput* byte_input = view_manager->get_byte_input();
-    iButtonKey* key = app->get_key();
-
-    memcpy(this->new_key_data, ibutton_key_get_data_p(key), ibutton_key_get_data_size(key));
-
-    byte_input_set_result_callback(
-        byte_input,
-        byte_input_callback,
-        NULL,
-        app,
-        this->new_key_data,
-        ibutton_key_get_data_size(key));
-
-    byte_input_set_header_text(byte_input, "Enter the key");
-
-    view_manager->switch_to(iButtonAppViewManager::Type::iButtonAppViewByteInput);
-}
-
-bool iButtonSceneAddValue::on_event(iButtonApp* app, iButtonEvent* event) {
-    bool consumed = false;
-
-    if(event->type == iButtonEvent::Type::EventTypeByteEditResult) {
-        ibutton_key_set_data(app->get_key(), this->new_key_data, IBUTTON_KEY_DATA_SIZE);
-        DOLPHIN_DEED(DolphinDeedIbuttonAdd);
-        app->switch_to_next_scene(iButtonApp::Scene::SceneSaveName);
-        consumed = true;
-    }
-
-    return consumed;
-}
-
-void iButtonSceneAddValue::on_exit(iButtonApp* app) {
-    iButtonAppViewManager* view_manager = app->get_view_manager();
-    ByteInput* byte_input = view_manager->get_byte_input();
-
-    byte_input_set_result_callback(byte_input, NULL, NULL, NULL, NULL, 0);
-    byte_input_set_header_text(byte_input, {0});
-}
\ No newline at end of file
diff --git a/applications/ibutton/scene/ibutton_scene_add_value.h b/applications/ibutton/scene/ibutton_scene_add_value.h
deleted file mode 100644
index ff6de577..00000000
--- a/applications/ibutton/scene/ibutton_scene_add_value.h
+++ /dev/null
@@ -1,13 +0,0 @@
-#pragma once
-#include "ibutton_scene_generic.h"
-#include <one_wire/ibutton/ibutton_key.h>
-
-class iButtonSceneAddValue : public iButtonScene {
-public:
-    void on_enter(iButtonApp* app) final;
-    bool on_event(iButtonApp* app, iButtonEvent* event) final;
-    void on_exit(iButtonApp* app) final;
-
-private:
-    uint8_t new_key_data[IBUTTON_KEY_DATA_SIZE] = {};
-};
\ No newline at end of file
diff --git a/applications/ibutton/scene/ibutton_scene_delete_confirm.cpp b/applications/ibutton/scene/ibutton_scene_delete_confirm.cpp
deleted file mode 100755
index 8e782e33..00000000
--- a/applications/ibutton/scene/ibutton_scene_delete_confirm.cpp
+++ /dev/null
@@ -1,86 +0,0 @@
-#include "ibutton_scene_delete_confirm.h"
-#include "../ibutton_app.h"
-
-static void widget_callback(GuiButtonType result, InputType type, void* context) {
-    furi_assert(context);
-    iButtonApp* app = static_cast<iButtonApp*>(context);
-    iButtonEvent event;
-
-    if(type == InputTypeShort) {
-        event.type = iButtonEvent::Type::EventTypeWidgetButtonResult;
-        event.payload.widget_button_result = result;
-        app->get_view_manager()->send_event(&event);
-    }
-}
-
-void iButtonSceneDeleteConfirm::on_enter(iButtonApp* app) {
-    iButtonAppViewManager* view_manager = app->get_view_manager();
-    Widget* widget = view_manager->get_widget();
-    iButtonKey* key = app->get_key();
-    const uint8_t* key_data = ibutton_key_get_data_p(key);
-
-    app->set_text_store("\e#Delete %s?\e#", ibutton_key_get_name_p(key));
-    widget_add_text_box_element(
-        widget, 0, 0, 128, 27, AlignCenter, AlignCenter, app->get_text_store(), false);
-    widget_add_button_element(widget, GuiButtonTypeLeft, "Cancel", widget_callback, app);
-    widget_add_button_element(widget, GuiButtonTypeRight, "Delete", widget_callback, app);
-
-    switch(ibutton_key_get_type(key)) {
-    case iButtonKeyDS1990:
-        app->set_text_store(
-            "%02X %02X %02X %02X %02X %02X %02X %02X",
-            key_data[0],
-            key_data[1],
-            key_data[2],
-            key_data[3],
-            key_data[4],
-            key_data[5],
-            key_data[6],
-            key_data[7]);
-        widget_add_string_element(
-            widget, 64, 45, AlignCenter, AlignBottom, FontSecondary, "Dallas");
-        break;
-    case iButtonKeyCyfral:
-        app->set_text_store("%02X %02X", key_data[0], key_data[1]);
-        widget_add_string_element(
-            widget, 64, 45, AlignCenter, AlignBottom, FontSecondary, "Cyfral");
-        break;
-    case iButtonKeyMetakom:
-        app->set_text_store(
-            "%02X %02X %02X %02X", key_data[0], key_data[1], key_data[2], key_data[3]);
-        widget_add_string_element(
-            widget, 64, 45, AlignCenter, AlignBottom, FontSecondary, "Metakom");
-        break;
-    }
-    widget_add_string_element(
-        widget, 64, 33, AlignCenter, AlignBottom, FontSecondary, app->get_text_store());
-
-    view_manager->switch_to(iButtonAppViewManager::Type::iButtonAppViewWidget);
-}
-
-bool iButtonSceneDeleteConfirm::on_event(iButtonApp* app, iButtonEvent* event) {
-    bool consumed = false;
-
-    if(event->type == iButtonEvent::Type::EventTypeWidgetButtonResult) {
-        if(event->payload.widget_button_result == GuiButtonTypeRight) {
-            if(app->delete_key()) {
-                app->switch_to_next_scene(iButtonApp::Scene::SceneDeleteSuccess);
-            }
-        } else {
-            app->switch_to_previous_scene();
-        }
-
-        consumed = true;
-    }
-
-    return consumed;
-}
-
-void iButtonSceneDeleteConfirm::on_exit(iButtonApp* app) {
-    iButtonAppViewManager* view_manager = app->get_view_manager();
-    Widget* widget = view_manager->get_widget();
-
-    app->set_text_store("");
-
-    widget_reset(widget);
-}
diff --git a/applications/ibutton/scene/ibutton_scene_delete_confirm.h b/applications/ibutton/scene/ibutton_scene_delete_confirm.h
deleted file mode 100644
index d82c376d..00000000
--- a/applications/ibutton/scene/ibutton_scene_delete_confirm.h
+++ /dev/null
@@ -1,9 +0,0 @@
-#pragma once
-#include "ibutton_scene_generic.h"
-
-class iButtonSceneDeleteConfirm : public iButtonScene {
-public:
-    void on_enter(iButtonApp* app) final;
-    bool on_event(iButtonApp* app, iButtonEvent* event) final;
-    void on_exit(iButtonApp* app) final;
-};
\ No newline at end of file
diff --git a/applications/ibutton/scene/ibutton_scene_delete_success.cpp b/applications/ibutton/scene/ibutton_scene_delete_success.cpp
deleted file mode 100644
index 8c645a5f..00000000
--- a/applications/ibutton/scene/ibutton_scene_delete_success.cpp
+++ /dev/null
@@ -1,47 +0,0 @@
-#include "ibutton_scene_delete_success.h"
-#include "../ibutton_app.h"
-
-static void popup_callback(void* context) {
-    furi_assert(context);
-    iButtonApp* app = static_cast<iButtonApp*>(context);
-    iButtonEvent event;
-    event.type = iButtonEvent::Type::EventTypeBack;
-    app->get_view_manager()->send_event(&event);
-}
-
-void iButtonSceneDeleteSuccess::on_enter(iButtonApp* app) {
-    iButtonAppViewManager* view_manager = app->get_view_manager();
-    Popup* popup = view_manager->get_popup();
-
-    popup_set_icon(popup, 0, 2, &I_DolphinMafia_115x62);
-    popup_set_header(popup, "Deleted", 83, 19, AlignLeft, AlignBottom);
-
-    popup_set_callback(popup, popup_callback);
-    popup_set_context(popup, app);
-    popup_set_timeout(popup, 1500);
-    popup_enable_timeout(popup);
-
-    view_manager->switch_to(iButtonAppViewManager::Type::iButtonAppViewPopup);
-}
-
-bool iButtonSceneDeleteSuccess::on_event(iButtonApp* app, iButtonEvent* event) {
-    bool consumed = false;
-
-    if(event->type == iButtonEvent::Type::EventTypeBack) {
-        app->search_and_switch_to_previous_scene({iButtonApp::Scene::SceneSelectKey});
-        consumed = true;
-    }
-
-    return consumed;
-}
-
-void iButtonSceneDeleteSuccess::on_exit(iButtonApp* app) {
-    Popup* popup = app->get_view_manager()->get_popup();
-
-    popup_set_text(popup, NULL, 0, 0, AlignCenter, AlignTop);
-    popup_set_icon(popup, 0, 0, NULL);
-
-    popup_disable_timeout(popup);
-    popup_set_context(popup, NULL);
-    popup_set_callback(popup, NULL);
-}
\ No newline at end of file
diff --git a/applications/ibutton/scene/ibutton_scene_delete_success.h b/applications/ibutton/scene/ibutton_scene_delete_success.h
deleted file mode 100644
index 0c17c7ed..00000000
--- a/applications/ibutton/scene/ibutton_scene_delete_success.h
+++ /dev/null
@@ -1,9 +0,0 @@
-#pragma once
-#include "ibutton_scene_generic.h"
-
-class iButtonSceneDeleteSuccess : public iButtonScene {
-public:
-    void on_enter(iButtonApp* app) final;
-    bool on_event(iButtonApp* app, iButtonEvent* event) final;
-    void on_exit(iButtonApp* app) final;
-};
\ No newline at end of file
diff --git a/applications/ibutton/scene/ibutton_scene_emulate.h b/applications/ibutton/scene/ibutton_scene_emulate.h
deleted file mode 100644
index c2bedcc5..00000000
--- a/applications/ibutton/scene/ibutton_scene_emulate.h
+++ /dev/null
@@ -1,9 +0,0 @@
-#pragma once
-#include "ibutton_scene_generic.h"
-
-class iButtonSceneEmulate : public iButtonScene {
-public:
-    void on_enter(iButtonApp* app) final;
-    bool on_event(iButtonApp* app, iButtonEvent* event) final;
-    void on_exit(iButtonApp* app) final;
-};
\ No newline at end of file
diff --git a/applications/ibutton/scene/ibutton_scene_exit_confirm.cpp b/applications/ibutton/scene/ibutton_scene_exit_confirm.cpp
deleted file mode 100644
index 2c9fe94c..00000000
--- a/applications/ibutton/scene/ibutton_scene_exit_confirm.cpp
+++ /dev/null
@@ -1,51 +0,0 @@
-#include "ibutton_scene_exit_confirm.h"
-#include "../ibutton_app.h"
-
-static void widget_callback(GuiButtonType result, InputType type, void* context) {
-    furi_assert(context);
-    iButtonApp* app = static_cast<iButtonApp*>(context);
-    iButtonEvent event;
-
-    if(type == InputTypeShort) {
-        event.type = iButtonEvent::Type::EventTypeWidgetButtonResult;
-        event.payload.widget_button_result = result;
-        app->get_view_manager()->send_event(&event);
-    }
-}
-
-void iButtonSceneExitConfirm::on_enter(iButtonApp* app) {
-    iButtonAppViewManager* view_manager = app->get_view_manager();
-    Widget* widget = view_manager->get_widget();
-
-    widget_add_button_element(widget, GuiButtonTypeLeft, "Exit", widget_callback, app);
-    widget_add_button_element(widget, GuiButtonTypeRight, "Stay", widget_callback, app);
-    widget_add_string_element(
-        widget, 64, 19, AlignCenter, AlignBottom, FontPrimary, "Exit to iButton menu");
-    widget_add_string_element(
-        widget, 64, 29, AlignCenter, AlignBottom, FontSecondary, "All unsaved data will be lost");
-
-    view_manager->switch_to(iButtonAppViewManager::Type::iButtonAppViewWidget);
-}
-
-bool iButtonSceneExitConfirm::on_event(iButtonApp* app, iButtonEvent* event) {
-    bool consumed = false;
-
-    if(event->type == iButtonEvent::Type::EventTypeWidgetButtonResult) {
-        if(event->payload.widget_button_result == GuiButtonTypeLeft) {
-            app->search_and_switch_to_previous_scene({iButtonApp::Scene::SceneStart});
-        } else if(event->payload.widget_button_result == GuiButtonTypeRight) {
-            app->switch_to_previous_scene();
-        }
-        consumed = true;
-    } else if(event->type == iButtonEvent::Type::EventTypeBack) {
-        consumed = true;
-    }
-
-    return consumed;
-}
-
-void iButtonSceneExitConfirm::on_exit(iButtonApp* app) {
-    iButtonAppViewManager* view_manager = app->get_view_manager();
-    Widget* widget = view_manager->get_widget();
-    widget_reset(widget);
-}
diff --git a/applications/ibutton/scene/ibutton_scene_exit_confirm.h b/applications/ibutton/scene/ibutton_scene_exit_confirm.h
deleted file mode 100644
index dc5981e1..00000000
--- a/applications/ibutton/scene/ibutton_scene_exit_confirm.h
+++ /dev/null
@@ -1,9 +0,0 @@
-#pragma once
-#include "ibutton_scene_generic.h"
-
-class iButtonSceneExitConfirm : public iButtonScene {
-public:
-    void on_enter(iButtonApp* app) final;
-    bool on_event(iButtonApp* app, iButtonEvent* event) final;
-    void on_exit(iButtonApp* app) final;
-};
\ No newline at end of file
diff --git a/applications/ibutton/scene/ibutton_scene_generic.h b/applications/ibutton/scene/ibutton_scene_generic.h
deleted file mode 100644
index 0e2444b5..00000000
--- a/applications/ibutton/scene/ibutton_scene_generic.h
+++ /dev/null
@@ -1,14 +0,0 @@
-#pragma once
-#include "../ibutton_event.h"
-
-class iButtonApp;
-
-class iButtonScene {
-public:
-    virtual void on_enter(iButtonApp* app) = 0;
-    virtual bool on_event(iButtonApp* app, iButtonEvent* event) = 0;
-    virtual void on_exit(iButtonApp* app) = 0;
-    virtual ~iButtonScene(){};
-
-private:
-};
diff --git a/applications/ibutton/scene/ibutton_scene_info.cpp b/applications/ibutton/scene/ibutton_scene_info.cpp
deleted file mode 100755
index e51b2095..00000000
--- a/applications/ibutton/scene/ibutton_scene_info.cpp
+++ /dev/null
@@ -1,59 +0,0 @@
-#include "ibutton_scene_info.h"
-#include "../ibutton_app.h"
-
-void iButtonSceneInfo::on_enter(iButtonApp* app) {
-    iButtonAppViewManager* view_manager = app->get_view_manager();
-    Widget* widget = view_manager->get_widget();
-    iButtonKey* key = app->get_key();
-    const uint8_t* key_data = ibutton_key_get_data_p(key);
-
-    app->set_text_store("%s", ibutton_key_get_name_p(key));
-    widget_add_text_box_element(
-        widget, 0, 0, 128, 28, AlignCenter, AlignCenter, app->get_text_store(), false);
-
-    switch(ibutton_key_get_type(key)) {
-    case iButtonKeyDS1990:
-        app->set_text_store(
-            "%02X %02X %02X %02X %02X %02X %02X %02X",
-            key_data[0],
-            key_data[1],
-            key_data[2],
-            key_data[3],
-            key_data[4],
-            key_data[5],
-            key_data[6],
-            key_data[7]);
-        widget_add_string_element(
-            widget, 64, 51, AlignCenter, AlignBottom, FontSecondary, "Dallas");
-        break;
-    case iButtonKeyMetakom:
-        app->set_text_store(
-            "%02X %02X %02X %02X", key_data[0], key_data[1], key_data[2], key_data[3]);
-        widget_add_string_element(
-            widget, 64, 51, AlignCenter, AlignBottom, FontSecondary, "Metakom");
-        break;
-    case iButtonKeyCyfral:
-        app->set_text_store("%02X %02X", key_data[0], key_data[1]);
-        widget_add_string_element(
-            widget, 64, 51, AlignCenter, AlignBottom, FontSecondary, "Cyfral");
-        break;
-    }
-    widget_add_string_element(
-        widget, 64, 35, AlignCenter, AlignBottom, FontPrimary, app->get_text_store());
-
-    view_manager->switch_to(iButtonAppViewManager::Type::iButtonAppViewWidget);
-}
-
-bool iButtonSceneInfo::on_event(iButtonApp* app, iButtonEvent* event) {
-    bool consumed = false;
-    return consumed;
-}
-
-void iButtonSceneInfo::on_exit(iButtonApp* app) {
-    iButtonAppViewManager* view_manager = app->get_view_manager();
-    Widget* widget = view_manager->get_widget();
-
-    app->set_text_store("");
-
-    widget_reset(widget);
-}
diff --git a/applications/ibutton/scene/ibutton_scene_info.h b/applications/ibutton/scene/ibutton_scene_info.h
deleted file mode 100644
index e2c6b2cf..00000000
--- a/applications/ibutton/scene/ibutton_scene_info.h
+++ /dev/null
@@ -1,9 +0,0 @@
-#pragma once
-#include "ibutton_scene_generic.h"
-
-class iButtonSceneInfo : public iButtonScene {
-public:
-    void on_enter(iButtonApp* app) final;
-    bool on_event(iButtonApp* app, iButtonEvent* event) final;
-    void on_exit(iButtonApp* app) final;
-};
\ No newline at end of file
diff --git a/applications/ibutton/scene/ibutton_scene_read.cpp b/applications/ibutton/scene/ibutton_scene_read.cpp
deleted file mode 100644
index 7162652d..00000000
--- a/applications/ibutton/scene/ibutton_scene_read.cpp
+++ /dev/null
@@ -1,69 +0,0 @@
-#include "ibutton_scene_read.h"
-#include "../ibutton_app.h"
-#include <dolphin/dolphin.h>
-
-static void read_callback(void* context) {
-    furi_assert(context);
-    iButtonApp* app = static_cast<iButtonApp*>(context);
-    iButtonEvent event = {.type = iButtonEvent::Type::EventTypeWorkerRead};
-    app->get_view_manager()->send_event(&event);
-}
-
-void iButtonSceneRead::on_enter(iButtonApp* app) {
-    iButtonAppViewManager* view_manager = app->get_view_manager();
-    Popup* popup = view_manager->get_popup();
-    iButtonKey* key = app->get_key();
-    iButtonWorker* worker = app->get_key_worker();
-    DOLPHIN_DEED(DolphinDeedIbuttonRead);
-
-    popup_set_header(popup, "iButton", 95, 26, AlignCenter, AlignBottom);
-    popup_set_text(popup, "waiting\nfor key ...", 95, 30, AlignCenter, AlignTop);
-    popup_set_icon(popup, 0, 5, &I_DolphinWait_61x59);
-
-    view_manager->switch_to(iButtonAppViewManager::Type::iButtonAppViewPopup);
-    ibutton_key_set_name(key, "");
-
-    ibutton_worker_read_set_callback(worker, read_callback, app);
-    ibutton_worker_read_start(worker, key);
-}
-
-bool iButtonSceneRead::on_event(iButtonApp* app, iButtonEvent* event) {
-    bool consumed = false;
-
-    if(event->type == iButtonEvent::Type::EventTypeWorkerRead) {
-        consumed = true;
-
-        iButtonKey* key = app->get_key();
-        bool success = false;
-        if(ibutton_key_get_type(key) == iButtonKeyDS1990) {
-            if(!ibutton_key_dallas_crc_is_valid(key)) {
-                app->switch_to_next_scene(iButtonApp::Scene::SceneReadCRCError);
-            } else if(!ibutton_key_dallas_is_1990_key(key)) {
-                app->switch_to_next_scene(iButtonApp::Scene::SceneReadNotKeyError);
-            } else {
-                success = true;
-            }
-        } else {
-            success = true;
-        }
-        if(success) {
-            app->notify_success();
-            app->notify_green_on();
-            DOLPHIN_DEED(DolphinDeedIbuttonReadSuccess);
-            app->switch_to_next_scene(iButtonApp::Scene::SceneReadSuccess);
-        }
-    } else if(event->type == iButtonEvent::Type::EventTypeTick) {
-        consumed = true;
-        app->notify_read();
-    }
-
-    return consumed;
-}
-
-void iButtonSceneRead::on_exit(iButtonApp* app) {
-    Popup* popup = app->get_view_manager()->get_popup();
-    ibutton_worker_stop(app->get_key_worker());
-    popup_set_header(popup, NULL, 0, 0, AlignCenter, AlignBottom);
-    popup_set_text(popup, NULL, 0, 0, AlignCenter, AlignTop);
-    popup_set_icon(popup, 0, 0, NULL);
-}
diff --git a/applications/ibutton/scene/ibutton_scene_read.h b/applications/ibutton/scene/ibutton_scene_read.h
deleted file mode 100644
index b9fefb0c..00000000
--- a/applications/ibutton/scene/ibutton_scene_read.h
+++ /dev/null
@@ -1,9 +0,0 @@
-#pragma once
-#include "ibutton_scene_generic.h"
-
-class iButtonSceneRead : public iButtonScene {
-public:
-    void on_enter(iButtonApp* app) final;
-    bool on_event(iButtonApp* app, iButtonEvent* event) final;
-    void on_exit(iButtonApp* app) final;
-};
\ No newline at end of file
diff --git a/applications/ibutton/scene/ibutton_scene_read_crc_error.cpp b/applications/ibutton/scene/ibutton_scene_read_crc_error.cpp
deleted file mode 100644
index 213266cb..00000000
--- a/applications/ibutton/scene/ibutton_scene_read_crc_error.cpp
+++ /dev/null
@@ -1,74 +0,0 @@
-#include "ibutton_scene_read_crc_error.h"
-#include "../ibutton_app.h"
-#include <one_wire/maxim_crc.h>
-
-static void dialog_ex_callback(DialogExResult result, void* context) {
-    furi_assert(context);
-    iButtonApp* app = static_cast<iButtonApp*>(context);
-    iButtonEvent event;
-
-    event.type = iButtonEvent::Type::EventTypeDialogResult;
-    event.payload.dialog_result = result;
-
-    app->get_view_manager()->send_event(&event);
-}
-
-void iButtonSceneReadCRCError::on_enter(iButtonApp* app) {
-    iButtonAppViewManager* view_manager = app->get_view_manager();
-    DialogEx* dialog_ex = view_manager->get_dialog_ex();
-    const uint8_t* key_data = ibutton_key_get_data_p(app->get_key());
-
-    app->set_text_store(
-        "%02X %02X %02X %02X %02X %02X %02X %02X\nExpected CRC: %X",
-        key_data[0],
-        key_data[1],
-        key_data[2],
-        key_data[3],
-        key_data[4],
-        key_data[5],
-        key_data[6],
-        key_data[7],
-        maxim_crc8(key_data, 7, MAXIM_CRC8_INIT));
-
-    dialog_ex_set_header(dialog_ex, "CRC ERROR", 64, 10, AlignCenter, AlignCenter);
-    dialog_ex_set_text(dialog_ex, app->get_text_store(), 64, 19, AlignCenter, AlignTop);
-    dialog_ex_set_left_button_text(dialog_ex, "Retry");
-    dialog_ex_set_right_button_text(dialog_ex, "More");
-    dialog_ex_set_result_callback(dialog_ex, dialog_ex_callback);
-    dialog_ex_set_context(dialog_ex, app);
-
-    view_manager->switch_to(iButtonAppViewManager::Type::iButtonAppViewDialogEx);
-    app->notify_error();
-    app->notify_red_on();
-}
-
-bool iButtonSceneReadCRCError::on_event(iButtonApp* app, iButtonEvent* event) {
-    bool consumed = false;
-
-    if(event->type == iButtonEvent::Type::EventTypeDialogResult) {
-        if(event->payload.dialog_result == DialogExResultRight) {
-            app->switch_to_next_scene(iButtonApp::Scene::SceneReadKeyMenu);
-        } else {
-            app->switch_to_previous_scene();
-        }
-
-        consumed = true;
-    }
-
-    return consumed;
-}
-
-void iButtonSceneReadCRCError::on_exit(iButtonApp* app) {
-    iButtonAppViewManager* view_manager = app->get_view_manager();
-    DialogEx* dialog_ex = view_manager->get_dialog_ex();
-
-    app->set_text_store("");
-
-    dialog_ex_set_header(dialog_ex, NULL, 0, 0, AlignCenter, AlignCenter);
-    dialog_ex_set_text(dialog_ex, NULL, 0, 0, AlignCenter, AlignTop);
-    dialog_ex_set_left_button_text(dialog_ex, NULL);
-    dialog_ex_set_result_callback(dialog_ex, NULL);
-    dialog_ex_set_context(dialog_ex, NULL);
-
-    app->notify_red_off();
-}
\ No newline at end of file
diff --git a/applications/ibutton/scene/ibutton_scene_read_crc_error.h b/applications/ibutton/scene/ibutton_scene_read_crc_error.h
deleted file mode 100644
index 43a4dfac..00000000
--- a/applications/ibutton/scene/ibutton_scene_read_crc_error.h
+++ /dev/null
@@ -1,9 +0,0 @@
-#pragma once
-#include "ibutton_scene_generic.h"
-
-class iButtonSceneReadCRCError : public iButtonScene {
-public:
-    void on_enter(iButtonApp* app) final;
-    bool on_event(iButtonApp* app, iButtonEvent* event) final;
-    void on_exit(iButtonApp* app) final;
-};
\ No newline at end of file
diff --git a/applications/ibutton/scene/ibutton_scene_read_key_menu.cpp b/applications/ibutton/scene/ibutton_scene_read_key_menu.cpp
deleted file mode 100644
index 215eb76f..00000000
--- a/applications/ibutton/scene/ibutton_scene_read_key_menu.cpp
+++ /dev/null
@@ -1,65 +0,0 @@
-#include "ibutton_scene_read_key_menu.h"
-#include "../ibutton_app.h"
-
-typedef enum {
-    SubmenuIndexSave,
-    SubmenuIndexEmulate,
-    SubmenuIndexWrite,
-} SubmenuIndex;
-
-static void submenu_callback(void* context, uint32_t index) {
-    furi_assert(context);
-    iButtonApp* app = static_cast<iButtonApp*>(context);
-    iButtonEvent event;
-
-    event.type = iButtonEvent::Type::EventTypeMenuSelected;
-    event.payload.menu_index = index;
-
-    app->get_view_manager()->send_event(&event);
-}
-
-void iButtonSceneReadKeyMenu::on_enter(iButtonApp* app) {
-    iButtonAppViewManager* view_manager = app->get_view_manager();
-    Submenu* submenu = view_manager->get_submenu();
-
-    submenu_add_item(submenu, "Save", SubmenuIndexSave, submenu_callback, app);
-    submenu_add_item(submenu, "Emulate", SubmenuIndexEmulate, submenu_callback, app);
-    if(ibutton_key_get_type(app->get_key()) == iButtonKeyDS1990) {
-        submenu_add_item(submenu, "Write", SubmenuIndexWrite, submenu_callback, app);
-    }
-    submenu_set_selected_item(submenu, submenu_item_selected);
-
-    view_manager->switch_to(iButtonAppViewManager::Type::iButtonAppViewSubmenu);
-}
-
-bool iButtonSceneReadKeyMenu::on_event(iButtonApp* app, iButtonEvent* event) {
-    bool consumed = false;
-
-    if(event->type == iButtonEvent::Type::EventTypeMenuSelected) {
-        submenu_item_selected = event->payload.menu_index;
-        switch(event->payload.menu_index) {
-        case SubmenuIndexWrite:
-            app->switch_to_next_scene(iButtonApp::Scene::SceneWrite);
-            break;
-        case SubmenuIndexEmulate:
-            app->switch_to_next_scene(iButtonApp::Scene::SceneEmulate);
-            break;
-        case SubmenuIndexSave:
-            app->switch_to_next_scene(iButtonApp::Scene::SceneSaveName);
-            break;
-        }
-        consumed = true;
-    } else if(event->type == iButtonEvent::Type::EventTypeBack) {
-        app->switch_to_previous_scene();
-        consumed = true;
-    }
-
-    return consumed;
-}
-
-void iButtonSceneReadKeyMenu::on_exit(iButtonApp* app) {
-    iButtonAppViewManager* view = app->get_view_manager();
-    Submenu* submenu = view->get_submenu();
-
-    submenu_reset(submenu);
-}
diff --git a/applications/ibutton/scene/ibutton_scene_read_key_menu.h b/applications/ibutton/scene/ibutton_scene_read_key_menu.h
deleted file mode 100644
index e85ad815..00000000
--- a/applications/ibutton/scene/ibutton_scene_read_key_menu.h
+++ /dev/null
@@ -1,12 +0,0 @@
-#pragma once
-#include "ibutton_scene_generic.h"
-
-class iButtonSceneReadKeyMenu : public iButtonScene {
-public:
-    void on_enter(iButtonApp* app) final;
-    bool on_event(iButtonApp* app, iButtonEvent* event) final;
-    void on_exit(iButtonApp* app) final;
-
-private:
-    uint32_t submenu_item_selected = 0;
-};
\ No newline at end of file
diff --git a/applications/ibutton/scene/ibutton_scene_read_not_key_error.cpp b/applications/ibutton/scene/ibutton_scene_read_not_key_error.cpp
deleted file mode 100644
index 7d0a235f..00000000
--- a/applications/ibutton/scene/ibutton_scene_read_not_key_error.cpp
+++ /dev/null
@@ -1,74 +0,0 @@
-#include "ibutton_scene_read_not_key_error.h"
-#include "../ibutton_app.h"
-#include <one_wire/maxim_crc.h>
-
-static void dialog_ex_callback(DialogExResult result, void* context) {
-    furi_assert(context);
-    iButtonApp* app = static_cast<iButtonApp*>(context);
-    iButtonEvent event;
-
-    event.type = iButtonEvent::Type::EventTypeDialogResult;
-    event.payload.dialog_result = result;
-
-    app->get_view_manager()->send_event(&event);
-}
-
-void iButtonSceneReadNotKeyError::on_enter(iButtonApp* app) {
-    iButtonAppViewManager* view_manager = app->get_view_manager();
-    DialogEx* dialog_ex = view_manager->get_dialog_ex();
-    const uint8_t* key_data = ibutton_key_get_data_p(app->get_key());
-
-    app->set_text_store(
-        "THIS IS NOT A KEY\n%02X %02X %02X %02X %02X %02X %02X %02X",
-        key_data[0],
-        key_data[1],
-        key_data[2],
-        key_data[3],
-        key_data[4],
-        key_data[5],
-        key_data[6],
-        key_data[7],
-        maxim_crc8(key_data, 7, MAXIM_CRC8_INIT));
-
-    dialog_ex_set_header(dialog_ex, "ERROR:", 64, 10, AlignCenter, AlignCenter);
-    dialog_ex_set_text(dialog_ex, app->get_text_store(), 64, 19, AlignCenter, AlignTop);
-    dialog_ex_set_left_button_text(dialog_ex, "Retry");
-    dialog_ex_set_right_button_text(dialog_ex, "More");
-    dialog_ex_set_result_callback(dialog_ex, dialog_ex_callback);
-    dialog_ex_set_context(dialog_ex, app);
-
-    view_manager->switch_to(iButtonAppViewManager::Type::iButtonAppViewDialogEx);
-    app->notify_error();
-    app->notify_red_on();
-}
-
-bool iButtonSceneReadNotKeyError::on_event(iButtonApp* app, iButtonEvent* event) {
-    bool consumed = false;
-
-    if(event->type == iButtonEvent::Type::EventTypeDialogResult) {
-        if(event->payload.dialog_result == DialogExResultRight) {
-            app->switch_to_next_scene(iButtonApp::Scene::SceneReadKeyMenu);
-        } else {
-            app->switch_to_previous_scene();
-        }
-
-        consumed = true;
-    }
-
-    return consumed;
-}
-
-void iButtonSceneReadNotKeyError::on_exit(iButtonApp* app) {
-    iButtonAppViewManager* view_manager = app->get_view_manager();
-    DialogEx* dialog_ex = view_manager->get_dialog_ex();
-
-    app->set_text_store("");
-
-    dialog_ex_set_header(dialog_ex, NULL, 0, 0, AlignCenter, AlignCenter);
-    dialog_ex_set_text(dialog_ex, NULL, 0, 0, AlignCenter, AlignTop);
-    dialog_ex_set_left_button_text(dialog_ex, NULL);
-    dialog_ex_set_result_callback(dialog_ex, NULL);
-    dialog_ex_set_context(dialog_ex, NULL);
-
-    app->notify_red_off();
-}
\ No newline at end of file
diff --git a/applications/ibutton/scene/ibutton_scene_read_not_key_error.h b/applications/ibutton/scene/ibutton_scene_read_not_key_error.h
deleted file mode 100644
index 6643a206..00000000
--- a/applications/ibutton/scene/ibutton_scene_read_not_key_error.h
+++ /dev/null
@@ -1,9 +0,0 @@
-#pragma once
-#include "ibutton_scene_generic.h"
-
-class iButtonSceneReadNotKeyError : public iButtonScene {
-public:
-    void on_enter(iButtonApp* app) final;
-    bool on_event(iButtonApp* app, iButtonEvent* event) final;
-    void on_exit(iButtonApp* app) final;
-};
\ No newline at end of file
diff --git a/applications/ibutton/scene/ibutton_scene_read_success.cpp b/applications/ibutton/scene/ibutton_scene_read_success.cpp
deleted file mode 100644
index c4523904..00000000
--- a/applications/ibutton/scene/ibutton_scene_read_success.cpp
+++ /dev/null
@@ -1,86 +0,0 @@
-#include "ibutton_scene_read_success.h"
-#include "../ibutton_app.h"
-#include <dolphin/dolphin.h>
-
-static void dialog_ex_callback(DialogExResult result, void* context) {
-    furi_assert(context);
-    iButtonApp* app = static_cast<iButtonApp*>(context);
-    iButtonEvent event;
-
-    event.type = iButtonEvent::Type::EventTypeDialogResult;
-    event.payload.dialog_result = result;
-
-    app->get_view_manager()->send_event(&event);
-}
-
-void iButtonSceneReadSuccess::on_enter(iButtonApp* app) {
-    iButtonAppViewManager* view_manager = app->get_view_manager();
-    DialogEx* dialog_ex = view_manager->get_dialog_ex();
-    iButtonKey* key = app->get_key();
-    const uint8_t* key_data = ibutton_key_get_data_p(key);
-
-    switch(ibutton_key_get_type(key)) {
-    case iButtonKeyDS1990:
-        app->set_text_store(
-            "Dallas\n%02X %02X %02X %02X\n%02X %02X %02X %02X",
-            key_data[0],
-            key_data[1],
-            key_data[2],
-            key_data[3],
-            key_data[4],
-            key_data[5],
-            key_data[6],
-            key_data[7]);
-        break;
-    case iButtonKeyCyfral:
-        app->set_text_store("Cyfral\n%02X %02X", key_data[0], key_data[1]);
-        break;
-    case iButtonKeyMetakom:
-        app->set_text_store(
-            "Metakom\n%02X %02X %02X %02X", key_data[0], key_data[1], key_data[2], key_data[3]);
-        break;
-    }
-
-    dialog_ex_set_text(dialog_ex, app->get_text_store(), 95, 30, AlignCenter, AlignCenter);
-    dialog_ex_set_left_button_text(dialog_ex, "Retry");
-    dialog_ex_set_right_button_text(dialog_ex, "More");
-    dialog_ex_set_icon(dialog_ex, 0, 1, &I_DolphinReadingSuccess_59x63);
-    dialog_ex_set_result_callback(dialog_ex, dialog_ex_callback);
-    dialog_ex_set_context(dialog_ex, app);
-
-    view_manager->switch_to(iButtonAppViewManager::Type::iButtonAppViewDialogEx);
-}
-
-bool iButtonSceneReadSuccess::on_event(iButtonApp* app, iButtonEvent* event) {
-    bool consumed = false;
-
-    if(event->type == iButtonEvent::Type::EventTypeDialogResult) {
-        if(event->payload.dialog_result == DialogExResultRight) {
-            app->switch_to_next_scene(iButtonApp::Scene::SceneReadKeyMenu);
-        } else {
-            app->switch_to_next_scene(iButtonApp::Scene::SceneRetryConfirm);
-        }
-        consumed = true;
-    } else if(event->type == iButtonEvent::Type::EventTypeBack) {
-        app->switch_to_next_scene(iButtonApp::Scene::SceneExitConfirm);
-        consumed = true;
-    }
-
-    return consumed;
-}
-
-void iButtonSceneReadSuccess::on_exit(iButtonApp* app) {
-    iButtonAppViewManager* view_manager = app->get_view_manager();
-    DialogEx* dialog_ex = view_manager->get_dialog_ex();
-
-    app->set_text_store("");
-
-    dialog_ex_set_text(dialog_ex, NULL, 0, 0, AlignCenter, AlignTop);
-    dialog_ex_set_left_button_text(dialog_ex, NULL);
-    dialog_ex_set_right_button_text(dialog_ex, NULL);
-    dialog_ex_set_result_callback(dialog_ex, NULL);
-    dialog_ex_set_context(dialog_ex, NULL);
-    dialog_ex_set_icon(dialog_ex, 0, 0, NULL);
-
-    app->notify_green_off();
-}
diff --git a/applications/ibutton/scene/ibutton_scene_read_success.h b/applications/ibutton/scene/ibutton_scene_read_success.h
deleted file mode 100644
index 9548d6b4..00000000
--- a/applications/ibutton/scene/ibutton_scene_read_success.h
+++ /dev/null
@@ -1,9 +0,0 @@
-#pragma once
-#include "ibutton_scene_generic.h"
-
-class iButtonSceneReadSuccess : public iButtonScene {
-public:
-    void on_enter(iButtonApp* app) final;
-    bool on_event(iButtonApp* app, iButtonEvent* event) final;
-    void on_exit(iButtonApp* app) final;
-};
\ No newline at end of file
diff --git a/applications/ibutton/scene/ibutton_scene_retry_confirm.cpp b/applications/ibutton/scene/ibutton_scene_retry_confirm.cpp
deleted file mode 100644
index aa3483b3..00000000
--- a/applications/ibutton/scene/ibutton_scene_retry_confirm.cpp
+++ /dev/null
@@ -1,51 +0,0 @@
-#include "ibutton_scene_retry_confirm.h"
-#include "../ibutton_app.h"
-
-static void widget_callback(GuiButtonType result, InputType type, void* context) {
-    furi_assert(context);
-    iButtonApp* app = static_cast<iButtonApp*>(context);
-    iButtonEvent event;
-
-    if(type == InputTypeShort) {
-        event.type = iButtonEvent::Type::EventTypeWidgetButtonResult;
-        event.payload.widget_button_result = result;
-        app->get_view_manager()->send_event(&event);
-    }
-}
-
-void iButtonSceneRetryConfirm::on_enter(iButtonApp* app) {
-    iButtonAppViewManager* view_manager = app->get_view_manager();
-    Widget* widget = view_manager->get_widget();
-
-    widget_add_button_element(widget, GuiButtonTypeLeft, "Exit", widget_callback, app);
-    widget_add_button_element(widget, GuiButtonTypeRight, "Stay", widget_callback, app);
-    widget_add_string_element(
-        widget, 64, 19, AlignCenter, AlignBottom, FontPrimary, "Return to reading?");
-    widget_add_string_element(
-        widget, 64, 29, AlignCenter, AlignBottom, FontSecondary, "All unsaved data will be lost");
-
-    view_manager->switch_to(iButtonAppViewManager::Type::iButtonAppViewWidget);
-}
-
-bool iButtonSceneRetryConfirm::on_event(iButtonApp* app, iButtonEvent* event) {
-    bool consumed = false;
-
-    if(event->type == iButtonEvent::Type::EventTypeWidgetButtonResult) {
-        if(event->payload.widget_button_result == GuiButtonTypeLeft) {
-            app->search_and_switch_to_previous_scene({iButtonApp::Scene::SceneRead});
-        } else if(event->payload.widget_button_result == GuiButtonTypeRight) {
-            app->switch_to_previous_scene();
-        }
-        consumed = true;
-    } else if(event->type == iButtonEvent::Type::EventTypeBack) {
-        consumed = true;
-    }
-
-    return consumed;
-}
-
-void iButtonSceneRetryConfirm::on_exit(iButtonApp* app) {
-    iButtonAppViewManager* view_manager = app->get_view_manager();
-    Widget* widget = view_manager->get_widget();
-    widget_reset(widget);
-}
diff --git a/applications/ibutton/scene/ibutton_scene_retry_confirm.h b/applications/ibutton/scene/ibutton_scene_retry_confirm.h
deleted file mode 100644
index 2f96e13f..00000000
--- a/applications/ibutton/scene/ibutton_scene_retry_confirm.h
+++ /dev/null
@@ -1,9 +0,0 @@
-#pragma once
-#include "ibutton_scene_generic.h"
-
-class iButtonSceneRetryConfirm : public iButtonScene {
-public:
-    void on_enter(iButtonApp* app) final;
-    bool on_event(iButtonApp* app, iButtonEvent* event) final;
-    void on_exit(iButtonApp* app) final;
-};
\ No newline at end of file
diff --git a/applications/ibutton/scene/ibutton_scene_save_name.cpp b/applications/ibutton/scene/ibutton_scene_save_name.cpp
deleted file mode 100644
index 71eee148..00000000
--- a/applications/ibutton/scene/ibutton_scene_save_name.cpp
+++ /dev/null
@@ -1,70 +0,0 @@
-#include "ibutton_scene_save_name.h"
-#include "../ibutton_app.h"
-#include <lib/toolbox/random_name.h>
-
-static void text_input_callback(void* context) {
-    furi_assert(context);
-    iButtonApp* app = static_cast<iButtonApp*>(context);
-    iButtonEvent event;
-
-    event.type = iButtonEvent::Type::EventTypeTextEditResult;
-
-    app->get_view_manager()->send_event(&event);
-}
-
-void iButtonSceneSaveName::on_enter(iButtonApp* app) {
-    iButtonAppViewManager* view_manager = app->get_view_manager();
-    TextInput* text_input = view_manager->get_text_input();
-
-    const char* key_name = ibutton_key_get_name_p(app->get_key());
-    bool key_name_empty = !strcmp(key_name, "");
-
-    if(key_name_empty) {
-        set_random_name(app->get_text_store(), app->get_text_store_size());
-    } else {
-        app->set_text_store("%s", key_name);
-    }
-
-    text_input_set_header_text(text_input, "Name the key");
-    text_input_set_result_callback(
-        text_input,
-        text_input_callback,
-        app,
-        app->get_text_store(),
-        IBUTTON_KEY_NAME_SIZE,
-        key_name_empty);
-
-    ValidatorIsFile* validator_is_file =
-        validator_is_file_alloc_init(app->app_folder, app->app_extension, key_name);
-    text_input_set_validator(text_input, validator_is_file_callback, validator_is_file);
-
-    view_manager->switch_to(iButtonAppViewManager::Type::iButtonAppViewTextInput);
-}
-
-bool iButtonSceneSaveName::on_event(iButtonApp* app, iButtonEvent* event) {
-    bool consumed = false;
-
-    if(event->type == iButtonEvent::Type::EventTypeTextEditResult) {
-        if(app->save_key(app->get_text_store())) {
-            app->switch_to_next_scene(iButtonApp::Scene::SceneSaveSuccess);
-        } else {
-            app->search_and_switch_to_previous_scene(
-                {iButtonApp::Scene::SceneReadKeyMenu,
-                 iButtonApp::Scene::SceneSavedKeyMenu,
-                 iButtonApp::Scene::SceneAddType});
-        }
-        consumed = true;
-    }
-
-    return consumed;
-}
-
-void iButtonSceneSaveName::on_exit(iButtonApp* app) {
-    TextInput* text_input = app->get_view_manager()->get_text_input();
-
-    void* validator_context = text_input_get_validator_callback_context(text_input);
-    text_input_set_validator(text_input, NULL, NULL);
-    validator_is_file_free((ValidatorIsFile*)validator_context);
-
-    text_input_reset(text_input);
-}
diff --git a/applications/ibutton/scene/ibutton_scene_save_name.h b/applications/ibutton/scene/ibutton_scene_save_name.h
deleted file mode 100644
index 8be593da..00000000
--- a/applications/ibutton/scene/ibutton_scene_save_name.h
+++ /dev/null
@@ -1,9 +0,0 @@
-#pragma once
-#include "ibutton_scene_generic.h"
-
-class iButtonSceneSaveName : public iButtonScene {
-public:
-    void on_enter(iButtonApp* app) final;
-    bool on_event(iButtonApp* app, iButtonEvent* event) final;
-    void on_exit(iButtonApp* app) final;
-};
\ No newline at end of file
diff --git a/applications/ibutton/scene/ibutton_scene_save_success.cpp b/applications/ibutton/scene/ibutton_scene_save_success.cpp
deleted file mode 100644
index 13e173d2..00000000
--- a/applications/ibutton/scene/ibutton_scene_save_success.cpp
+++ /dev/null
@@ -1,52 +0,0 @@
-#include "ibutton_scene_save_success.h"
-#include "../ibutton_app.h"
-#include <dolphin/dolphin.h>
-
-static void popup_callback(void* context) {
-    furi_assert(context);
-    iButtonApp* app = static_cast<iButtonApp*>(context);
-    iButtonEvent event;
-    event.type = iButtonEvent::Type::EventTypeBack;
-    app->get_view_manager()->send_event(&event);
-}
-
-void iButtonSceneSaveSuccess::on_enter(iButtonApp* app) {
-    iButtonAppViewManager* view_manager = app->get_view_manager();
-    Popup* popup = view_manager->get_popup();
-    DOLPHIN_DEED(DolphinDeedIbuttonSave);
-
-    popup_set_icon(popup, 32, 5, &I_DolphinNice_96x59);
-    popup_set_header(popup, "Saved!", 5, 7, AlignLeft, AlignTop);
-
-    popup_set_callback(popup, popup_callback);
-    popup_set_context(popup, app);
-    popup_set_timeout(popup, 1500);
-    popup_enable_timeout(popup);
-
-    view_manager->switch_to(iButtonAppViewManager::Type::iButtonAppViewPopup);
-}
-
-bool iButtonSceneSaveSuccess::on_event(iButtonApp* app, iButtonEvent* event) {
-    bool consumed = false;
-
-    if(event->type == iButtonEvent::Type::EventTypeBack) {
-        app->search_and_switch_to_previous_scene(
-            {iButtonApp::Scene::SceneReadKeyMenu,
-             iButtonApp::Scene::SceneSavedKeyMenu,
-             iButtonApp::Scene::SceneAddType});
-        consumed = true;
-    }
-
-    return consumed;
-}
-
-void iButtonSceneSaveSuccess::on_exit(iButtonApp* app) {
-    Popup* popup = app->get_view_manager()->get_popup();
-
-    popup_set_text(popup, NULL, 0, 0, AlignCenter, AlignTop);
-    popup_set_icon(popup, 0, 0, NULL);
-
-    popup_disable_timeout(popup);
-    popup_set_context(popup, NULL);
-    popup_set_callback(popup, NULL);
-}
\ No newline at end of file
diff --git a/applications/ibutton/scene/ibutton_scene_save_success.h b/applications/ibutton/scene/ibutton_scene_save_success.h
deleted file mode 100644
index 95742bda..00000000
--- a/applications/ibutton/scene/ibutton_scene_save_success.h
+++ /dev/null
@@ -1,9 +0,0 @@
-#pragma once
-#include "ibutton_scene_generic.h"
-
-class iButtonSceneSaveSuccess : public iButtonScene {
-public:
-    void on_enter(iButtonApp* app) final;
-    bool on_event(iButtonApp* app, iButtonEvent* event) final;
-    void on_exit(iButtonApp* app) final;
-};
\ No newline at end of file
diff --git a/applications/ibutton/scene/ibutton_scene_saved_key_menu.cpp b/applications/ibutton/scene/ibutton_scene_saved_key_menu.cpp
deleted file mode 100644
index d9d042d9..00000000
--- a/applications/ibutton/scene/ibutton_scene_saved_key_menu.cpp
+++ /dev/null
@@ -1,73 +0,0 @@
-#include "ibutton_scene_saved_key_menu.h"
-#include "../ibutton_app.h"
-#include <callback-connector.h>
-
-typedef enum {
-    SubmenuIndexEmulate,
-    SubmenuIndexWrite,
-    SubmenuIndexEdit,
-    SubmenuIndexDelete,
-    SubmenuIndexInfo,
-} SubmenuIndex;
-
-static void submenu_callback(void* context, uint32_t index) {
-    furi_assert(context);
-    iButtonApp* app = static_cast<iButtonApp*>(context);
-    iButtonEvent event;
-
-    event.type = iButtonEvent::Type::EventTypeMenuSelected;
-    event.payload.menu_index = index;
-
-    app->get_view_manager()->send_event(&event);
-}
-
-void iButtonSceneSavedKeyMenu::on_enter(iButtonApp* app) {
-    iButtonAppViewManager* view_manager = app->get_view_manager();
-    Submenu* submenu = view_manager->get_submenu();
-
-    submenu_add_item(submenu, "Emulate", SubmenuIndexEmulate, submenu_callback, app);
-    if(ibutton_key_get_type(app->get_key()) == iButtonKeyDS1990) {
-        submenu_add_item(submenu, "Write", SubmenuIndexWrite, submenu_callback, app);
-    }
-    submenu_add_item(submenu, "Edit", SubmenuIndexEdit, submenu_callback, app);
-    submenu_add_item(submenu, "Delete", SubmenuIndexDelete, submenu_callback, app);
-    submenu_add_item(submenu, "Info", SubmenuIndexInfo, submenu_callback, app);
-    submenu_set_selected_item(submenu, submenu_item_selected);
-
-    view_manager->switch_to(iButtonAppViewManager::Type::iButtonAppViewSubmenu);
-}
-
-bool iButtonSceneSavedKeyMenu::on_event(iButtonApp* app, iButtonEvent* event) {
-    bool consumed = false;
-
-    if(event->type == iButtonEvent::Type::EventTypeMenuSelected) {
-        submenu_item_selected = event->payload.menu_index;
-        switch(event->payload.menu_index) {
-        case SubmenuIndexWrite:
-            app->switch_to_next_scene(iButtonApp::Scene::SceneWrite);
-            break;
-        case SubmenuIndexEmulate:
-            app->switch_to_next_scene(iButtonApp::Scene::SceneEmulate);
-            break;
-        case SubmenuIndexEdit:
-            app->switch_to_next_scene(iButtonApp::Scene::SceneAddValue);
-            break;
-        case SubmenuIndexDelete:
-            app->switch_to_next_scene(iButtonApp::Scene::SceneDeleteConfirm);
-            break;
-        case SubmenuIndexInfo:
-            app->switch_to_next_scene(iButtonApp::Scene::SceneInfo);
-            break;
-        }
-        consumed = true;
-    }
-
-    return consumed;
-}
-
-void iButtonSceneSavedKeyMenu::on_exit(iButtonApp* app) {
-    iButtonAppViewManager* view = app->get_view_manager();
-    Submenu* submenu = view->get_submenu();
-
-    submenu_reset(submenu);
-}
diff --git a/applications/ibutton/scene/ibutton_scene_saved_key_menu.h b/applications/ibutton/scene/ibutton_scene_saved_key_menu.h
deleted file mode 100644
index 399ed1ce..00000000
--- a/applications/ibutton/scene/ibutton_scene_saved_key_menu.h
+++ /dev/null
@@ -1,12 +0,0 @@
-#pragma once
-#include "ibutton_scene_generic.h"
-
-class iButtonSceneSavedKeyMenu : public iButtonScene {
-public:
-    void on_enter(iButtonApp* app) final;
-    bool on_event(iButtonApp* app, iButtonEvent* event) final;
-    void on_exit(iButtonApp* app) final;
-
-private:
-    uint32_t submenu_item_selected = 0;
-};
\ No newline at end of file
diff --git a/applications/ibutton/scene/ibutton_scene_select_key.cpp b/applications/ibutton/scene/ibutton_scene_select_key.cpp
deleted file mode 100644
index 1f1ece35..00000000
--- a/applications/ibutton/scene/ibutton_scene_select_key.cpp
+++ /dev/null
@@ -1,18 +0,0 @@
-#include "ibutton_scene_select_key.h"
-#include "../ibutton_app.h"
-
-void iButtonSceneSelectKey::on_enter(iButtonApp* app) {
-    // Process file_select return
-    if(app->load_key()) {
-        app->switch_to_next_scene(iButtonApp::Scene::SceneSavedKeyMenu);
-    } else {
-        app->switch_to_previous_scene();
-    }
-}
-
-bool iButtonSceneSelectKey::on_event(iButtonApp* app, iButtonEvent* event) {
-    return false;
-}
-
-void iButtonSceneSelectKey::on_exit(iButtonApp* app) {
-}
diff --git a/applications/ibutton/scene/ibutton_scene_select_key.h b/applications/ibutton/scene/ibutton_scene_select_key.h
deleted file mode 100644
index 39e8d9a3..00000000
--- a/applications/ibutton/scene/ibutton_scene_select_key.h
+++ /dev/null
@@ -1,9 +0,0 @@
-#pragma once
-#include "ibutton_scene_generic.h"
-
-class iButtonSceneSelectKey : public iButtonScene {
-public:
-    void on_enter(iButtonApp* app) final;
-    bool on_event(iButtonApp* app, iButtonEvent* event) final;
-    void on_exit(iButtonApp* app) final;
-};
\ No newline at end of file
diff --git a/applications/ibutton/scene/ibutton_scene_start.cpp b/applications/ibutton/scene/ibutton_scene_start.cpp
deleted file mode 100644
index f7465459..00000000
--- a/applications/ibutton/scene/ibutton_scene_start.cpp
+++ /dev/null
@@ -1,60 +0,0 @@
-#include "ibutton_scene_start.h"
-#include "../ibutton_app.h"
-
-typedef enum {
-    SubmenuIndexRead,
-    SubmenuIndexSaved,
-    SubmenuIndexAdd,
-} SubmenuIndex;
-
-static void submenu_callback(void* context, uint32_t index) {
-    furi_assert(context);
-    iButtonApp* app = static_cast<iButtonApp*>(context);
-    iButtonEvent event;
-
-    event.type = iButtonEvent::Type::EventTypeMenuSelected;
-    event.payload.menu_index = index;
-
-    app->get_view_manager()->send_event(&event);
-}
-
-void iButtonSceneStart::on_enter(iButtonApp* app) {
-    iButtonAppViewManager* view_manager = app->get_view_manager();
-    Submenu* submenu = view_manager->get_submenu();
-
-    submenu_add_item(submenu, "Read", SubmenuIndexRead, submenu_callback, app);
-    submenu_add_item(submenu, "Saved", SubmenuIndexSaved, submenu_callback, app);
-    submenu_add_item(submenu, "Add Manually", SubmenuIndexAdd, submenu_callback, app);
-    submenu_set_selected_item(submenu, submenu_item_selected);
-
-    view_manager->switch_to(iButtonAppViewManager::Type::iButtonAppViewSubmenu);
-}
-
-bool iButtonSceneStart::on_event(iButtonApp* app, iButtonEvent* event) {
-    bool consumed = false;
-
-    if(event->type == iButtonEvent::Type::EventTypeMenuSelected) {
-        submenu_item_selected = event->payload.menu_index;
-        switch(event->payload.menu_index) {
-        case SubmenuIndexRead:
-            app->switch_to_next_scene(iButtonApp::Scene::SceneRead);
-            break;
-        case SubmenuIndexSaved:
-            app->switch_to_next_scene(iButtonApp::Scene::SceneSelectKey);
-            break;
-        case SubmenuIndexAdd:
-            app->switch_to_next_scene(iButtonApp::Scene::SceneAddType);
-            break;
-        }
-        consumed = true;
-    }
-
-    return consumed;
-}
-
-void iButtonSceneStart::on_exit(iButtonApp* app) {
-    iButtonAppViewManager* view = app->get_view_manager();
-    Submenu* submenu = view->get_submenu();
-
-    submenu_reset(submenu);
-}
diff --git a/applications/ibutton/scene/ibutton_scene_start.h b/applications/ibutton/scene/ibutton_scene_start.h
deleted file mode 100644
index be1ce79f..00000000
--- a/applications/ibutton/scene/ibutton_scene_start.h
+++ /dev/null
@@ -1,12 +0,0 @@
-#pragma once
-#include "ibutton_scene_generic.h"
-
-class iButtonSceneStart : public iButtonScene {
-public:
-    void on_enter(iButtonApp* app) final;
-    bool on_event(iButtonApp* app, iButtonEvent* event) final;
-    void on_exit(iButtonApp* app) final;
-
-private:
-    uint32_t submenu_item_selected = 0;
-};
\ No newline at end of file
diff --git a/applications/ibutton/scene/ibutton_scene_write.cpp b/applications/ibutton/scene/ibutton_scene_write.cpp
deleted file mode 100644
index 31da6dbe..00000000
--- a/applications/ibutton/scene/ibutton_scene_write.cpp
+++ /dev/null
@@ -1,111 +0,0 @@
-#include "ibutton_scene_write.h"
-#include "../ibutton_app.h"
-
-static void ibutton_worker_write_cb(void* context, iButtonWorkerWriteResult result) {
-    furi_assert(context);
-    iButtonApp* app = static_cast<iButtonApp*>(context);
-    iButtonEvent event;
-    event.type = iButtonEvent::Type::EventTypeWorkerWrite;
-    event.payload.worker_write_result = result;
-
-    app->get_view_manager()->send_event(&event);
-}
-
-void iButtonSceneWrite::on_enter(iButtonApp* app) {
-    iButtonAppViewManager* view_manager = app->get_view_manager();
-    Popup* popup = view_manager->get_popup();
-    iButtonKey* key = app->get_key();
-    iButtonWorker* worker = app->get_key_worker();
-    const uint8_t* key_data = ibutton_key_get_data_p(key);
-    const char* key_name = ibutton_key_get_name_p(key);
-    uint8_t line_count = 2;
-
-    // check that stored key has name
-    if(strcmp(key_name, "") != 0) {
-        app->set_text_store("writing\n%s", key_name);
-        line_count = 2;
-    } else {
-        // if not, show key data
-        switch(ibutton_key_get_type(key)) {
-        case iButtonKeyDS1990:
-            app->set_text_store(
-                "writing\n%02X %02X %02X %02X\n%02X %02X %02X %02X",
-                key_data[0],
-                key_data[1],
-                key_data[2],
-                key_data[3],
-                key_data[4],
-                key_data[5],
-                key_data[6],
-                key_data[7]);
-            line_count = 3;
-            break;
-        case iButtonKeyCyfral:
-            app->set_text_store("writing\n%02X %02X", key_data[0], key_data[1]);
-            line_count = 2;
-            break;
-        case iButtonKeyMetakom:
-            app->set_text_store(
-                "writing\n%02X %02X %02X %02X", key_data[0], key_data[1], key_data[2], key_data[3]);
-            line_count = 2;
-            break;
-        }
-    }
-
-    switch(line_count) {
-    case 3:
-        popup_set_header(popup, "iButton", 82, 18, AlignCenter, AlignBottom);
-        popup_set_text(popup, app->get_text_store(), 82, 22, AlignCenter, AlignTop);
-        break;
-
-    default:
-        popup_set_header(popup, "iButton", 82, 24, AlignCenter, AlignBottom);
-        popup_set_text(popup, app->get_text_store(), 82, 28, AlignCenter, AlignTop);
-        break;
-    }
-
-    popup_set_icon(popup, 2, 10, &I_iButtonKey_49x44);
-
-    view_manager->switch_to(iButtonAppViewManager::Type::iButtonAppViewPopup);
-
-    blink_yellow = false;
-    ibutton_worker_write_set_callback(worker, ibutton_worker_write_cb, app);
-    ibutton_worker_write_start(worker, key);
-}
-
-bool iButtonSceneWrite::on_event(iButtonApp* app, iButtonEvent* event) {
-    bool consumed = false;
-
-    if(event->type == iButtonEvent::Type::EventTypeWorkerWrite) {
-        consumed = true;
-
-        switch(event->payload.worker_write_result) {
-        case iButtonWorkerWriteOK:
-        case iButtonWorkerWriteSameKey:
-            app->switch_to_next_scene(iButtonApp::Scene::SceneWriteSuccess);
-            break;
-        case iButtonWorkerWriteNoDetect:
-            blink_yellow = false;
-            break;
-        case iButtonWorkerWriteCannotWrite:
-            blink_yellow = true;
-            break;
-        }
-    } else if(event->type == iButtonEvent::Type::EventTypeTick) {
-        if(blink_yellow) {
-            app->notify_yellow_blink();
-        } else {
-            app->notify_emulate();
-        }
-    }
-
-    return consumed;
-}
-
-void iButtonSceneWrite::on_exit(iButtonApp* app) {
-    Popup* popup = app->get_view_manager()->get_popup();
-    ibutton_worker_stop(app->get_key_worker());
-    popup_set_header(popup, NULL, 0, 0, AlignCenter, AlignBottom);
-    popup_set_text(popup, NULL, 0, 0, AlignCenter, AlignTop);
-    popup_set_icon(popup, 0, 0, NULL);
-}
\ No newline at end of file
diff --git a/applications/ibutton/scene/ibutton_scene_write.h b/applications/ibutton/scene/ibutton_scene_write.h
deleted file mode 100644
index bd99b377..00000000
--- a/applications/ibutton/scene/ibutton_scene_write.h
+++ /dev/null
@@ -1,12 +0,0 @@
-#pragma once
-#include "ibutton_scene_generic.h"
-
-class iButtonSceneWrite : public iButtonScene {
-public:
-    void on_enter(iButtonApp* app) final;
-    bool on_event(iButtonApp* app, iButtonEvent* event) final;
-    void on_exit(iButtonApp* app) final;
-
-private:
-    bool blink_yellow;
-};
\ No newline at end of file
diff --git a/applications/ibutton/scene/ibutton_scene_write_success.cpp b/applications/ibutton/scene/ibutton_scene_write_success.cpp
deleted file mode 100644
index 39734704..00000000
--- a/applications/ibutton/scene/ibutton_scene_write_success.cpp
+++ /dev/null
@@ -1,52 +0,0 @@
-#include "ibutton_scene_write_success.h"
-#include "../ibutton_app.h"
-
-static void popup_callback(void* context) {
-    furi_assert(context);
-    iButtonApp* app = static_cast<iButtonApp*>(context);
-    iButtonEvent event;
-    event.type = iButtonEvent::Type::EventTypeBack;
-    app->get_view_manager()->send_event(&event);
-    app->notify_green_off();
-}
-
-void iButtonSceneWriteSuccess::on_enter(iButtonApp* app) {
-    iButtonAppViewManager* view_manager = app->get_view_manager();
-    Popup* popup = view_manager->get_popup();
-
-    popup_set_icon(popup, 0, 12, &I_iButtonDolphinVerySuccess_108x52);
-    popup_set_text(popup, "Successfully written!", 40, 12, AlignLeft, AlignBottom);
-
-    popup_set_callback(popup, popup_callback);
-    popup_set_context(popup, app);
-    popup_set_timeout(popup, 1500);
-    popup_enable_timeout(popup);
-
-    view_manager->switch_to(iButtonAppViewManager::Type::iButtonAppViewPopup);
-
-    app->notify_success();
-    app->notify_green_on();
-}
-
-bool iButtonSceneWriteSuccess::on_event(iButtonApp* app, iButtonEvent* event) {
-    bool consumed = false;
-
-    if(event->type == iButtonEvent::Type::EventTypeBack) {
-        app->search_and_switch_to_previous_scene(
-            {iButtonApp::Scene::SceneReadKeyMenu, iButtonApp::Scene::SceneStart});
-        consumed = true;
-    }
-
-    return consumed;
-}
-
-void iButtonSceneWriteSuccess::on_exit(iButtonApp* app) {
-    Popup* popup = app->get_view_manager()->get_popup();
-
-    popup_set_text(popup, NULL, 0, 0, AlignCenter, AlignTop);
-    popup_set_icon(popup, 0, 0, NULL);
-
-    popup_disable_timeout(popup);
-    popup_set_context(popup, NULL);
-    popup_set_callback(popup, NULL);
-}
\ No newline at end of file
diff --git a/applications/ibutton/scene/ibutton_scene_write_success.h b/applications/ibutton/scene/ibutton_scene_write_success.h
deleted file mode 100644
index c6e76885..00000000
--- a/applications/ibutton/scene/ibutton_scene_write_success.h
+++ /dev/null
@@ -1,9 +0,0 @@
-#pragma once
-#include "ibutton_scene_generic.h"
-
-class iButtonSceneWriteSuccess : public iButtonScene {
-public:
-    void on_enter(iButtonApp* app) final;
-    bool on_event(iButtonApp* app, iButtonEvent* event) final;
-    void on_exit(iButtonApp* app) final;
-};
\ No newline at end of file
diff --git a/applications/ibutton/scenes/ibutton_scene.c b/applications/ibutton/scenes/ibutton_scene.c
new file mode 100644
index 00000000..c36a0eb5
--- /dev/null
+++ b/applications/ibutton/scenes/ibutton_scene.c
@@ -0,0 +1,30 @@
+#include "ibutton_scene.h"
+
+// Generate scene on_enter handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_enter,
+void (*const ibutton_on_enter_handlers[])(void*) = {
+#include "ibutton_scene_config.h"
+};
+#undef ADD_SCENE
+
+// Generate scene on_event handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_event,
+bool (*const ibutton_on_event_handlers[])(void* context, SceneManagerEvent event) = {
+#include "ibutton_scene_config.h"
+};
+#undef ADD_SCENE
+
+// Generate scene on_exit handlers array
+#define ADD_SCENE(prefix, name, id) prefix##_scene_##name##_on_exit,
+void (*const ibutton_on_exit_handlers[])(void* context) = {
+#include "ibutton_scene_config.h"
+};
+#undef ADD_SCENE
+
+// Initialize scene handlers configuration structure
+const SceneManagerHandlers ibutton_scene_handlers = {
+    .on_enter_handlers = ibutton_on_enter_handlers,
+    .on_event_handlers = ibutton_on_event_handlers,
+    .on_exit_handlers = ibutton_on_exit_handlers,
+    .scene_num = iButtonSceneNum,
+};
diff --git a/applications/ibutton/scenes/ibutton_scene.h b/applications/ibutton/scenes/ibutton_scene.h
new file mode 100644
index 00000000..60d2353e
--- /dev/null
+++ b/applications/ibutton/scenes/ibutton_scene.h
@@ -0,0 +1,29 @@
+#pragma once
+
+#include <gui/scene_manager.h>
+
+// Generate scene id and total number
+#define ADD_SCENE(prefix, name, id) iButtonScene##id,
+typedef enum {
+#include "ibutton_scene_config.h"
+    iButtonSceneNum,
+} iButtonScene;
+#undef ADD_SCENE
+
+extern const SceneManagerHandlers ibutton_scene_handlers;
+
+// Generate scene on_enter handlers declaration
+#define ADD_SCENE(prefix, name, id) void prefix##_scene_##name##_on_enter(void*);
+#include "ibutton_scene_config.h"
+#undef ADD_SCENE
+
+// Generate scene on_event handlers declaration
+#define ADD_SCENE(prefix, name, id) \
+    bool prefix##_scene_##name##_on_event(void* context, SceneManagerEvent event);
+#include "ibutton_scene_config.h"
+#undef ADD_SCENE
+
+// Generate scene on_exit handlers declaration
+#define ADD_SCENE(prefix, name, id) void prefix##_scene_##name##_on_exit(void* context);
+#include "ibutton_scene_config.h"
+#undef ADD_SCENE
diff --git a/applications/ibutton/scenes/ibutton_scene_add_type.c b/applications/ibutton/scenes/ibutton_scene_add_type.c
new file mode 100644
index 00000000..db129295
--- /dev/null
+++ b/applications/ibutton/scenes/ibutton_scene_add_type.c
@@ -0,0 +1,58 @@
+#include "../ibutton_i.h"
+
+enum SubmenuIndex {
+    SubmenuIndexCyfral,
+    SubmenuIndexDallas,
+    SubmenuIndexMetakom,
+};
+
+void ibutton_scene_add_type_submenu_callback(void* context, uint32_t index) {
+    iButton* ibutton = context;
+    view_dispatcher_send_custom_event(ibutton->view_dispatcher, index);
+}
+
+void ibutton_scene_add_type_on_enter(void* context) {
+    iButton* ibutton = context;
+    Submenu* submenu = ibutton->submenu;
+
+    submenu_add_item(
+        submenu, "Cyfral", SubmenuIndexCyfral, ibutton_scene_add_type_submenu_callback, ibutton);
+    submenu_add_item(
+        submenu, "Dallas", SubmenuIndexDallas, ibutton_scene_add_type_submenu_callback, ibutton);
+    submenu_add_item(
+        submenu, "Metakom", SubmenuIndexMetakom, ibutton_scene_add_type_submenu_callback, ibutton);
+
+    submenu_set_selected_item(submenu, SubmenuIndexCyfral);
+
+    view_dispatcher_switch_to_view(ibutton->view_dispatcher, iButtonViewSubmenu);
+}
+
+bool ibutton_scene_add_type_on_event(void* context, SceneManagerEvent event) {
+    iButton* ibutton = context;
+    iButtonKey* key = ibutton->key;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        consumed = true;
+        if(event.event == SubmenuIndexCyfral) {
+            ibutton_key_set_type(key, iButtonKeyCyfral);
+        } else if(event.event == SubmenuIndexDallas) {
+            ibutton_key_set_type(key, iButtonKeyDS1990);
+        } else if(event.event == SubmenuIndexMetakom) {
+            ibutton_key_set_type(key, iButtonKeyMetakom);
+        } else {
+            furi_crash("Unknown key type");
+        }
+
+        ibutton_key_set_name(key, "");
+        ibutton_key_clear_data(key);
+        scene_manager_next_scene(ibutton->scene_manager, iButtonSceneAddValue);
+    }
+
+    return consumed;
+}
+
+void ibutton_scene_add_type_on_exit(void* context) {
+    iButton* ibutton = context;
+    submenu_reset(ibutton->submenu);
+}
diff --git a/applications/ibutton/scenes/ibutton_scene_add_value.c b/applications/ibutton/scenes/ibutton_scene_add_value.c
new file mode 100644
index 00000000..b3ec11a5
--- /dev/null
+++ b/applications/ibutton/scenes/ibutton_scene_add_value.c
@@ -0,0 +1,57 @@
+#include "../ibutton_i.h"
+
+#include <dolphin/dolphin.h>
+
+void ibutton_scene_add_type_byte_input_callback(void* context) {
+    iButton* ibutton = context;
+    view_dispatcher_send_custom_event(ibutton->view_dispatcher, iButtonCustomEventByteEditResult);
+}
+
+void ibutton_scene_add_value_on_enter(void* context) {
+    iButton* ibutton = context;
+    iButtonKey* key = ibutton->key;
+    uint8_t* new_key_data = malloc(IBUTTON_KEY_DATA_SIZE);
+
+    scene_manager_set_scene_state(
+        ibutton->scene_manager, iButtonSceneAddValue, (uint32_t)new_key_data);
+    memcpy(new_key_data, ibutton_key_get_data_p(key), ibutton_key_get_data_size(key));
+
+    byte_input_set_result_callback(
+        ibutton->byte_input,
+        ibutton_scene_add_type_byte_input_callback,
+        NULL,
+        ibutton,
+        new_key_data,
+        ibutton_key_get_data_size(key));
+
+    byte_input_set_header_text(ibutton->byte_input, "Enter the key");
+    view_dispatcher_switch_to_view(ibutton->view_dispatcher, iButtonViewByteInput);
+}
+
+bool ibutton_scene_add_value_on_event(void* context, SceneManagerEvent event) {
+    iButton* ibutton = context;
+    uint8_t* new_key_data =
+        (uint8_t*)scene_manager_get_scene_state(ibutton->scene_manager, iButtonSceneAddValue);
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        consumed = true;
+        if(event.event == iButtonCustomEventByteEditResult) {
+            ibutton_key_set_data(ibutton->key, new_key_data, IBUTTON_KEY_DATA_SIZE);
+            DOLPHIN_DEED(DolphinDeedIbuttonAdd);
+            scene_manager_next_scene(ibutton->scene_manager, iButtonSceneSaveName);
+        }
+    }
+
+    return consumed;
+}
+
+void ibutton_scene_add_value_on_exit(void* context) {
+    iButton* ibutton = context;
+    uint8_t* new_key_data =
+        (uint8_t*)scene_manager_get_scene_state(ibutton->scene_manager, iButtonSceneAddValue);
+
+    byte_input_set_result_callback(ibutton->byte_input, NULL, NULL, NULL, NULL, 0);
+    byte_input_set_header_text(ibutton->byte_input, NULL);
+    free(new_key_data);
+}
diff --git a/applications/ibutton/scenes/ibutton_scene_config.h b/applications/ibutton/scenes/ibutton_scene_config.h
new file mode 100644
index 00000000..d30b43be
--- /dev/null
+++ b/applications/ibutton/scenes/ibutton_scene_config.h
@@ -0,0 +1,20 @@
+ADD_SCENE(ibutton, start, Start)
+ADD_SCENE(ibutton, emulate, Emulate)
+ADD_SCENE(ibutton, write, Write)
+ADD_SCENE(ibutton, write_success, WriteSuccess)
+ADD_SCENE(ibutton, info, Info)
+ADD_SCENE(ibutton, read, Read)
+ADD_SCENE(ibutton, read_key_menu, ReadKeyMenu)
+ADD_SCENE(ibutton, read_success, ReadSuccess)
+ADD_SCENE(ibutton, read_crc_error, ReadCRCError)
+ADD_SCENE(ibutton, read_not_key_error, ReadNotKeyError)
+ADD_SCENE(ibutton, select_key, SelectKey)
+ADD_SCENE(ibutton, add_type, AddType)
+ADD_SCENE(ibutton, add_value, AddValue)
+ADD_SCENE(ibutton, saved_key_menu, SavedKeyMenu)
+ADD_SCENE(ibutton, save_name, SaveName)
+ADD_SCENE(ibutton, save_success, SaveSuccess)
+ADD_SCENE(ibutton, delete_confirm, DeleteConfirm)
+ADD_SCENE(ibutton, delete_success, DeleteSuccess)
+ADD_SCENE(ibutton, retry_confirm, RetryConfirm)
+ADD_SCENE(ibutton, exit_confirm, ExitConfirm)
diff --git a/applications/ibutton/scenes/ibutton_scene_delete_confirm.c b/applications/ibutton/scenes/ibutton_scene_delete_confirm.c
new file mode 100644
index 00000000..73ea97cc
--- /dev/null
+++ b/applications/ibutton/scenes/ibutton_scene_delete_confirm.c
@@ -0,0 +1,91 @@
+#include "../ibutton_i.h"
+
+static void ibutton_scene_delete_confirm_widget_callback(
+    GuiButtonType result,
+    InputType type,
+    void* context) {
+    iButton* ibutton = context;
+    if(type == InputTypeShort) {
+        view_dispatcher_send_custom_event(ibutton->view_dispatcher, result);
+    }
+}
+
+void ibutton_scene_delete_confirm_on_enter(void* context) {
+    iButton* ibutton = context;
+    Widget* widget = ibutton->widget;
+    iButtonKey* key = ibutton->key;
+    const uint8_t* key_data = ibutton_key_get_data_p(key);
+
+    ibutton_text_store_set(ibutton, "\e#Delete %s?\e#", ibutton_key_get_name_p(key));
+    widget_add_text_box_element(
+        widget, 0, 0, 128, 27, AlignCenter, AlignCenter, ibutton->text_store, false);
+    widget_add_button_element(
+        widget, GuiButtonTypeLeft, "Cancel", ibutton_scene_delete_confirm_widget_callback, ibutton);
+    widget_add_button_element(
+        widget,
+        GuiButtonTypeRight,
+        "Delete",
+        ibutton_scene_delete_confirm_widget_callback,
+        ibutton);
+
+    switch(ibutton_key_get_type(key)) {
+    case iButtonKeyDS1990:
+        ibutton_text_store_set(
+            ibutton,
+            "%02X %02X %02X %02X %02X %02X %02X %02X",
+            key_data[0],
+            key_data[1],
+            key_data[2],
+            key_data[3],
+            key_data[4],
+            key_data[5],
+            key_data[6],
+            key_data[7]);
+        widget_add_string_element(
+            widget, 64, 45, AlignCenter, AlignBottom, FontSecondary, "Dallas");
+        break;
+
+    case iButtonKeyCyfral:
+        ibutton_text_store_set(ibutton, "%02X %02X", key_data[0], key_data[1]);
+        widget_add_string_element(
+            widget, 64, 45, AlignCenter, AlignBottom, FontSecondary, "Cyfral");
+        break;
+
+    case iButtonKeyMetakom:
+        ibutton_text_store_set(
+            ibutton, "%02X %02X %02X %02X", key_data[0], key_data[1], key_data[2], key_data[3]);
+        widget_add_string_element(
+            widget, 64, 45, AlignCenter, AlignBottom, FontSecondary, "Metakom");
+        break;
+    }
+    widget_add_string_element(
+        widget, 64, 33, AlignCenter, AlignBottom, FontSecondary, ibutton->text_store);
+
+    view_dispatcher_switch_to_view(ibutton->view_dispatcher, iButtonViewWidget);
+}
+
+bool ibutton_scene_delete_confirm_on_event(void* context, SceneManagerEvent event) {
+    iButton* ibutton = context;
+    SceneManager* scene_manager = ibutton->scene_manager;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        consumed = true;
+        if(event.event == GuiButtonTypeRight) {
+            if(ibutton_delete_key(ibutton)) {
+                scene_manager_next_scene(scene_manager, iButtonSceneDeleteSuccess);
+            }
+            //TODO: What if the key could not be deleted?
+        } else if(event.event == GuiButtonTypeLeft) {
+            scene_manager_previous_scene(scene_manager);
+        }
+    }
+
+    return consumed;
+}
+
+void ibutton_scene_delete_confirm_on_exit(void* context) {
+    iButton* ibutton = context;
+    ibutton_text_store_clear(ibutton);
+    widget_reset(ibutton->widget);
+}
diff --git a/applications/ibutton/scenes/ibutton_scene_delete_success.c b/applications/ibutton/scenes/ibutton_scene_delete_success.c
new file mode 100644
index 00000000..8b7d9dfc
--- /dev/null
+++ b/applications/ibutton/scenes/ibutton_scene_delete_success.c
@@ -0,0 +1,48 @@
+#include "../ibutton_i.h"
+
+static void ibutton_scene_delete_success_popup_callback(void* context) {
+    iButton* ibutton = context;
+    view_dispatcher_send_custom_event(ibutton->view_dispatcher, iButtonCustomEventBack);
+}
+
+void ibutton_scene_delete_success_on_enter(void* context) {
+    iButton* ibutton = context;
+    Popup* popup = ibutton->popup;
+
+    popup_set_icon(popup, 0, 2, &I_DolphinMafia_115x62);
+    popup_set_header(popup, "Deleted", 83, 19, AlignLeft, AlignBottom);
+
+    popup_set_callback(popup, ibutton_scene_delete_success_popup_callback);
+    popup_set_context(popup, ibutton);
+    popup_set_timeout(popup, 1500);
+    popup_enable_timeout(popup);
+
+    view_dispatcher_switch_to_view(ibutton->view_dispatcher, iButtonViewPopup);
+}
+
+bool ibutton_scene_delete_success_on_event(void* context, SceneManagerEvent event) {
+    iButton* ibutton = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        consumed = true;
+        if(event.event == iButtonCustomEventBack) {
+            scene_manager_search_and_switch_to_previous_scene(
+                ibutton->scene_manager, iButtonSceneSelectKey);
+        }
+    }
+
+    return consumed;
+}
+
+void ibutton_scene_delete_success_on_exit(void* context) {
+    iButton* ibutton = context;
+    Popup* popup = ibutton->popup;
+
+    popup_set_text(popup, NULL, 0, 0, AlignCenter, AlignTop);
+    popup_set_icon(popup, 0, 0, NULL);
+
+    popup_disable_timeout(popup);
+    popup_set_context(popup, NULL);
+    popup_set_callback(popup, NULL);
+}
diff --git a/applications/ibutton/scene/ibutton_scene_emulate.cpp b/applications/ibutton/scenes/ibutton_scene_emulate.c
similarity index 50%
rename from applications/ibutton/scene/ibutton_scene_emulate.cpp
rename to applications/ibutton/scenes/ibutton_scene_emulate.c
index da6021fe..8ffe73b6 100644
--- a/applications/ibutton/scene/ibutton_scene_emulate.cpp
+++ b/applications/ibutton/scenes/ibutton_scene_emulate.c
@@ -1,34 +1,35 @@
-#include "ibutton_scene_emulate.h"
-#include "../ibutton_app.h"
+#include "../ibutton_i.h"
 #include <dolphin/dolphin.h>
 
-static void emulate_callback(void* context, bool emulated) {
-    furi_assert(context);
+static void ibutton_scene_emulate_callback(void* context, bool emulated) {
+    iButton* ibutton = context;
     if(emulated) {
-        iButtonApp* app = static_cast<iButtonApp*>(context);
-        iButtonEvent event = {.type = iButtonEvent::Type::EventTypeWorkerEmulated};
-        app->get_view_manager()->send_event(&event);
+        view_dispatcher_send_custom_event(
+            ibutton->view_dispatcher, iButtonCustomEventWorkerEmulated);
     }
 }
 
-void iButtonSceneEmulate::on_enter(iButtonApp* app) {
-    iButtonAppViewManager* view_manager = app->get_view_manager();
-    Popup* popup = view_manager->get_popup();
-    iButtonKey* key = app->get_key();
+void ibutton_scene_emulate_on_enter(void* context) {
+    iButton* ibutton = context;
+    Popup* popup = ibutton->popup;
+    iButtonKey* key = ibutton->key;
+
     const uint8_t* key_data = ibutton_key_get_data_p(key);
     const char* key_name = ibutton_key_get_name_p(key);
+
     uint8_t line_count = 2;
     DOLPHIN_DEED(DolphinDeedIbuttonEmulate);
 
     // check that stored key has name
     if(strcmp(key_name, "") != 0) {
-        app->set_text_store("emulating\n%s", key_name);
+        ibutton_text_store_set(ibutton, "emulating\n%s", key_name);
         line_count = 2;
     } else {
         // if not, show key data
         switch(ibutton_key_get_type(key)) {
         case iButtonKeyDS1990:
-            app->set_text_store(
+            ibutton_text_store_set(
+                ibutton,
                 "emulating\n%02X %02X %02X %02X\n%02X %02X %02X %02X",
                 key_data[0],
                 key_data[1],
@@ -41,11 +42,12 @@ void iButtonSceneEmulate::on_enter(iButtonApp* app) {
             line_count = 3;
             break;
         case iButtonKeyCyfral:
-            app->set_text_store("emulating\n%02X %02X", key_data[0], key_data[1]);
+            ibutton_text_store_set(ibutton, "emulating\n%02X %02X", key_data[0], key_data[1]);
             line_count = 2;
             break;
         case iButtonKeyMetakom:
-            app->set_text_store(
+            ibutton_text_store_set(
+                ibutton,
                 "emulating\n%02X %02X %02X %02X",
                 key_data[0],
                 key_data[1],
@@ -59,40 +61,45 @@ void iButtonSceneEmulate::on_enter(iButtonApp* app) {
     switch(line_count) {
     case 3:
         popup_set_header(popup, "iButton", 82, 18, AlignCenter, AlignBottom);
-        popup_set_text(popup, app->get_text_store(), 82, 22, AlignCenter, AlignTop);
+        popup_set_text(popup, ibutton->text_store, 82, 22, AlignCenter, AlignTop);
         break;
 
     default:
         popup_set_header(popup, "iButton", 82, 24, AlignCenter, AlignBottom);
-        popup_set_text(popup, app->get_text_store(), 82, 28, AlignCenter, AlignTop);
+        popup_set_text(popup, ibutton->text_store, 82, 28, AlignCenter, AlignTop);
         break;
     }
 
     popup_set_icon(popup, 2, 10, &I_iButtonKey_49x44);
 
-    view_manager->switch_to(iButtonAppViewManager::Type::iButtonAppViewPopup);
+    view_dispatcher_switch_to_view(ibutton->view_dispatcher, iButtonViewPopup);
 
-    ibutton_worker_emulate_set_callback(app->get_key_worker(), emulate_callback, app);
-    ibutton_worker_emulate_start(app->get_key_worker(), key);
+    ibutton_worker_emulate_set_callback(
+        ibutton->key_worker, ibutton_scene_emulate_callback, ibutton);
+    ibutton_worker_emulate_start(ibutton->key_worker, key);
 }
 
-bool iButtonSceneEmulate::on_event(iButtonApp* app, iButtonEvent* event) {
+bool ibutton_scene_emulate_on_event(void* context, SceneManagerEvent event) {
+    iButton* ibutton = context;
     bool consumed = false;
 
-    if(event->type == iButtonEvent::Type::EventTypeWorkerEmulated) {
-        app->notify_yellow_blink();
+    if(event.type == SceneManagerEventTypeTick) {
         consumed = true;
-    } else if(event->type == iButtonEvent::Type::EventTypeTick) {
-        app->notify_emulate();
+        ibutton_notification_message(ibutton, iButtonNotificationMessageEmulate);
+    } else if(event.type == SceneManagerEventTypeCustom) {
         consumed = true;
+        if(event.event == iButtonCustomEventWorkerEmulated) {
+            ibutton_notification_message(ibutton, iButtonNotificationMessageYellowBlink);
+        }
     }
 
     return consumed;
 }
 
-void iButtonSceneEmulate::on_exit(iButtonApp* app) {
-    Popup* popup = app->get_view_manager()->get_popup();
-    ibutton_worker_stop(app->get_key_worker());
+void ibutton_scene_emulate_on_exit(void* context) {
+    iButton* ibutton = context;
+    Popup* popup = ibutton->popup;
+    ibutton_worker_stop(ibutton->key_worker);
     popup_set_header(popup, NULL, 0, 0, AlignCenter, AlignBottom);
     popup_set_text(popup, NULL, 0, 0, AlignCenter, AlignTop);
     popup_set_icon(popup, 0, 0, NULL);
diff --git a/applications/ibutton/scenes/ibutton_scene_exit_confirm.c b/applications/ibutton/scenes/ibutton_scene_exit_confirm.c
new file mode 100644
index 00000000..abd171f6
--- /dev/null
+++ b/applications/ibutton/scenes/ibutton_scene_exit_confirm.c
@@ -0,0 +1,51 @@
+#include "../ibutton_i.h"
+
+static void ibutton_scene_exit_confirm_widget_callback(
+    GuiButtonType result,
+    InputType type,
+    void* context) {
+    iButton* ibutton = context;
+    if(type == InputTypeShort) {
+        view_dispatcher_send_custom_event(ibutton->view_dispatcher, result);
+    }
+}
+
+void ibutton_scene_exit_confirm_on_enter(void* context) {
+    iButton* ibutton = context;
+    Widget* widget = ibutton->widget;
+
+    widget_add_button_element(
+        widget, GuiButtonTypeLeft, "Exit", ibutton_scene_exit_confirm_widget_callback, ibutton);
+    widget_add_button_element(
+        widget, GuiButtonTypeRight, "Stay", ibutton_scene_exit_confirm_widget_callback, ibutton);
+    widget_add_string_element(
+        widget, 64, 19, AlignCenter, AlignBottom, FontPrimary, "Exit to iButton menu");
+    widget_add_string_element(
+        widget, 64, 29, AlignCenter, AlignBottom, FontSecondary, "All unsaved data will be lost");
+
+    view_dispatcher_switch_to_view(ibutton->view_dispatcher, iButtonViewWidget);
+}
+
+bool ibutton_scene_exit_confirm_on_event(void* context, SceneManagerEvent event) {
+    iButton* ibutton = context;
+    SceneManager* scene_manager = ibutton->scene_manager;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeBack) {
+        consumed = true; // Ignore Back button presses
+    } else if(event.type == SceneManagerEventTypeCustom) {
+        consumed = true;
+        if(event.event == GuiButtonTypeLeft) {
+            scene_manager_search_and_switch_to_previous_scene(scene_manager, iButtonSceneStart);
+        } else if(event.event == GuiButtonTypeRight) {
+            scene_manager_previous_scene(scene_manager);
+        }
+    }
+
+    return consumed;
+}
+
+void ibutton_scene_exit_confirm_on_exit(void* context) {
+    iButton* ibutton = context;
+    widget_reset(ibutton->widget);
+}
diff --git a/applications/ibutton/scenes/ibutton_scene_info.c b/applications/ibutton/scenes/ibutton_scene_info.c
new file mode 100644
index 00000000..5b0af1d8
--- /dev/null
+++ b/applications/ibutton/scenes/ibutton_scene_info.c
@@ -0,0 +1,61 @@
+#include "../ibutton_i.h"
+
+void ibutton_scene_info_on_enter(void* context) {
+    iButton* ibutton = context;
+    Widget* widget = ibutton->widget;
+    iButtonKey* key = ibutton->key;
+
+    const uint8_t* key_data = ibutton_key_get_data_p(key);
+
+    ibutton_text_store_set(ibutton, "%s", ibutton_key_get_name_p(key));
+    widget_add_text_box_element(
+        widget, 0, 0, 128, 28, AlignCenter, AlignCenter, ibutton->text_store, false);
+
+    switch(ibutton_key_get_type(key)) {
+    case iButtonKeyDS1990:
+        ibutton_text_store_set(
+            ibutton,
+            "%02X %02X %02X %02X %02X %02X %02X %02X",
+            key_data[0],
+            key_data[1],
+            key_data[2],
+            key_data[3],
+            key_data[4],
+            key_data[5],
+            key_data[6],
+            key_data[7]);
+        widget_add_string_element(
+            widget, 64, 51, AlignCenter, AlignBottom, FontSecondary, "Dallas");
+        break;
+
+    case iButtonKeyMetakom:
+        ibutton_text_store_set(
+            ibutton, "%02X %02X %02X %02X", key_data[0], key_data[1], key_data[2], key_data[3]);
+        widget_add_string_element(
+            widget, 64, 51, AlignCenter, AlignBottom, FontSecondary, "Metakom");
+        break;
+
+    case iButtonKeyCyfral:
+        ibutton_text_store_set(ibutton, "%02X %02X", key_data[0], key_data[1]);
+        widget_add_string_element(
+            widget, 64, 51, AlignCenter, AlignBottom, FontSecondary, "Cyfral");
+        break;
+    }
+
+    widget_add_string_element(
+        widget, 64, 35, AlignCenter, AlignBottom, FontPrimary, ibutton->text_store);
+
+    view_dispatcher_switch_to_view(ibutton->view_dispatcher, iButtonViewWidget);
+}
+
+bool ibutton_scene_info_on_event(void* context, SceneManagerEvent event) {
+    UNUSED(context);
+    UNUSED(event);
+    return false;
+}
+
+void ibutton_scene_info_on_exit(void* context) {
+    iButton* ibutton = context;
+    ibutton_text_store_clear(ibutton);
+    widget_reset(ibutton->widget);
+}
diff --git a/applications/ibutton/scenes/ibutton_scene_read.c b/applications/ibutton/scenes/ibutton_scene_read.c
new file mode 100644
index 00000000..a25f27e6
--- /dev/null
+++ b/applications/ibutton/scenes/ibutton_scene_read.c
@@ -0,0 +1,72 @@
+#include "../ibutton_i.h"
+#include <dolphin/dolphin.h>
+
+static void ibutton_scene_read_callback(void* context) {
+    iButton* ibutton = context;
+    view_dispatcher_send_custom_event(ibutton->view_dispatcher, iButtonCustomEventWorkerRead);
+}
+
+void ibutton_scene_read_on_enter(void* context) {
+    iButton* ibutton = context;
+    Popup* popup = ibutton->popup;
+    iButtonKey* key = ibutton->key;
+    iButtonWorker* worker = ibutton->key_worker;
+    DOLPHIN_DEED(DolphinDeedIbuttonRead);
+
+    popup_set_header(popup, "iButton", 95, 26, AlignCenter, AlignBottom);
+    popup_set_text(popup, "waiting\nfor key ...", 95, 30, AlignCenter, AlignTop);
+    popup_set_icon(popup, 0, 5, &I_DolphinWait_61x59);
+
+    view_dispatcher_switch_to_view(ibutton->view_dispatcher, iButtonViewPopup);
+    ibutton_key_set_name(key, "");
+
+    ibutton_worker_read_set_callback(worker, ibutton_scene_read_callback, ibutton);
+    ibutton_worker_read_start(worker, key);
+}
+
+bool ibutton_scene_read_on_event(void* context, SceneManagerEvent event) {
+    iButton* ibutton = context;
+    SceneManager* scene_manager = ibutton->scene_manager;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeTick) {
+        consumed = true;
+        ibutton_notification_message(ibutton, iButtonNotificationMessageRead);
+    } else if(event.type == SceneManagerEventTypeCustom) {
+        consumed = true;
+        if(event.event == iButtonCustomEventWorkerRead) {
+            bool success = false;
+            iButtonKey* key = ibutton->key;
+
+            if(ibutton_key_get_type(key) == iButtonKeyDS1990) {
+                if(!ibutton_key_dallas_crc_is_valid(key)) {
+                    scene_manager_next_scene(scene_manager, iButtonSceneReadCRCError);
+                } else if(!ibutton_key_dallas_is_1990_key(key)) {
+                    scene_manager_next_scene(scene_manager, iButtonSceneReadNotKeyError);
+                } else {
+                    success = true;
+                }
+            } else {
+                success = true;
+            }
+
+            if(success) {
+                ibutton_notification_message(ibutton, iButtonNotificationMessageSuccess);
+                ibutton_notification_message(ibutton, iButtonNotificationMessageGreenOn);
+                DOLPHIN_DEED(DolphinDeedIbuttonReadSuccess);
+                scene_manager_next_scene(scene_manager, iButtonSceneReadSuccess);
+            }
+        }
+    }
+
+    return consumed;
+}
+
+void ibutton_scene_read_on_exit(void* context) {
+    iButton* ibutton = context;
+    Popup* popup = ibutton->popup;
+    ibutton_worker_stop(ibutton->key_worker);
+    popup_set_header(popup, NULL, 0, 0, AlignCenter, AlignBottom);
+    popup_set_text(popup, NULL, 0, 0, AlignCenter, AlignTop);
+    popup_set_icon(popup, 0, 0, NULL);
+}
diff --git a/applications/ibutton/scenes/ibutton_scene_read_crc_error.c b/applications/ibutton/scenes/ibutton_scene_read_crc_error.c
new file mode 100644
index 00000000..4df96d64
--- /dev/null
+++ b/applications/ibutton/scenes/ibutton_scene_read_crc_error.c
@@ -0,0 +1,71 @@
+#include "../ibutton_i.h"
+#include <one_wire/maxim_crc.h>
+
+static void ibutton_scene_read_crc_error_dialog_ex_callback(DialogExResult result, void* context) {
+    iButton* ibutton = context;
+    view_dispatcher_send_custom_event(ibutton->view_dispatcher, result);
+}
+
+void ibutton_scene_read_crc_error_on_enter(void* context) {
+    iButton* ibutton = context;
+    DialogEx* dialog_ex = ibutton->dialog_ex;
+    iButtonKey* key = ibutton->key;
+    const uint8_t* key_data = ibutton_key_get_data_p(key);
+
+    ibutton_text_store_set(
+        ibutton,
+        "%02X %02X %02X %02X %02X %02X %02X %02X\nExpected CRC: %X",
+        key_data[0],
+        key_data[1],
+        key_data[2],
+        key_data[3],
+        key_data[4],
+        key_data[5],
+        key_data[6],
+        key_data[7],
+        maxim_crc8(key_data, 7, MAXIM_CRC8_INIT));
+
+    dialog_ex_set_header(dialog_ex, "CRC ERROR", 64, 10, AlignCenter, AlignCenter);
+    dialog_ex_set_text(dialog_ex, ibutton->text_store, 64, 19, AlignCenter, AlignTop);
+    dialog_ex_set_left_button_text(dialog_ex, "Retry");
+    dialog_ex_set_right_button_text(dialog_ex, "More");
+    dialog_ex_set_result_callback(dialog_ex, ibutton_scene_read_crc_error_dialog_ex_callback);
+    dialog_ex_set_context(dialog_ex, ibutton);
+
+    view_dispatcher_switch_to_view(ibutton->view_dispatcher, iButtonViewDialogEx);
+
+    ibutton_notification_message(ibutton, iButtonNotificationMessageError);
+    ibutton_notification_message(ibutton, iButtonNotificationMessageRedOn);
+}
+
+bool ibutton_scene_read_crc_error_on_event(void* context, SceneManagerEvent event) {
+    iButton* ibutton = context;
+    SceneManager* scene_manager = ibutton->scene_manager;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        consumed = true;
+        if(event.event == DialogExResultRight) {
+            scene_manager_next_scene(scene_manager, iButtonSceneReadKeyMenu);
+        } else if(event.event == DialogExResultLeft) {
+            scene_manager_previous_scene(scene_manager);
+        }
+    }
+
+    return consumed;
+}
+
+void ibutton_scene_read_crc_error_on_exit(void* context) {
+    iButton* ibutton = context;
+    DialogEx* dialog_ex = ibutton->dialog_ex;
+
+    ibutton_text_store_clear(ibutton);
+
+    dialog_ex_set_header(dialog_ex, NULL, 0, 0, AlignCenter, AlignCenter);
+    dialog_ex_set_text(dialog_ex, NULL, 0, 0, AlignCenter, AlignTop);
+    dialog_ex_set_left_button_text(dialog_ex, NULL);
+    dialog_ex_set_result_callback(dialog_ex, NULL);
+    dialog_ex_set_context(dialog_ex, NULL);
+
+    ibutton_notification_message(ibutton, iButtonNotificationMessageRedOff);
+}
diff --git a/applications/ibutton/scenes/ibutton_scene_read_key_menu.c b/applications/ibutton/scenes/ibutton_scene_read_key_menu.c
new file mode 100644
index 00000000..7d479a46
--- /dev/null
+++ b/applications/ibutton/scenes/ibutton_scene_read_key_menu.c
@@ -0,0 +1,61 @@
+#include "../ibutton_i.h"
+
+typedef enum {
+    SubmenuIndexSave,
+    SubmenuIndexEmulate,
+    SubmenuIndexWrite,
+} SubmenuIndex;
+
+void ibutton_scene_read_key_menu_submenu_callback(void* context, uint32_t index) {
+    iButton* ibutton = context;
+    view_dispatcher_send_custom_event(ibutton->view_dispatcher, index);
+}
+
+void ibutton_scene_read_key_menu_on_enter(void* context) {
+    iButton* ibutton = context;
+    Submenu* submenu = ibutton->submenu;
+
+    submenu_add_item(
+        submenu, "Save", SubmenuIndexSave, ibutton_scene_read_key_menu_submenu_callback, ibutton);
+    submenu_add_item(
+        submenu,
+        "Emulate",
+        SubmenuIndexEmulate,
+        ibutton_scene_read_key_menu_submenu_callback,
+        ibutton);
+    if(ibutton_key_get_type(ibutton->key) == iButtonKeyDS1990) {
+        submenu_add_item(
+            submenu,
+            "Write",
+            SubmenuIndexWrite,
+            ibutton_scene_read_key_menu_submenu_callback,
+            ibutton);
+    }
+
+    submenu_set_selected_item(submenu, SubmenuIndexSave);
+
+    view_dispatcher_switch_to_view(ibutton->view_dispatcher, iButtonViewSubmenu);
+}
+
+bool ibutton_scene_read_key_menu_on_event(void* context, SceneManagerEvent event) {
+    iButton* ibutton = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        consumed = true;
+        if(event.event == SubmenuIndexSave) {
+            scene_manager_next_scene(ibutton->scene_manager, iButtonSceneSaveName);
+        } else if(event.event == SubmenuIndexEmulate) {
+            scene_manager_next_scene(ibutton->scene_manager, iButtonSceneEmulate);
+        } else if(event.event == SubmenuIndexWrite) {
+            scene_manager_next_scene(ibutton->scene_manager, iButtonSceneWrite);
+        }
+    }
+
+    return consumed;
+}
+
+void ibutton_scene_read_key_menu_on_exit(void* context) {
+    iButton* ibutton = context;
+    submenu_reset(ibutton->submenu);
+}
diff --git a/applications/ibutton/scenes/ibutton_scene_read_not_key_error.c b/applications/ibutton/scenes/ibutton_scene_read_not_key_error.c
new file mode 100644
index 00000000..76f14dae
--- /dev/null
+++ b/applications/ibutton/scenes/ibutton_scene_read_not_key_error.c
@@ -0,0 +1,72 @@
+#include "../ibutton_i.h"
+#include <one_wire/maxim_crc.h>
+
+static void
+    ibutton_scene_read_not_key_error_dialog_ex_callback(DialogExResult result, void* context) {
+    iButton* ibutton = context;
+    view_dispatcher_send_custom_event(ibutton->view_dispatcher, result);
+}
+
+void ibutton_scene_read_not_key_error_on_enter(void* context) {
+    iButton* ibutton = context;
+    DialogEx* dialog_ex = ibutton->dialog_ex;
+    iButtonKey* key = ibutton->key;
+    const uint8_t* key_data = ibutton_key_get_data_p(key);
+
+    ibutton_text_store_set(
+        ibutton,
+        "THIS IS NOT A KEY\n%02X %02X %02X %02X %02X %02X %02X %02X",
+        key_data[0],
+        key_data[1],
+        key_data[2],
+        key_data[3],
+        key_data[4],
+        key_data[5],
+        key_data[6],
+        key_data[7],
+        maxim_crc8(key_data, 7, MAXIM_CRC8_INIT));
+
+    dialog_ex_set_header(dialog_ex, "CRC ERROR", 64, 10, AlignCenter, AlignCenter);
+    dialog_ex_set_text(dialog_ex, ibutton->text_store, 64, 19, AlignCenter, AlignTop);
+    dialog_ex_set_left_button_text(dialog_ex, "Retry");
+    dialog_ex_set_right_button_text(dialog_ex, "More");
+    dialog_ex_set_result_callback(dialog_ex, ibutton_scene_read_not_key_error_dialog_ex_callback);
+    dialog_ex_set_context(dialog_ex, ibutton);
+
+    view_dispatcher_switch_to_view(ibutton->view_dispatcher, iButtonViewDialogEx);
+
+    ibutton_notification_message(ibutton, iButtonNotificationMessageError);
+    ibutton_notification_message(ibutton, iButtonNotificationMessageRedOn);
+}
+
+bool ibutton_scene_read_not_key_error_on_event(void* context, SceneManagerEvent event) {
+    iButton* ibutton = context;
+    SceneManager* scene_manager = ibutton->scene_manager;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        consumed = true;
+        if(event.event == DialogExResultRight) {
+            scene_manager_next_scene(scene_manager, iButtonSceneReadKeyMenu);
+        } else if(event.event == DialogExResultLeft) {
+            scene_manager_previous_scene(scene_manager);
+        }
+    }
+
+    return consumed;
+}
+
+void ibutton_scene_read_not_key_error_on_exit(void* context) {
+    iButton* ibutton = context;
+    DialogEx* dialog_ex = ibutton->dialog_ex;
+
+    ibutton_text_store_clear(ibutton);
+
+    dialog_ex_set_header(dialog_ex, NULL, 0, 0, AlignCenter, AlignCenter);
+    dialog_ex_set_text(dialog_ex, NULL, 0, 0, AlignCenter, AlignTop);
+    dialog_ex_set_left_button_text(dialog_ex, NULL);
+    dialog_ex_set_result_callback(dialog_ex, NULL);
+    dialog_ex_set_context(dialog_ex, NULL);
+
+    ibutton_notification_message(ibutton, iButtonNotificationMessageRedOff);
+}
diff --git a/applications/ibutton/scenes/ibutton_scene_read_success.c b/applications/ibutton/scenes/ibutton_scene_read_success.c
new file mode 100644
index 00000000..c3a13478
--- /dev/null
+++ b/applications/ibutton/scenes/ibutton_scene_read_success.c
@@ -0,0 +1,87 @@
+#include "../ibutton_i.h"
+#include <dolphin/dolphin.h>
+
+static void ibutton_scene_read_success_dialog_ex_callback(DialogExResult result, void* context) {
+    iButton* ibutton = context;
+    view_dispatcher_send_custom_event(ibutton->view_dispatcher, result);
+}
+
+void ibutton_scene_read_success_on_enter(void* context) {
+    iButton* ibutton = context;
+    DialogEx* dialog_ex = ibutton->dialog_ex;
+    iButtonKey* key = ibutton->key;
+    const uint8_t* key_data = ibutton_key_get_data_p(key);
+
+    switch(ibutton_key_get_type(key)) {
+    case iButtonKeyDS1990:
+        ibutton_text_store_set(
+            ibutton,
+            "Dallas\n%02X %02X %02X %02X\n%02X %02X %02X %02X",
+            key_data[0],
+            key_data[1],
+            key_data[2],
+            key_data[3],
+            key_data[4],
+            key_data[5],
+            key_data[6],
+            key_data[7]);
+        break;
+    case iButtonKeyCyfral:
+        ibutton_text_store_set(ibutton, "Cyfral\n%02X %02X", key_data[0], key_data[1]);
+        break;
+    case iButtonKeyMetakom:
+        ibutton_text_store_set(
+            ibutton,
+            "Metakom\n%02X %02X %02X %02X",
+            key_data[0],
+            key_data[1],
+            key_data[2],
+            key_data[3]);
+        break;
+    }
+
+    dialog_ex_set_text(dialog_ex, ibutton->text_store, 95, 30, AlignCenter, AlignCenter);
+    dialog_ex_set_left_button_text(dialog_ex, "Retry");
+    dialog_ex_set_right_button_text(dialog_ex, "More");
+    dialog_ex_set_icon(dialog_ex, 0, 1, &I_DolphinReadingSuccess_59x63);
+    dialog_ex_set_result_callback(dialog_ex, ibutton_scene_read_success_dialog_ex_callback);
+    dialog_ex_set_context(dialog_ex, ibutton);
+
+    view_dispatcher_switch_to_view(ibutton->view_dispatcher, iButtonViewDialogEx);
+}
+
+bool ibutton_scene_read_success_on_event(void* context, SceneManagerEvent event) {
+    iButton* ibutton = context;
+    SceneManager* scene_manager = ibutton->scene_manager;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeBack) {
+        consumed = true;
+        scene_manager_next_scene(scene_manager, iButtonSceneExitConfirm);
+    } else if(event.type == SceneManagerEventTypeCustom) {
+        consumed = true;
+        if(event.event == DialogExResultRight) {
+            scene_manager_next_scene(scene_manager, iButtonSceneReadKeyMenu);
+        } else if(event.event == DialogExResultLeft) {
+            scene_manager_next_scene(scene_manager, iButtonSceneRetryConfirm);
+        }
+    }
+
+    return consumed;
+}
+
+void ibutton_scene_read_success_on_exit(void* context) {
+    iButton* ibutton = context;
+    DialogEx* dialog_ex = ibutton->dialog_ex;
+
+    ibutton_text_store_clear(ibutton);
+
+    dialog_ex_set_text(dialog_ex, NULL, 0, 0, AlignCenter, AlignTop);
+    dialog_ex_set_left_button_text(dialog_ex, NULL);
+    dialog_ex_set_right_button_text(dialog_ex, NULL);
+    dialog_ex_set_result_callback(dialog_ex, NULL);
+    dialog_ex_set_context(dialog_ex, NULL);
+    dialog_ex_set_icon(dialog_ex, 0, 0, NULL);
+
+    ibutton_notification_message(ibutton, iButtonNotificationMessageGreenOff);
+}
diff --git a/applications/ibutton/scenes/ibutton_scene_retry_confirm.c b/applications/ibutton/scenes/ibutton_scene_retry_confirm.c
new file mode 100644
index 00000000..d2778ac1
--- /dev/null
+++ b/applications/ibutton/scenes/ibutton_scene_retry_confirm.c
@@ -0,0 +1,51 @@
+#include "../ibutton_i.h"
+
+static void ibutton_scene_retry_confirm_widget_callback(
+    GuiButtonType result,
+    InputType type,
+    void* context) {
+    iButton* ibutton = context;
+    if(type == InputTypeShort) {
+        view_dispatcher_send_custom_event(ibutton->view_dispatcher, result);
+    }
+}
+
+void ibutton_scene_retry_confirm_on_enter(void* context) {
+    iButton* ibutton = context;
+    Widget* widget = ibutton->widget;
+
+    widget_add_button_element(
+        widget, GuiButtonTypeLeft, "Exit", ibutton_scene_retry_confirm_widget_callback, ibutton);
+    widget_add_button_element(
+        widget, GuiButtonTypeRight, "Stay", ibutton_scene_retry_confirm_widget_callback, ibutton);
+    widget_add_string_element(
+        widget, 64, 19, AlignCenter, AlignBottom, FontPrimary, "Return to reading?");
+    widget_add_string_element(
+        widget, 64, 29, AlignCenter, AlignBottom, FontSecondary, "All unsaved data will be lost");
+
+    view_dispatcher_switch_to_view(ibutton->view_dispatcher, iButtonViewWidget);
+}
+
+bool ibutton_scene_retry_confirm_on_event(void* context, SceneManagerEvent event) {
+    iButton* ibutton = context;
+    SceneManager* scene_manager = ibutton->scene_manager;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeBack) {
+        consumed = true; // Ignore Back button presses
+    } else if(event.type == SceneManagerEventTypeCustom) {
+        consumed = true;
+        if(event.event == GuiButtonTypeLeft) {
+            scene_manager_search_and_switch_to_previous_scene(scene_manager, iButtonSceneRead);
+        } else if(event.event == GuiButtonTypeRight) {
+            scene_manager_previous_scene(scene_manager);
+        }
+    }
+
+    return consumed;
+}
+
+void ibutton_scene_retry_confirm_on_exit(void* context) {
+    iButton* ibutton = context;
+    widget_reset(ibutton->widget);
+}
diff --git a/applications/ibutton/scenes/ibutton_scene_save_name.c b/applications/ibutton/scenes/ibutton_scene_save_name.c
new file mode 100644
index 00000000..b1baf6af
--- /dev/null
+++ b/applications/ibutton/scenes/ibutton_scene_save_name.c
@@ -0,0 +1,68 @@
+#include "../ibutton_i.h"
+#include <lib/toolbox/random_name.h>
+
+static void ibutton_scene_save_name_text_input_callback(void* context) {
+    iButton* ibutton = context;
+    view_dispatcher_send_custom_event(ibutton->view_dispatcher, iButtonCustomEventTextEditResult);
+}
+
+void ibutton_scene_save_name_on_enter(void* context) {
+    iButton* ibutton = context;
+    TextInput* text_input = ibutton->text_input;
+
+    const char* key_name = ibutton_key_get_name_p(ibutton->key);
+    const bool key_name_is_empty = !strcmp(key_name, "");
+
+    if(key_name_is_empty) {
+        set_random_name(ibutton->text_store, IBUTTON_TEXT_STORE_SIZE);
+    } else {
+        ibutton_text_store_set(ibutton, "%s", key_name);
+    }
+
+    text_input_set_header_text(text_input, "Name the key");
+    text_input_set_result_callback(
+        text_input,
+        ibutton_scene_save_name_text_input_callback,
+        ibutton,
+        ibutton->text_store,
+        IBUTTON_KEY_NAME_SIZE,
+        key_name_is_empty);
+
+    ValidatorIsFile* validator_is_file =
+        validator_is_file_alloc_init(IBUTTON_APP_FOLDER, IBUTTON_APP_EXTENSION, key_name);
+    text_input_set_validator(text_input, validator_is_file_callback, validator_is_file);
+
+    view_dispatcher_switch_to_view(ibutton->view_dispatcher, iButtonViewTextInput);
+}
+
+bool ibutton_scene_save_name_on_event(void* context, SceneManagerEvent event) {
+    iButton* ibutton = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        consumed = true;
+        if(event.event == iButtonCustomEventTextEditResult) {
+            if(ibutton_save_key(ibutton, ibutton->text_store)) {
+                scene_manager_next_scene(ibutton->scene_manager, iButtonSceneSaveSuccess);
+            } else {
+                const uint32_t possible_scenes[] = {
+                    iButtonSceneReadKeyMenu, iButtonSceneSavedKeyMenu, iButtonSceneAddType};
+                ibutton_switch_to_previous_scene_one_of(
+                    ibutton, possible_scenes, sizeof(possible_scenes) / sizeof(uint32_t));
+            }
+        }
+    }
+
+    return consumed;
+}
+
+void ibutton_scene_save_name_on_exit(void* context) {
+    iButton* ibutton = context;
+    TextInput* text_input = ibutton->text_input;
+
+    void* validator_context = text_input_get_validator_callback_context(text_input);
+    text_input_set_validator(text_input, NULL, NULL);
+    validator_is_file_free((ValidatorIsFile*)validator_context);
+
+    text_input_reset(text_input);
+}
diff --git a/applications/ibutton/scenes/ibutton_scene_save_success.c b/applications/ibutton/scenes/ibutton_scene_save_success.c
new file mode 100644
index 00000000..dffda6a0
--- /dev/null
+++ b/applications/ibutton/scenes/ibutton_scene_save_success.c
@@ -0,0 +1,52 @@
+#include "../ibutton_i.h"
+#include <dolphin/dolphin.h>
+
+static void ibutton_scene_save_success_popup_callback(void* context) {
+    iButton* ibutton = context;
+    view_dispatcher_send_custom_event(ibutton->view_dispatcher, iButtonCustomEventBack);
+}
+
+void ibutton_scene_save_success_on_enter(void* context) {
+    iButton* ibutton = context;
+    Popup* popup = ibutton->popup;
+    DOLPHIN_DEED(DolphinDeedIbuttonSave);
+
+    popup_set_icon(popup, 32, 5, &I_DolphinNice_96x59);
+    popup_set_header(popup, "Saved!", 5, 7, AlignLeft, AlignTop);
+
+    popup_set_callback(popup, ibutton_scene_save_success_popup_callback);
+    popup_set_context(popup, ibutton);
+    popup_set_timeout(popup, 1500);
+    popup_enable_timeout(popup);
+
+    view_dispatcher_switch_to_view(ibutton->view_dispatcher, iButtonViewPopup);
+}
+
+bool ibutton_scene_save_success_on_event(void* context, SceneManagerEvent event) {
+    iButton* ibutton = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        consumed = true;
+        if(event.event == iButtonCustomEventBack) {
+            const uint32_t possible_scenes[] = {
+                iButtonSceneReadKeyMenu, iButtonSceneSavedKeyMenu, iButtonSceneAddType};
+            ibutton_switch_to_previous_scene_one_of(
+                ibutton, possible_scenes, sizeof(possible_scenes) / sizeof(uint32_t));
+        }
+    }
+
+    return consumed;
+}
+
+void ibutton_scene_save_success_on_exit(void* context) {
+    iButton* ibutton = context;
+    Popup* popup = ibutton->popup;
+
+    popup_set_text(popup, NULL, 0, 0, AlignCenter, AlignTop);
+    popup_set_icon(popup, 0, 0, NULL);
+
+    popup_disable_timeout(popup);
+    popup_set_context(popup, NULL);
+    popup_set_callback(popup, NULL);
+}
diff --git a/applications/ibutton/scenes/ibutton_scene_saved_key_menu.c b/applications/ibutton/scenes/ibutton_scene_saved_key_menu.c
new file mode 100644
index 00000000..36529772
--- /dev/null
+++ b/applications/ibutton/scenes/ibutton_scene_saved_key_menu.c
@@ -0,0 +1,75 @@
+#include "../ibutton_i.h"
+
+enum SubmenuIndex {
+    SubmenuIndexEmulate,
+    SubmenuIndexWrite,
+    SubmenuIndexEdit,
+    SubmenuIndexDelete,
+    SubmenuIndexInfo,
+};
+
+void ibutton_scene_saved_key_menu_submenu_callback(void* context, uint32_t index) {
+    iButton* ibutton = context;
+    view_dispatcher_send_custom_event(ibutton->view_dispatcher, index);
+}
+
+void ibutton_scene_saved_key_menu_on_enter(void* context) {
+    iButton* ibutton = context;
+    Submenu* submenu = ibutton->submenu;
+
+    submenu_add_item(
+        submenu,
+        "Emulate",
+        SubmenuIndexEmulate,
+        ibutton_scene_saved_key_menu_submenu_callback,
+        ibutton);
+    if(ibutton_key_get_type(ibutton->key) == iButtonKeyDS1990) {
+        submenu_add_item(
+            submenu,
+            "Write",
+            SubmenuIndexWrite,
+            ibutton_scene_saved_key_menu_submenu_callback,
+            ibutton);
+    }
+    submenu_add_item(
+        submenu, "Edit", SubmenuIndexEdit, ibutton_scene_saved_key_menu_submenu_callback, ibutton);
+    submenu_add_item(
+        submenu,
+        "Delete",
+        SubmenuIndexDelete,
+        ibutton_scene_saved_key_menu_submenu_callback,
+        ibutton);
+    submenu_add_item(
+        submenu, "Info", SubmenuIndexInfo, ibutton_scene_saved_key_menu_submenu_callback, ibutton);
+
+    submenu_set_selected_item(submenu, SubmenuIndexEmulate);
+
+    view_dispatcher_switch_to_view(ibutton->view_dispatcher, iButtonViewSubmenu);
+}
+
+bool ibutton_scene_saved_key_menu_on_event(void* context, SceneManagerEvent event) {
+    iButton* ibutton = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        consumed = true;
+        if(event.event == SubmenuIndexEmulate) {
+            scene_manager_next_scene(ibutton->scene_manager, iButtonSceneEmulate);
+        } else if(event.event == SubmenuIndexWrite) {
+            scene_manager_next_scene(ibutton->scene_manager, iButtonSceneWrite);
+        } else if(event.event == SubmenuIndexEdit) {
+            scene_manager_next_scene(ibutton->scene_manager, iButtonSceneAddValue);
+        } else if(event.event == SubmenuIndexDelete) {
+            scene_manager_next_scene(ibutton->scene_manager, iButtonSceneDeleteConfirm);
+        } else if(event.event == SubmenuIndexInfo) {
+            scene_manager_next_scene(ibutton->scene_manager, iButtonSceneInfo);
+        }
+    }
+
+    return consumed;
+}
+
+void ibutton_scene_saved_key_menu_on_exit(void* context) {
+    iButton* ibutton = context;
+    submenu_reset(ibutton->submenu);
+}
diff --git a/applications/ibutton/scenes/ibutton_scene_select_key.c b/applications/ibutton/scenes/ibutton_scene_select_key.c
new file mode 100644
index 00000000..32169a9c
--- /dev/null
+++ b/applications/ibutton/scenes/ibutton_scene_select_key.c
@@ -0,0 +1,22 @@
+#include "../ibutton_i.h"
+
+void ibutton_scene_select_key_on_enter(void* context) {
+    iButton* ibutton = context;
+
+    if(!ibutton_file_select(ibutton)) {
+        scene_manager_search_and_switch_to_previous_scene(
+            ibutton->scene_manager, iButtonSceneStart);
+    } else {
+        scene_manager_next_scene(ibutton->scene_manager, iButtonSceneSavedKeyMenu);
+    }
+}
+
+bool ibutton_scene_select_key_on_event(void* context, SceneManagerEvent event) {
+    UNUSED(context);
+    UNUSED(event);
+    return false;
+}
+
+void ibutton_scene_select_key_on_exit(void* context) {
+    UNUSED(context);
+}
diff --git a/applications/ibutton/scenes/ibutton_scene_start.c b/applications/ibutton/scenes/ibutton_scene_start.c
new file mode 100644
index 00000000..a3141f5a
--- /dev/null
+++ b/applications/ibutton/scenes/ibutton_scene_start.c
@@ -0,0 +1,51 @@
+#include "../ibutton_i.h"
+
+enum SubmenuIndex {
+    SubmenuIndexRead,
+    SubmenuIndexSaved,
+    SubmenuIndexAdd,
+};
+
+void ibutton_scene_start_submenu_callback(void* context, uint32_t index) {
+    iButton* ibutton = context;
+    view_dispatcher_send_custom_event(ibutton->view_dispatcher, index);
+}
+
+void ibutton_scene_start_on_enter(void* context) {
+    iButton* ibutton = context;
+    Submenu* submenu = ibutton->submenu;
+
+    submenu_add_item(
+        submenu, "Read", SubmenuIndexRead, ibutton_scene_start_submenu_callback, ibutton);
+    submenu_add_item(
+        submenu, "Saved", SubmenuIndexSaved, ibutton_scene_start_submenu_callback, ibutton);
+    submenu_add_item(
+        submenu, "Add Manually", SubmenuIndexAdd, ibutton_scene_start_submenu_callback, ibutton);
+
+    submenu_set_selected_item(submenu, SubmenuIndexRead);
+
+    view_dispatcher_switch_to_view(ibutton->view_dispatcher, iButtonViewSubmenu);
+}
+
+bool ibutton_scene_start_on_event(void* context, SceneManagerEvent event) {
+    iButton* ibutton = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        consumed = true;
+        if(event.event == SubmenuIndexRead) {
+            scene_manager_next_scene(ibutton->scene_manager, iButtonSceneRead);
+        } else if(event.event == SubmenuIndexSaved) {
+            scene_manager_next_scene(ibutton->scene_manager, iButtonSceneSelectKey);
+        } else if(event.event == SubmenuIndexAdd) {
+            scene_manager_next_scene(ibutton->scene_manager, iButtonSceneAddType);
+        }
+    }
+
+    return consumed;
+}
+
+void ibutton_scene_start_on_exit(void* context) {
+    iButton* ibutton = context;
+    submenu_reset(ibutton->submenu);
+}
diff --git a/applications/ibutton/scenes/ibutton_scene_write.c b/applications/ibutton/scenes/ibutton_scene_write.c
new file mode 100644
index 00000000..35e45d83
--- /dev/null
+++ b/applications/ibutton/scenes/ibutton_scene_write.c
@@ -0,0 +1,121 @@
+#include "../ibutton_i.h"
+
+typedef enum {
+    iButtonSceneWriteStateDefault,
+    iButtonSceneWriteStateBlinkYellow,
+} iButtonSceneWriteState;
+
+static void ibutton_scene_write_callback(void* context, iButtonWorkerWriteResult result) {
+    iButton* ibutton = context;
+    view_dispatcher_send_custom_event(ibutton->view_dispatcher, result);
+}
+
+void ibutton_scene_write_on_enter(void* context) {
+    iButton* ibutton = context;
+    Popup* popup = ibutton->popup;
+    iButtonKey* key = ibutton->key;
+    iButtonWorker* worker = ibutton->key_worker;
+
+    const uint8_t* key_data = ibutton_key_get_data_p(key);
+    const char* key_name = ibutton_key_get_name_p(key);
+
+    uint8_t line_count = 2;
+
+    // check that stored key has name
+    if(strcmp(key_name, "") != 0) {
+        ibutton_text_store_set(ibutton, "writing\n%s", key_name);
+        line_count = 2;
+    } else {
+        // if not, show key data
+        switch(ibutton_key_get_type(key)) {
+        case iButtonKeyDS1990:
+            ibutton_text_store_set(
+                ibutton,
+                "writing\n%02X %02X %02X %02X\n%02X %02X %02X %02X",
+                key_data[0],
+                key_data[1],
+                key_data[2],
+                key_data[3],
+                key_data[4],
+                key_data[5],
+                key_data[6],
+                key_data[7]);
+            line_count = 3;
+            break;
+        case iButtonKeyCyfral:
+            ibutton_text_store_set(ibutton, "writing\n%02X %02X", key_data[0], key_data[1]);
+            line_count = 2;
+            break;
+        case iButtonKeyMetakom:
+            ibutton_text_store_set(
+                ibutton,
+                "writing\n%02X %02X %02X %02X",
+                key_data[0],
+                key_data[1],
+                key_data[2],
+                key_data[3]);
+            line_count = 2;
+            break;
+        }
+    }
+
+    switch(line_count) {
+    case 3:
+        popup_set_header(popup, "iButton", 82, 18, AlignCenter, AlignBottom);
+        popup_set_text(popup, ibutton->text_store, 82, 22, AlignCenter, AlignTop);
+        break;
+
+    default:
+        popup_set_header(popup, "iButton", 82, 24, AlignCenter, AlignBottom);
+        popup_set_text(popup, ibutton->text_store, 82, 28, AlignCenter, AlignTop);
+        break;
+    }
+
+    popup_set_icon(popup, 2, 10, &I_iButtonKey_49x44);
+
+    scene_manager_set_scene_state(
+        ibutton->scene_manager, iButtonSceneWrite, iButtonSceneWriteStateDefault);
+    view_dispatcher_switch_to_view(ibutton->view_dispatcher, iButtonViewPopup);
+
+    ibutton_worker_write_set_callback(worker, ibutton_scene_write_callback, ibutton);
+    ibutton_worker_write_start(worker, key);
+}
+
+bool ibutton_scene_write_on_event(void* context, SceneManagerEvent event) {
+    iButton* ibutton = context;
+    SceneManager* scene_manager = ibutton->scene_manager;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        consumed = true;
+        if((event.event == iButtonWorkerWriteOK) || (event.event == iButtonWorkerWriteSameKey)) {
+            scene_manager_next_scene(scene_manager, iButtonSceneWriteSuccess);
+        } else if(event.event == iButtonWorkerWriteNoDetect) {
+            scene_manager_set_scene_state(
+                scene_manager, iButtonSceneWrite, iButtonSceneWriteStateDefault);
+        } else if(event.event == iButtonWorkerWriteCannotWrite) {
+            scene_manager_set_scene_state(
+                scene_manager, iButtonSceneWrite, iButtonSceneWriteStateBlinkYellow);
+        }
+
+    } else if(event.type == SceneManagerEventTypeTick) {
+        consumed = true;
+        if(scene_manager_get_scene_state(scene_manager, iButtonSceneWrite) ==
+           iButtonSceneWriteStateBlinkYellow) {
+            ibutton_notification_message(ibutton, iButtonNotificationMessageYellowBlink);
+        } else {
+            ibutton_notification_message(ibutton, iButtonNotificationMessageEmulate);
+        }
+    }
+
+    return consumed;
+}
+
+void ibutton_scene_write_on_exit(void* context) {
+    iButton* ibutton = context;
+    Popup* popup = ibutton->popup;
+    ibutton_worker_stop(ibutton->key_worker);
+    popup_set_header(popup, NULL, 0, 0, AlignCenter, AlignBottom);
+    popup_set_text(popup, NULL, 0, 0, AlignCenter, AlignTop);
+    popup_set_icon(popup, 0, 0, NULL);
+}
diff --git a/applications/ibutton/scenes/ibutton_scene_write_success.c b/applications/ibutton/scenes/ibutton_scene_write_success.c
new file mode 100644
index 00000000..6abafbb3
--- /dev/null
+++ b/applications/ibutton/scenes/ibutton_scene_write_success.c
@@ -0,0 +1,52 @@
+#include "../ibutton_i.h"
+
+static void ibutton_scene_write_success_popup_callback(void* context) {
+    iButton* ibutton = context;
+    view_dispatcher_send_custom_event(ibutton->view_dispatcher, iButtonCustomEventBack);
+    ibutton_notification_message(ibutton, iButtonNotificationMessageGreenOff);
+}
+
+void ibutton_scene_write_success_on_enter(void* context) {
+    iButton* ibutton = context;
+    Popup* popup = ibutton->popup;
+
+    popup_set_icon(popup, 0, 12, &I_iButtonDolphinVerySuccess_108x52);
+    popup_set_text(popup, "Successfully written!", 40, 12, AlignLeft, AlignBottom);
+
+    popup_set_callback(popup, ibutton_scene_write_success_popup_callback);
+    popup_set_context(popup, ibutton);
+    popup_set_timeout(popup, 1500);
+    popup_enable_timeout(popup);
+
+    view_dispatcher_switch_to_view(ibutton->view_dispatcher, iButtonViewPopup);
+    ibutton_notification_message(ibutton, iButtonNotificationMessageSuccess);
+    ibutton_notification_message(ibutton, iButtonNotificationMessageGreenOn);
+}
+
+bool ibutton_scene_write_success_on_event(void* context, SceneManagerEvent event) {
+    iButton* ibutton = context;
+    bool consumed = false;
+
+    if(event.type == SceneManagerEventTypeCustom) {
+        consumed = true;
+        if(event.event == iButtonCustomEventBack) {
+            const uint32_t possible_scenes[] = {iButtonSceneReadKeyMenu, iButtonSceneStart};
+            ibutton_switch_to_previous_scene_one_of(
+                ibutton, possible_scenes, sizeof(possible_scenes) / sizeof(uint32_t));
+        }
+    }
+
+    return consumed;
+}
+
+void ibutton_scene_write_success_on_exit(void* context) {
+    iButton* ibutton = context;
+    Popup* popup = ibutton->popup;
+
+    popup_set_text(popup, NULL, 0, 0, AlignCenter, AlignTop);
+    popup_set_icon(popup, 0, 0, NULL);
+
+    popup_disable_timeout(popup);
+    popup_set_context(popup, NULL);
+    popup_set_callback(popup, NULL);
+}
diff --git a/applications/infrared/cli/infrared_cli.cpp b/applications/infrared/cli/infrared_cli.cpp
index 15de2d85..b60e4599 100644
--- a/applications/infrared/cli/infrared_cli.cpp
+++ b/applications/infrared/cli/infrared_cli.cpp
@@ -60,6 +60,8 @@ static void signal_received_callback(void* context, InfraredWorkerSignal* receiv
 }
 
 static void infrared_cli_start_ir_rx(Cli* cli, string_t args) {
+    UNUSED(cli);
+    UNUSED(args);
     InfraredWorker* worker = infrared_worker_alloc();
     infrared_worker_rx_start(worker);
     infrared_worker_rx_set_received_signal_callback(worker, signal_received_callback, cli);
@@ -140,6 +142,7 @@ static bool parse_signal_raw(
 }
 
 static void infrared_cli_start_ir_tx(Cli* cli, string_t args) {
+    UNUSED(cli);
     InfraredMessage message;
     const char* str = string_get_cstr(args);
     uint32_t frequency;
@@ -160,6 +163,7 @@ static void infrared_cli_start_ir_tx(Cli* cli, string_t args) {
 }
 
 static void infrared_cli_start_ir(Cli* cli, string_t args, void* context) {
+    UNUSED(context);
     if(furi_hal_infrared_is_busy()) {
         printf("INFRARED is busy. Exit.");
         return;
diff --git a/applications/infrared/helpers/infrared_parser.cpp b/applications/infrared/helpers/infrared_parser.cpp
index 12a93924..d85a7269 100644
--- a/applications/infrared/helpers/infrared_parser.cpp
+++ b/applications/infrared/helpers/infrared_parser.cpp
@@ -145,7 +145,7 @@ bool infrared_parser_is_raw_signal_valid(
             frequency);
         result = false;
     } else if((duty_cycle <= 0) || (duty_cycle > 1)) {
-        FURI_LOG_E(TAG, "Duty cycle is out of range (0 - 1): %f", duty_cycle);
+        FURI_LOG_E(TAG, "Duty cycle is out of range (0 - 1): %f", (double)duty_cycle);
         result = false;
     } else if((timings_cnt <= 0) || (timings_cnt > MAX_TIMINGS_AMOUNT)) {
         FURI_LOG_E(
diff --git a/applications/infrared/infrared_app_event.h b/applications/infrared/infrared_app_event.h
index fdea826a..168ba0b1 100644
--- a/applications/infrared/infrared_app_event.h
+++ b/applications/infrared/infrared_app_event.h
@@ -36,6 +36,7 @@ public:
     };
 
     union {
+        int32_t dummy;
         /** Menu selected event type payload. Selected index. */
         int32_t menu_index;
         /** DialogEx view module event type payload */
diff --git a/applications/infrared/infrared_app_view_manager.cpp b/applications/infrared/infrared_app_view_manager.cpp
index 1e08471d..f1e48ed4 100644
--- a/applications/infrared/infrared_app_view_manager.cpp
+++ b/applications/infrared/infrared_app_view_manager.cpp
@@ -148,7 +148,7 @@ void InfraredAppViewManager::send_event(InfraredAppEvent* event) {
     osMessageQueuePut(event_queue, event, 0, timeout);
 }
 
-uint32_t InfraredAppViewManager::previous_view_callback(void* context) {
+uint32_t InfraredAppViewManager::previous_view_callback(void*) {
     if(event_queue != NULL) {
         InfraredAppEvent event;
         event.type = InfraredAppEvent::Type::Back;
diff --git a/applications/infrared/scene/infrared_app_scene_ask_back.cpp b/applications/infrared/scene/infrared_app_scene_ask_back.cpp
index 751816af..65d7ca57 100644
--- a/applications/infrared/scene/infrared_app_scene_ask_back.cpp
+++ b/applications/infrared/scene/infrared_app_scene_ask_back.cpp
@@ -69,5 +69,5 @@ bool InfraredAppSceneAskBack::on_event(InfraredApp* app, InfraredAppEvent* event
     return consumed;
 }
 
-void InfraredAppSceneAskBack::on_exit(InfraredApp* app) {
+void InfraredAppSceneAskBack::on_exit(InfraredApp*) {
 }
diff --git a/applications/infrared/scene/infrared_app_scene_edit_delete.cpp b/applications/infrared/scene/infrared_app_scene_edit_delete.cpp
index d49acec5..e17cfee0 100644
--- a/applications/infrared/scene/infrared_app_scene_edit_delete.cpp
+++ b/applications/infrared/scene/infrared_app_scene_edit_delete.cpp
@@ -96,5 +96,5 @@ bool InfraredAppSceneEditDelete::on_event(InfraredApp* app, InfraredAppEvent* ev
     return consumed;
 }
 
-void InfraredAppSceneEditDelete::on_exit(InfraredApp* app) {
+void InfraredAppSceneEditDelete::on_exit(InfraredApp*) {
 }
diff --git a/applications/infrared/scene/infrared_app_scene_edit_rename_done.cpp b/applications/infrared/scene/infrared_app_scene_edit_rename_done.cpp
index 2b6afafd..803481f6 100644
--- a/applications/infrared/scene/infrared_app_scene_edit_rename_done.cpp
+++ b/applications/infrared/scene/infrared_app_scene_edit_rename_done.cpp
@@ -26,5 +26,5 @@ bool InfraredAppSceneEditRenameDone::on_event(InfraredApp* app, InfraredAppEvent
     return consumed;
 }
 
-void InfraredAppSceneEditRenameDone::on_exit(InfraredApp* app) {
+void InfraredAppSceneEditRenameDone::on_exit(InfraredApp*) {
 }
diff --git a/applications/infrared/scene/infrared_app_scene_learn_enter_name.cpp b/applications/infrared/scene/infrared_app_scene_learn_enter_name.cpp
index 0f148e80..7d15a7c5 100644
--- a/applications/infrared/scene/infrared_app_scene_learn_enter_name.cpp
+++ b/applications/infrared/scene/infrared_app_scene_learn_enter_name.cpp
@@ -56,5 +56,5 @@ bool InfraredAppSceneLearnEnterName::on_event(InfraredApp* app, InfraredAppEvent
     return consumed;
 }
 
-void InfraredAppSceneLearnEnterName::on_exit(InfraredApp* app) {
+void InfraredAppSceneLearnEnterName::on_exit(InfraredApp*) {
 }
diff --git a/applications/infrared/scene/infrared_app_scene_remote_list.cpp b/applications/infrared/scene/infrared_app_scene_remote_list.cpp
index 95ef2e41..f59ff3e9 100644
--- a/applications/infrared/scene/infrared_app_scene_remote_list.cpp
+++ b/applications/infrared/scene/infrared_app_scene_remote_list.cpp
@@ -40,11 +40,9 @@ void InfraredAppSceneRemoteList::on_enter(InfraredApp* app) {
     }
 }
 
-bool InfraredAppSceneRemoteList::on_event(InfraredApp* app, InfraredAppEvent* event) {
-    bool consumed = false;
-
-    return consumed;
+bool InfraredAppSceneRemoteList::on_event(InfraredApp*, InfraredAppEvent*) {
+    return false;
 }
 
-void InfraredAppSceneRemoteList::on_exit(InfraredApp* app) {
+void InfraredAppSceneRemoteList::on_exit(InfraredApp*) {
 }
diff --git a/applications/infrared/scene/infrared_app_scene_universal_common.cpp b/applications/infrared/scene/infrared_app_scene_universal_common.cpp
index a9220eaf..9e7a18f4 100644
--- a/applications/infrared/scene/infrared_app_scene_universal_common.cpp
+++ b/applications/infrared/scene/infrared_app_scene_universal_common.cpp
@@ -25,6 +25,7 @@ static void infrared_progress_back_callback(void* context) {
     auto app = static_cast<InfraredApp*>(context);
 
     InfraredAppEvent infrared_event = {
+        .payload = {.dummy = 0},
         .type = InfraredAppEvent::Type::Back,
     };
     app->get_view_manager()->clear_events();
@@ -57,7 +58,10 @@ bool InfraredAppSceneUniversalCommon::on_event(InfraredApp* app, InfraredAppEven
         if(event->type == InfraredAppEvent::Type::Tick) {
             auto view_manager = app->get_view_manager();
             app->notify_blink_send();
-            InfraredAppEvent tick_event = {.type = InfraredAppEvent::Type::Tick};
+            InfraredAppEvent tick_event = {
+                .payload = {.dummy = 0},
+                .type = InfraredAppEvent::Type::Tick,
+            };
             view_manager->send_event(&tick_event);
             bool result = brute_force.send_next_bruteforce();
             if(result) {
diff --git a/applications/input/input.c b/applications/input/input.c
index a2dd62f7..dd824dcb 100644
--- a/applications/input/input.c
+++ b/applications/input/input.c
@@ -35,6 +35,7 @@ void input_press_timer_callback(void* arg) {
 }
 
 void input_isr(void* _ctx) {
+    UNUSED(_ctx);
     osThreadFlagsSet(input->thread, INPUT_THREAD_FLAG_ISR);
 }
 
diff --git a/applications/input/input_cli.c b/applications/input/input_cli.c
index 00591a75..afb05afd 100644
--- a/applications/input/input_cli.c
+++ b/applications/input/input_cli.c
@@ -20,6 +20,7 @@ static void input_cli_dump_events_callback(const void* value, void* ctx) {
 }
 
 static void input_cli_dump(Cli* cli, string_t args, Input* input) {
+    UNUSED(args);
     osMessageQueueId_t input_queue = osMessageQueueNew(8, sizeof(InputEvent), NULL);
     FuriPubSubSubscription* input_subscription =
         furi_pubsub_subscribe(input->event_pubsub, input_cli_dump_events_callback, input_queue);
@@ -47,6 +48,7 @@ static void input_cli_send_print_usage() {
 }
 
 static void input_cli_send(Cli* cli, string_t args, Input* input) {
+    UNUSED(cli);
     InputEvent event;
     string_t key_str;
     string_init(key_str);
diff --git a/applications/lfrfid/helpers/decoder_analyzer.cpp b/applications/lfrfid/helpers/decoder_analyzer.cpp
index 8142f14c..8d344b88 100644
--- a/applications/lfrfid/helpers/decoder_analyzer.cpp
+++ b/applications/lfrfid/helpers/decoder_analyzer.cpp
@@ -2,7 +2,8 @@
 #include <furi.h>
 #include <furi_hal.h>
 
-bool DecoderAnalyzer::read(uint8_t* _data, uint8_t _data_size) {
+// FIXME: unused args?
+bool DecoderAnalyzer::read(uint8_t* /* _data */, uint8_t /* _data_size */) {
     bool result = false;
 
     if(ready) {
@@ -21,6 +22,7 @@ bool DecoderAnalyzer::read(uint8_t* _data, uint8_t _data_size) {
 }
 
 void DecoderAnalyzer::process_front(bool polarity, uint32_t time) {
+    UNUSED(polarity);
     if(ready) return;
 
     data[data_index] = time;
diff --git a/applications/lfrfid/helpers/decoder_gpio_out.cpp b/applications/lfrfid/helpers/decoder_gpio_out.cpp
index 03e03994..dfb43426 100644
--- a/applications/lfrfid/helpers/decoder_gpio_out.cpp
+++ b/applications/lfrfid/helpers/decoder_gpio_out.cpp
@@ -2,7 +2,7 @@
 #include <furi.h>
 #include <furi_hal.h>
 
-void DecoderGpioOut::process_front(bool polarity, uint32_t time) {
+void DecoderGpioOut::process_front(bool polarity, uint32_t /* time */) {
     furi_hal_gpio_write(&gpio_ext_pa7, polarity);
 }
 
diff --git a/applications/lfrfid/helpers/decoder_hid26.h b/applications/lfrfid/helpers/decoder_hid26.h
index b409ca43..c73ff88c 100644
--- a/applications/lfrfid/helpers/decoder_hid26.h
+++ b/applications/lfrfid/helpers/decoder_hid26.h
@@ -21,4 +21,4 @@ private:
 
     void reset_state();
     ProtocolHID10301 hid;
-};
\ No newline at end of file
+};
diff --git a/applications/lfrfid/helpers/decoder_indala.cpp b/applications/lfrfid/helpers/decoder_indala.cpp
index eb711fa2..100dde73 100644
--- a/applications/lfrfid/helpers/decoder_indala.cpp
+++ b/applications/lfrfid/helpers/decoder_indala.cpp
@@ -73,4 +73,4 @@ void DecoderIndala::reset_state() {
     cursed_raw_data = 0;
     ready = false;
     cursed_data_valid = false;
-}
\ No newline at end of file
+}
diff --git a/applications/lfrfid/helpers/decoder_indala.h b/applications/lfrfid/helpers/decoder_indala.h
index 94ad8b16..5fbde7b6 100644
--- a/applications/lfrfid/helpers/decoder_indala.h
+++ b/applications/lfrfid/helpers/decoder_indala.h
@@ -22,4 +22,4 @@ private:
     std::atomic<bool> ready;
     std::atomic<bool> cursed_data_valid;
     ProtocolIndala40134 indala;
-};
\ No newline at end of file
+};
diff --git a/applications/lfrfid/helpers/emmarin.h b/applications/lfrfid/helpers/emmarin.h
index 5d2e2439..ff8273bf 100644
--- a/applications/lfrfid/helpers/emmarin.h
+++ b/applications/lfrfid/helpers/emmarin.h
@@ -12,4 +12,4 @@
 #define EM_STOP_MASK (0x1LLU << EM_STOP_POS)
 
 #define EM_HEADER_AND_STOP_MASK (EM_HEADER_MASK | EM_STOP_MASK)
-#define EM_HEADER_AND_STOP_DATA (EM_HEADER_MASK)
\ No newline at end of file
+#define EM_HEADER_AND_STOP_DATA (EM_HEADER_MASK)
diff --git a/applications/lfrfid/helpers/encoder_emmarin.h b/applications/lfrfid/helpers/encoder_emmarin.h
index fa78122f..560daec1 100644
--- a/applications/lfrfid/helpers/encoder_emmarin.h
+++ b/applications/lfrfid/helpers/encoder_emmarin.h
@@ -19,4 +19,4 @@ private:
 
     uint64_t card_data;
     uint8_t card_data_index;
-};
\ No newline at end of file
+};
diff --git a/applications/lfrfid/helpers/encoder_hid_h10301.h b/applications/lfrfid/helpers/encoder_hid_h10301.h
index e5edd0a0..8cc5aa5c 100644
--- a/applications/lfrfid/helpers/encoder_hid_h10301.h
+++ b/applications/lfrfid/helpers/encoder_hid_h10301.h
@@ -23,4 +23,4 @@ private:
     void write_raw_bit(bool bit, uint8_t position);
 
     OscFSK* fsk;
-};
\ No newline at end of file
+};
diff --git a/applications/lfrfid/helpers/encoder_indala_40134.h b/applications/lfrfid/helpers/encoder_indala_40134.h
index 8bdb3acd..eda29457 100644
--- a/applications/lfrfid/helpers/encoder_indala_40134.h
+++ b/applications/lfrfid/helpers/encoder_indala_40134.h
@@ -20,4 +20,4 @@ private:
     bool last_bit;
     bool current_polarity;
     static const uint8_t clock_per_bit = 16;
-};
\ No newline at end of file
+};
diff --git a/applications/lfrfid/helpers/key_info.cpp b/applications/lfrfid/helpers/key_info.cpp
index 74b4fa5c..ed2b20a9 100644
--- a/applications/lfrfid/helpers/key_info.cpp
+++ b/applications/lfrfid/helpers/key_info.cpp
@@ -63,4 +63,4 @@ uint8_t lfrfid_key_get_type_data_count(LfrfidKeyType type) {
     }
 
     return 0;
-}
\ No newline at end of file
+}
diff --git a/applications/lfrfid/helpers/key_info.h b/applications/lfrfid/helpers/key_info.h
index 277ede08..e465011d 100644
--- a/applications/lfrfid/helpers/key_info.h
+++ b/applications/lfrfid/helpers/key_info.h
@@ -13,4 +13,4 @@ enum class LfrfidKeyType : uint8_t {
 const char* lfrfid_key_get_type_string(LfrfidKeyType type);
 const char* lfrfid_key_get_manufacturer_string(LfrfidKeyType type);
 bool lfrfid_key_get_string_type(const char* string, LfrfidKeyType* type);
-uint8_t lfrfid_key_get_type_data_count(LfrfidKeyType type);
\ No newline at end of file
+uint8_t lfrfid_key_get_type_data_count(LfrfidKeyType type);
diff --git a/applications/lfrfid/helpers/osc_fsk.h b/applications/lfrfid/helpers/osc_fsk.h
index e9bd322b..eaaaa10a 100644
--- a/applications/lfrfid/helpers/osc_fsk.h
+++ b/applications/lfrfid/helpers/osc_fsk.h
@@ -27,4 +27,4 @@ private:
     const uint16_t freq[2];
     const uint16_t osc_phase_max;
     int32_t osc_phase_current;
-};
\ No newline at end of file
+};
diff --git a/applications/lfrfid/helpers/protocols/protocol_generic.h b/applications/lfrfid/helpers/protocols/protocol_generic.h
index 8d8edfb2..d593f708 100644
--- a/applications/lfrfid/helpers/protocols/protocol_generic.h
+++ b/applications/lfrfid/helpers/protocols/protocol_generic.h
@@ -57,4 +57,4 @@ public:
     virtual bool can_be_decoded(const uint8_t* encoded_data, const uint8_t encoded_data_size) = 0;
 
     virtual ~ProtocolGeneric(){};
-};
\ No newline at end of file
+};
diff --git a/applications/lfrfid/helpers/protocols/protocol_hid_h10301.h b/applications/lfrfid/helpers/protocols/protocol_hid_h10301.h
index d769e874..fbd6e0b2 100644
--- a/applications/lfrfid/helpers/protocols/protocol_hid_h10301.h
+++ b/applications/lfrfid/helpers/protocols/protocol_hid_h10301.h
@@ -19,4 +19,4 @@ public:
         const uint8_t decoded_data_size) final;
 
     bool can_be_decoded(const uint8_t* encoded_data, const uint8_t encoded_data_size) final;
-};
\ No newline at end of file
+};
diff --git a/applications/lfrfid/helpers/protocols/protocol_indala_40134.cpp b/applications/lfrfid/helpers/protocols/protocol_indala_40134.cpp
index e77c808f..482339de 100644
--- a/applications/lfrfid/helpers/protocols/protocol_indala_40134.cpp
+++ b/applications/lfrfid/helpers/protocols/protocol_indala_40134.cpp
@@ -234,4 +234,4 @@ bool ProtocolIndala40134::can_be_decoded(
     } while(false);
 
     return can_be_decoded;
-}
\ No newline at end of file
+}
diff --git a/applications/lfrfid/helpers/pulse_joiner.h b/applications/lfrfid/helpers/pulse_joiner.h
index 96d4482e..1639d837 100644
--- a/applications/lfrfid/helpers/pulse_joiner.h
+++ b/applications/lfrfid/helpers/pulse_joiner.h
@@ -33,4 +33,4 @@ private:
     uint8_t pulse_index = 0;
     static const uint8_t pulse_max = 6;
     Pulse pulses[pulse_max];
-};
\ No newline at end of file
+};
diff --git a/applications/lfrfid/helpers/rfid_key.cpp b/applications/lfrfid/helpers/rfid_key.cpp
index 4a54e470..02e45e68 100644
--- a/applications/lfrfid/helpers/rfid_key.cpp
+++ b/applications/lfrfid/helpers/rfid_key.cpp
@@ -36,7 +36,7 @@ const char* RfidKey::get_type_text() {
     return lfrfid_key_get_type_string(type);
 }
 
-const uint8_t RfidKey::get_type_data_count() {
+uint8_t RfidKey::get_type_data_count() const {
     return lfrfid_key_get_type_data_count(type);
 }
 
diff --git a/applications/lfrfid/helpers/rfid_key.h b/applications/lfrfid/helpers/rfid_key.h
index 83251625..29b87cf9 100644
--- a/applications/lfrfid/helpers/rfid_key.h
+++ b/applications/lfrfid/helpers/rfid_key.h
@@ -14,7 +14,7 @@ public:
     LfrfidKeyType get_type();
     const uint8_t* get_data();
     const char* get_type_text();
-    const uint8_t get_type_data_count();
+    uint8_t get_type_data_count() const;
     char* get_name();
     uint8_t get_name_length();
     void clear();
diff --git a/applications/lfrfid/helpers/rfid_worker.h b/applications/lfrfid/helpers/rfid_worker.h
index 27ec145c..2c49ad14 100644
--- a/applications/lfrfid/helpers/rfid_worker.h
+++ b/applications/lfrfid/helpers/rfid_worker.h
@@ -45,4 +45,4 @@ private:
     void sq_write_validate();
     uint16_t validate_counts;
     void sq_write_stop_validate();
-};
\ No newline at end of file
+};
diff --git a/applications/lfrfid/helpers/rfid_writer.h b/applications/lfrfid/helpers/rfid_writer.h
index 3ec3c1dd..38329877 100644
--- a/applications/lfrfid/helpers/rfid_writer.h
+++ b/applications/lfrfid/helpers/rfid_writer.h
@@ -17,4 +17,4 @@ private:
     void write_byte(uint8_t value);
     void write_block(uint8_t page, uint8_t block, bool lock_bit, uint32_t data);
     void write_reset();
-};
\ No newline at end of file
+};
diff --git a/applications/lfrfid/helpers/state_sequencer.h b/applications/lfrfid/helpers/state_sequencer.h
index e0ad135f..12512ab5 100644
--- a/applications/lfrfid/helpers/state_sequencer.h
+++ b/applications/lfrfid/helpers/state_sequencer.h
@@ -22,4 +22,4 @@ private:
     uint32_t tick_count;
 
     void do_nothing();
-};
\ No newline at end of file
+};
diff --git a/applications/lfrfid/lfrfid_cli.cpp b/applications/lfrfid/lfrfid_cli.cpp
index 235dd68f..dbd37ddc 100644
--- a/applications/lfrfid/lfrfid_cli.cpp
+++ b/applications/lfrfid/lfrfid_cli.cpp
@@ -100,6 +100,8 @@ static void lfrfid_cli_read(Cli* cli, string_t args) {
 }
 
 static void lfrfid_cli_write(Cli* cli, string_t args) {
+    UNUSED(cli);
+    UNUSED(args);
     // TODO implement rfid write
     printf("Not implemented :(\r\n");
 }
@@ -147,6 +149,7 @@ static void lfrfid_cli_emulate(Cli* cli, string_t args) {
 }
 
 static void lfrfid_cli(Cli* cli, string_t args, void* context) {
+    UNUSED(context);
     string_t cmd;
     string_init(cmd);
 
diff --git a/applications/lfrfid/scene/lfrfid_app_scene_delete_confirm.cpp b/applications/lfrfid/scene/lfrfid_app_scene_delete_confirm.cpp
index 5b7ac0f9..40bd9e36 100644
--- a/applications/lfrfid/scene/lfrfid_app_scene_delete_confirm.cpp
+++ b/applications/lfrfid/scene/lfrfid_app_scene_delete_confirm.cpp
@@ -3,7 +3,7 @@
 #include "../view/elements/icon_element.h"
 #include "../view/elements/string_element.h"
 
-void LfRfidAppSceneDeleteConfirm::on_enter(LfRfidApp* app, bool need_restore) {
+void LfRfidAppSceneDeleteConfirm::on_enter(LfRfidApp* app, bool /* need_restore */) {
     string_init(string_data);
     string_init(string_decrypted);
     string_init(string_header);
diff --git a/applications/lfrfid/scene/lfrfid_app_scene_delete_confirm.h b/applications/lfrfid/scene/lfrfid_app_scene_delete_confirm.h
index 36d436a4..e30764f0 100644
--- a/applications/lfrfid/scene/lfrfid_app_scene_delete_confirm.h
+++ b/applications/lfrfid/scene/lfrfid_app_scene_delete_confirm.h
@@ -14,4 +14,4 @@ private:
     string_t string_header;
     string_t string_data;
     string_t string_decrypted;
-};
\ No newline at end of file
+};
diff --git a/applications/lfrfid/scene/lfrfid_app_scene_delete_success.cpp b/applications/lfrfid/scene/lfrfid_app_scene_delete_success.cpp
index a4f2bf38..9820338d 100644
--- a/applications/lfrfid/scene/lfrfid_app_scene_delete_success.cpp
+++ b/applications/lfrfid/scene/lfrfid_app_scene_delete_success.cpp
@@ -1,6 +1,6 @@
 #include "lfrfid_app_scene_delete_success.h"
 
-void LfRfidAppSceneDeleteSuccess::on_enter(LfRfidApp* app, bool need_restore) {
+void LfRfidAppSceneDeleteSuccess::on_enter(LfRfidApp* app, bool /* need_restore */) {
     auto popup = app->view_controller.get<PopupVM>();
 
     popup->set_icon(0, 2, &I_DolphinMafia_115x62);
@@ -35,4 +35,4 @@ void LfRfidAppSceneDeleteSuccess::timeout_callback(void* context) {
     LfRfidApp::Event event;
     event.type = LfRfidApp::EventType::Back;
     app->view_controller.send_event(&event);
-}
\ No newline at end of file
+}
diff --git a/applications/lfrfid/scene/lfrfid_app_scene_delete_success.h b/applications/lfrfid/scene/lfrfid_app_scene_delete_success.h
index 01f929e7..009b9f25 100644
--- a/applications/lfrfid/scene/lfrfid_app_scene_delete_success.h
+++ b/applications/lfrfid/scene/lfrfid_app_scene_delete_success.h
@@ -9,4 +9,4 @@ public:
 
 private:
     static void timeout_callback(void* context);
-};
\ No newline at end of file
+};
diff --git a/applications/lfrfid/scene/lfrfid_app_scene_emulate.cpp b/applications/lfrfid/scene/lfrfid_app_scene_emulate.cpp
index 17472e16..f1118a48 100644
--- a/applications/lfrfid/scene/lfrfid_app_scene_emulate.cpp
+++ b/applications/lfrfid/scene/lfrfid_app_scene_emulate.cpp
@@ -1,7 +1,7 @@
 #include "lfrfid_app_scene_emulate.h"
 #include <dolphin/dolphin.h>
 
-void LfRfidAppSceneEmulate::on_enter(LfRfidApp* app, bool need_restore) {
+void LfRfidAppSceneEmulate::on_enter(LfRfidApp* app, bool /* need_restore */) {
     string_init(data_string);
 
     DOLPHIN_DEED(DolphinDeedRfidEmulate);
diff --git a/applications/lfrfid/scene/lfrfid_app_scene_emulate.h b/applications/lfrfid/scene/lfrfid_app_scene_emulate.h
index ad5c8418..937e49af 100644
--- a/applications/lfrfid/scene/lfrfid_app_scene_emulate.h
+++ b/applications/lfrfid/scene/lfrfid_app_scene_emulate.h
@@ -9,4 +9,4 @@ public:
 
 private:
     string_t data_string;
-};
\ No newline at end of file
+};
diff --git a/applications/lfrfid/scene/lfrfid_app_scene_exit_confirm.cpp b/applications/lfrfid/scene/lfrfid_app_scene_exit_confirm.cpp
index 262dfca1..d423cec9 100644
--- a/applications/lfrfid/scene/lfrfid_app_scene_exit_confirm.cpp
+++ b/applications/lfrfid/scene/lfrfid_app_scene_exit_confirm.cpp
@@ -3,7 +3,7 @@
 #include "../view/elements/icon_element.h"
 #include "../view/elements/string_element.h"
 
-void LfRfidAppSceneExitConfirm::on_enter(LfRfidApp* app, bool need_restore) {
+void LfRfidAppSceneExitConfirm::on_enter(LfRfidApp* app, bool /* need_restore */) {
     auto container = app->view_controller.get<ContainerVM>();
 
     auto button = container->add<ButtonElement>();
diff --git a/applications/lfrfid/scene/lfrfid_app_scene_exit_confirm.h b/applications/lfrfid/scene/lfrfid_app_scene_exit_confirm.h
index 4f960d22..a0a10232 100644
--- a/applications/lfrfid/scene/lfrfid_app_scene_exit_confirm.h
+++ b/applications/lfrfid/scene/lfrfid_app_scene_exit_confirm.h
@@ -10,4 +10,4 @@ public:
 private:
     static void exit_callback(void* context);
     static void stay_callback(void* context);
-};
\ No newline at end of file
+};
diff --git a/applications/lfrfid/scene/lfrfid_app_scene_read.cpp b/applications/lfrfid/scene/lfrfid_app_scene_read.cpp
index 48175590..f87aa200 100644
--- a/applications/lfrfid/scene/lfrfid_app_scene_read.cpp
+++ b/applications/lfrfid/scene/lfrfid_app_scene_read.cpp
@@ -1,7 +1,7 @@
 #include "lfrfid_app_scene_read.h"
 #include <dolphin/dolphin.h>
 
-void LfRfidAppSceneRead::on_enter(LfRfidApp* app, bool need_restore) {
+void LfRfidAppSceneRead::on_enter(LfRfidApp* app, bool /* need_restore */) {
     auto popup = app->view_controller.get<PopupVM>();
 
     DOLPHIN_DEED(DolphinDeedRfidRead);
diff --git a/applications/lfrfid/scene/lfrfid_app_scene_read.h b/applications/lfrfid/scene/lfrfid_app_scene_read.h
index b978270c..b5035b72 100644
--- a/applications/lfrfid/scene/lfrfid_app_scene_read.h
+++ b/applications/lfrfid/scene/lfrfid_app_scene_read.h
@@ -6,4 +6,4 @@ public:
     void on_enter(LfRfidApp* app, bool need_restore) final;
     bool on_event(LfRfidApp* app, LfRfidApp::Event* event) final;
     void on_exit(LfRfidApp* app) final;
-};
\ No newline at end of file
+};
diff --git a/applications/lfrfid/scene/lfrfid_app_scene_read_menu.h b/applications/lfrfid/scene/lfrfid_app_scene_read_menu.h
index 43d68a81..2b50b96f 100644
--- a/applications/lfrfid/scene/lfrfid_app_scene_read_menu.h
+++ b/applications/lfrfid/scene/lfrfid_app_scene_read_menu.h
@@ -10,4 +10,4 @@ public:
 private:
     static void submenu_callback(void* context, uint32_t index);
     uint32_t submenu_item_selected = 0;
-};
\ No newline at end of file
+};
diff --git a/applications/lfrfid/scene/lfrfid_app_scene_read_success.cpp b/applications/lfrfid/scene/lfrfid_app_scene_read_success.cpp
index 8f6a0b57..2b81a58a 100644
--- a/applications/lfrfid/scene/lfrfid_app_scene_read_success.cpp
+++ b/applications/lfrfid/scene/lfrfid_app_scene_read_success.cpp
@@ -3,7 +3,7 @@
 #include "../view/elements/icon_element.h"
 #include "../view/elements/string_element.h"
 
-void LfRfidAppSceneReadSuccess::on_enter(LfRfidApp* app, bool need_restore) {
+void LfRfidAppSceneReadSuccess::on_enter(LfRfidApp* app, bool /* need_restore */) {
     string_init(string[0]);
     string_init(string[1]);
     string_init(string[2]);
diff --git a/applications/lfrfid/scene/lfrfid_app_scene_read_success.h b/applications/lfrfid/scene/lfrfid_app_scene_read_success.h
index e2c182ea..ac0e3c1b 100644
--- a/applications/lfrfid/scene/lfrfid_app_scene_read_success.h
+++ b/applications/lfrfid/scene/lfrfid_app_scene_read_success.h
@@ -12,4 +12,4 @@ private:
     static void more_callback(void* context);
 
     string_t string[3];
-};
\ No newline at end of file
+};
diff --git a/applications/lfrfid/scene/lfrfid_app_scene_retry_confirm.cpp b/applications/lfrfid/scene/lfrfid_app_scene_retry_confirm.cpp
index 092a5f02..e62b91bd 100644
--- a/applications/lfrfid/scene/lfrfid_app_scene_retry_confirm.cpp
+++ b/applications/lfrfid/scene/lfrfid_app_scene_retry_confirm.cpp
@@ -3,7 +3,7 @@
 #include "../view/elements/icon_element.h"
 #include "../view/elements/string_element.h"
 
-void LfRfidAppSceneRetryConfirm::on_enter(LfRfidApp* app, bool need_restore) {
+void LfRfidAppSceneRetryConfirm::on_enter(LfRfidApp* app, bool /* need_restore */) {
     auto container = app->view_controller.get<ContainerVM>();
 
     auto button = container->add<ButtonElement>();
diff --git a/applications/lfrfid/scene/lfrfid_app_scene_retry_confirm.h b/applications/lfrfid/scene/lfrfid_app_scene_retry_confirm.h
index af2373f0..01b7329c 100644
--- a/applications/lfrfid/scene/lfrfid_app_scene_retry_confirm.h
+++ b/applications/lfrfid/scene/lfrfid_app_scene_retry_confirm.h
@@ -10,4 +10,4 @@ public:
 private:
     static void exit_callback(void* context);
     static void stay_callback(void* context);
-};
\ No newline at end of file
+};
diff --git a/applications/lfrfid/scene/lfrfid_app_scene_save_data.h b/applications/lfrfid/scene/lfrfid_app_scene_save_data.h
index d735fba1..6458ae64 100644
--- a/applications/lfrfid/scene/lfrfid_app_scene_save_data.h
+++ b/applications/lfrfid/scene/lfrfid_app_scene_save_data.h
@@ -30,4 +30,4 @@ private:
         0xBB,
         0xBB,
     };
-};
\ No newline at end of file
+};
diff --git a/applications/lfrfid/scene/lfrfid_app_scene_save_name.cpp b/applications/lfrfid/scene/lfrfid_app_scene_save_name.cpp
index f755f0e3..d460724e 100644
--- a/applications/lfrfid/scene/lfrfid_app_scene_save_name.cpp
+++ b/applications/lfrfid/scene/lfrfid_app_scene_save_name.cpp
@@ -1,7 +1,7 @@
 #include "lfrfid_app_scene_save_name.h"
 #include <lib/toolbox/random_name.h>
 
-void LfRfidAppSceneSaveName::on_enter(LfRfidApp* app, bool need_restore) {
+void LfRfidAppSceneSaveName::on_enter(LfRfidApp* app, bool /* need_restore */) {
     const char* key_name = app->worker.key.get_name();
 
     bool key_name_empty = !strcmp(key_name, "");
diff --git a/applications/lfrfid/scene/lfrfid_app_scene_save_name.h b/applications/lfrfid/scene/lfrfid_app_scene_save_name.h
index 39201c34..ced42cc0 100644
--- a/applications/lfrfid/scene/lfrfid_app_scene_save_name.h
+++ b/applications/lfrfid/scene/lfrfid_app_scene_save_name.h
@@ -9,4 +9,4 @@ public:
 
 private:
     static void save_callback(void* context);
-};
\ No newline at end of file
+};
diff --git a/applications/lfrfid/scene/lfrfid_app_scene_save_success.cpp b/applications/lfrfid/scene/lfrfid_app_scene_save_success.cpp
index 184a445a..64efafa7 100644
--- a/applications/lfrfid/scene/lfrfid_app_scene_save_success.cpp
+++ b/applications/lfrfid/scene/lfrfid_app_scene_save_success.cpp
@@ -3,7 +3,7 @@
 #include <dolphin/dolphin.h>
 #include <stdint.h>
 
-void LfRfidAppSceneSaveSuccess::on_enter(LfRfidApp* app, bool need_restore) {
+void LfRfidAppSceneSaveSuccess::on_enter(LfRfidApp* app, bool /* need_restore */) {
     auto popup = app->view_controller.get<PopupVM>();
 
     DOLPHIN_DEED(DolphinDeedRfidSave);
diff --git a/applications/lfrfid/scene/lfrfid_app_scene_save_success.h b/applications/lfrfid/scene/lfrfid_app_scene_save_success.h
index 36aebf3e..62273a76 100644
--- a/applications/lfrfid/scene/lfrfid_app_scene_save_success.h
+++ b/applications/lfrfid/scene/lfrfid_app_scene_save_success.h
@@ -9,4 +9,4 @@ public:
 
 private:
     static void timeout_callback(void* context);
-};
\ No newline at end of file
+};
diff --git a/applications/lfrfid/scene/lfrfid_app_scene_save_type.h b/applications/lfrfid/scene/lfrfid_app_scene_save_type.h
index 7e57a93d..1f6f6d74 100644
--- a/applications/lfrfid/scene/lfrfid_app_scene_save_type.h
+++ b/applications/lfrfid/scene/lfrfid_app_scene_save_type.h
@@ -12,4 +12,4 @@ private:
     uint32_t submenu_item_selected = 0;
     static const uint8_t keys_count = static_cast<uint8_t>(LfrfidKeyType::KeyI40134);
     string_t submenu_name[keys_count + 1];
-};
\ No newline at end of file
+};
diff --git a/applications/lfrfid/scene/lfrfid_app_scene_saved_info.cpp b/applications/lfrfid/scene/lfrfid_app_scene_saved_info.cpp
index b054e141..73c9a403 100644
--- a/applications/lfrfid/scene/lfrfid_app_scene_saved_info.cpp
+++ b/applications/lfrfid/scene/lfrfid_app_scene_saved_info.cpp
@@ -3,7 +3,7 @@
 #include "../view/elements/icon_element.h"
 #include "../view/elements/string_element.h"
 
-void LfRfidAppSceneSavedInfo::on_enter(LfRfidApp* app, bool need_restore) {
+void LfRfidAppSceneSavedInfo::on_enter(LfRfidApp* app, bool /* need_restore */) {
     string_init(string_data);
     string_init(string_decrypted);
 
@@ -59,10 +59,8 @@ void LfRfidAppSceneSavedInfo::on_enter(LfRfidApp* app, bool need_restore) {
     app->view_controller.switch_to<ContainerVM>();
 }
 
-bool LfRfidAppSceneSavedInfo::on_event(LfRfidApp* app, LfRfidApp::Event* event) {
-    bool consumed = false;
-
-    return consumed;
+bool LfRfidAppSceneSavedInfo::on_event(LfRfidApp* /* app */, LfRfidApp::Event* /* event */) {
+    return false;
 }
 
 void LfRfidAppSceneSavedInfo::on_exit(LfRfidApp* app) {
diff --git a/applications/lfrfid/scene/lfrfid_app_scene_saved_info.h b/applications/lfrfid/scene/lfrfid_app_scene_saved_info.h
index ec15c6dc..5aa33e8a 100644
--- a/applications/lfrfid/scene/lfrfid_app_scene_saved_info.h
+++ b/applications/lfrfid/scene/lfrfid_app_scene_saved_info.h
@@ -12,4 +12,4 @@ private:
 
     string_t string_data;
     string_t string_decrypted;
-};
\ No newline at end of file
+};
diff --git a/applications/lfrfid/scene/lfrfid_app_scene_saved_key_menu.h b/applications/lfrfid/scene/lfrfid_app_scene_saved_key_menu.h
index b3ad10ec..69a6e5e5 100644
--- a/applications/lfrfid/scene/lfrfid_app_scene_saved_key_menu.h
+++ b/applications/lfrfid/scene/lfrfid_app_scene_saved_key_menu.h
@@ -10,4 +10,4 @@ public:
 private:
     static void submenu_callback(void* context, uint32_t index);
     uint32_t submenu_item_selected = 0;
-};
\ No newline at end of file
+};
diff --git a/applications/lfrfid/scene/lfrfid_app_scene_select_key.cpp b/applications/lfrfid/scene/lfrfid_app_scene_select_key.cpp
index d376056b..6d5df73c 100644
--- a/applications/lfrfid/scene/lfrfid_app_scene_select_key.cpp
+++ b/applications/lfrfid/scene/lfrfid_app_scene_select_key.cpp
@@ -8,11 +8,9 @@ void LfRfidAppSceneSelectKey::on_enter(LfRfidApp* app, bool need_restore) {
     }
 }
 
-bool LfRfidAppSceneSelectKey::on_event(LfRfidApp* app, LfRfidApp::Event* event) {
-    bool consumed = false;
-
-    return consumed;
+bool LfRfidAppSceneSelectKey::on_event(LfRfidApp* /* app */, LfRfidApp::Event* /* event */) {
+    return false;
 }
 
-void LfRfidAppSceneSelectKey::on_exit(LfRfidApp* app) {
-}
\ No newline at end of file
+void LfRfidAppSceneSelectKey::on_exit(LfRfidApp* /* app */) {
+}
diff --git a/applications/lfrfid/scene/lfrfid_app_scene_select_key.h b/applications/lfrfid/scene/lfrfid_app_scene_select_key.h
index 10f11c61..be565a91 100644
--- a/applications/lfrfid/scene/lfrfid_app_scene_select_key.h
+++ b/applications/lfrfid/scene/lfrfid_app_scene_select_key.h
@@ -6,4 +6,4 @@ public:
     void on_enter(LfRfidApp* app, bool need_restore) final;
     bool on_event(LfRfidApp* app, LfRfidApp::Event* event) final;
     void on_exit(LfRfidApp* app) final;
-};
\ No newline at end of file
+};
diff --git a/applications/lfrfid/scene/lfrfid_app_scene_start.h b/applications/lfrfid/scene/lfrfid_app_scene_start.h
index 3f48db70..255590d6 100644
--- a/applications/lfrfid/scene/lfrfid_app_scene_start.h
+++ b/applications/lfrfid/scene/lfrfid_app_scene_start.h
@@ -10,4 +10,4 @@ public:
 private:
     static void submenu_callback(void* context, uint32_t index);
     uint32_t submenu_item_selected = 0;
-};
\ No newline at end of file
+};
diff --git a/applications/lfrfid/scene/lfrfid_app_scene_write.cpp b/applications/lfrfid/scene/lfrfid_app_scene_write.cpp
index 24f9fd0c..d6c9e9f4 100644
--- a/applications/lfrfid/scene/lfrfid_app_scene_write.cpp
+++ b/applications/lfrfid/scene/lfrfid_app_scene_write.cpp
@@ -1,6 +1,6 @@
 #include "lfrfid_app_scene_write.h"
 
-void LfRfidAppSceneWrite::on_enter(LfRfidApp* app, bool need_restore) {
+void LfRfidAppSceneWrite::on_enter(LfRfidApp* app, bool /* need_restore */) {
     card_not_supported = false;
     string_init(data_string);
 
diff --git a/applications/lfrfid/scene/lfrfid_app_scene_write.h b/applications/lfrfid/scene/lfrfid_app_scene_write.h
index 603f59d8..3abadeba 100644
--- a/applications/lfrfid/scene/lfrfid_app_scene_write.h
+++ b/applications/lfrfid/scene/lfrfid_app_scene_write.h
@@ -10,4 +10,4 @@ public:
 private:
     string_t data_string;
     bool card_not_supported;
-};
\ No newline at end of file
+};
diff --git a/applications/lfrfid/scene/lfrfid_app_scene_write_success.cpp b/applications/lfrfid/scene/lfrfid_app_scene_write_success.cpp
index 0539e623..3cf00183 100644
--- a/applications/lfrfid/scene/lfrfid_app_scene_write_success.cpp
+++ b/applications/lfrfid/scene/lfrfid_app_scene_write_success.cpp
@@ -1,6 +1,6 @@
 #include "lfrfid_app_scene_write_success.h"
 
-void LfRfidAppSceneWriteSuccess::on_enter(LfRfidApp* app, bool need_restore) {
+void LfRfidAppSceneWriteSuccess::on_enter(LfRfidApp* app, bool /* need_restore */) {
     auto popup = app->view_controller.get<PopupVM>();
     popup->set_header("Successfully\nwritten!", 94, 3, AlignCenter, AlignTop);
     popup->set_icon(0, 6, &I_RFIDDolphinSuccess_108x57);
diff --git a/applications/lfrfid/scene/lfrfid_app_scene_write_success.h b/applications/lfrfid/scene/lfrfid_app_scene_write_success.h
index 94b8efc1..4ac9f089 100644
--- a/applications/lfrfid/scene/lfrfid_app_scene_write_success.h
+++ b/applications/lfrfid/scene/lfrfid_app_scene_write_success.h
@@ -9,4 +9,4 @@ public:
 
 private:
     static void timeout_callback(void* context);
-};
\ No newline at end of file
+};
diff --git a/applications/lfrfid/view/container_vm.cpp b/applications/lfrfid/view/container_vm.cpp
index 8c0e72e2..3c01ba30 100644
--- a/applications/lfrfid/view/container_vm.cpp
+++ b/applications/lfrfid/view/container_vm.cpp
@@ -112,4 +112,4 @@ bool ContainerVM::view_input_callback(InputEvent* event, void* context) {
 
 template StringElement* ContainerVM::add<StringElement>();
 template IconElement* ContainerVM::add<IconElement>();
-template ButtonElement* ContainerVM::add<ButtonElement>();
\ No newline at end of file
+template ButtonElement* ContainerVM::add<ButtonElement>();
diff --git a/applications/lfrfid/view/elements/generic_element.h b/applications/lfrfid/view/elements/generic_element.h
index 269373f1..f5a58b2d 100644
--- a/applications/lfrfid/view/elements/generic_element.h
+++ b/applications/lfrfid/view/elements/generic_element.h
@@ -18,4 +18,4 @@ public:
 
 private:
     View* view = nullptr;
-};
\ No newline at end of file
+};
diff --git a/applications/lfrfid/view/elements/icon_element.cpp b/applications/lfrfid/view/elements/icon_element.cpp
index e4cb19ad..0b6fba7d 100644
--- a/applications/lfrfid/view/elements/icon_element.cpp
+++ b/applications/lfrfid/view/elements/icon_element.cpp
@@ -12,7 +12,7 @@ void IconElement::draw(Canvas* canvas) {
     }
 }
 
-bool IconElement::input(InputEvent* event) {
+bool IconElement::input(InputEvent* /* event */) {
     return false;
 }
 
diff --git a/applications/lfrfid/view/elements/string_element.cpp b/applications/lfrfid/view/elements/string_element.cpp
index 028bd7fd..44c11e01 100644
--- a/applications/lfrfid/view/elements/string_element.cpp
+++ b/applications/lfrfid/view/elements/string_element.cpp
@@ -23,7 +23,7 @@ void StringElement::draw(Canvas* canvas) {
     }
 }
 
-bool StringElement::input(InputEvent* event) {
+bool StringElement::input(InputEvent* /* event */) {
     return false;
 }
 
@@ -44,4 +44,4 @@ void StringElement::set_text(
     vertical = _vertical;
     font = _font;
     unlock_model(true);
-}
\ No newline at end of file
+}
diff --git a/applications/lfrfid_debug/lfrfid_debug_app.cpp b/applications/lfrfid_debug/lfrfid_debug_app.cpp
index 5de1de71..9cd9dcad 100644
--- a/applications/lfrfid_debug/lfrfid_debug_app.cpp
+++ b/applications/lfrfid_debug/lfrfid_debug_app.cpp
@@ -13,4 +13,4 @@ void LfRfidDebugApp::run() {
     scene_controller.add_scene(SceneType::Start, new LfRfidDebugAppSceneStart());
     scene_controller.add_scene(SceneType::TuneScene, new LfRfidDebugAppSceneTune());
     scene_controller.process(100);
-}
\ No newline at end of file
+}
diff --git a/applications/lfrfid_debug/lfrfid_debug_app_launcher.cpp b/applications/lfrfid_debug/lfrfid_debug_app_launcher.cpp
index 0ee458f4..4551a17c 100644
--- a/applications/lfrfid_debug/lfrfid_debug_app_launcher.cpp
+++ b/applications/lfrfid_debug/lfrfid_debug_app_launcher.cpp
@@ -2,6 +2,7 @@
 
 // app enter function
 extern "C" int32_t lfrfid_debug_app(void* p) {
+    UNUSED(p);
     LfRfidDebugApp* app = new LfRfidDebugApp();
     app->run();
     delete app;
diff --git a/applications/lfrfid_debug/scene/lfrfid_debug_app_scene_start.h b/applications/lfrfid_debug/scene/lfrfid_debug_app_scene_start.h
index b8f811d0..7fc0b07d 100644
--- a/applications/lfrfid_debug/scene/lfrfid_debug_app_scene_start.h
+++ b/applications/lfrfid_debug/scene/lfrfid_debug_app_scene_start.h
@@ -10,4 +10,4 @@ public:
 private:
     void submenu_callback(void* context, uint32_t index);
     uint32_t submenu_item_selected = 0;
-};
\ No newline at end of file
+};
diff --git a/applications/lfrfid_debug/scene/lfrfid_debug_app_scene_tune.cpp b/applications/lfrfid_debug/scene/lfrfid_debug_app_scene_tune.cpp
index 53679402..4b627649 100644
--- a/applications/lfrfid_debug/scene/lfrfid_debug_app_scene_tune.cpp
+++ b/applications/lfrfid_debug/scene/lfrfid_debug_app_scene_tune.cpp
@@ -2,10 +2,11 @@
 #include <furi_hal.h>
 
 static void comparator_trigger_callback(bool level, void* comp_ctx) {
+    UNUSED(comp_ctx);
     furi_hal_gpio_write(&gpio_ext_pa7, !level);
 }
 
-void LfRfidDebugAppSceneTune::on_enter(LfRfidDebugApp* app, bool need_restore) {
+void LfRfidDebugAppSceneTune::on_enter(LfRfidDebugApp* app, bool /* need_restore */) {
     app->view_controller.switch_to<LfRfidViewTuneVM>();
     furi_hal_gpio_init_simple(&gpio_ext_pa7, GpioModeOutputPushPull);
 
@@ -17,7 +18,7 @@ void LfRfidDebugAppSceneTune::on_enter(LfRfidDebugApp* app, bool need_restore) {
     furi_hal_rfid_tim_read_start();
 }
 
-bool LfRfidDebugAppSceneTune::on_event(LfRfidDebugApp* app, LfRfidDebugApp::Event* event) {
+bool LfRfidDebugAppSceneTune::on_event(LfRfidDebugApp* app, LfRfidDebugApp::Event* /* event */) {
     bool consumed = false;
 
     LfRfidViewTuneVM* tune = app->view_controller;
@@ -30,7 +31,7 @@ bool LfRfidDebugAppSceneTune::on_event(LfRfidDebugApp* app, LfRfidDebugApp::Even
     return consumed;
 }
 
-void LfRfidDebugAppSceneTune::on_exit(LfRfidDebugApp* app) {
+void LfRfidDebugAppSceneTune::on_exit(LfRfidDebugApp* /* app */) {
     furi_hal_rfid_comp_stop();
     furi_hal_rfid_comp_set_callback(NULL, NULL);
 
diff --git a/applications/lfrfid_debug/scene/lfrfid_debug_app_scene_tune.h b/applications/lfrfid_debug/scene/lfrfid_debug_app_scene_tune.h
index 94dfea97..53399efc 100644
--- a/applications/lfrfid_debug/scene/lfrfid_debug_app_scene_tune.h
+++ b/applications/lfrfid_debug/scene/lfrfid_debug_app_scene_tune.h
@@ -6,4 +6,4 @@ public:
     void on_enter(LfRfidDebugApp* app, bool need_restore) final;
     bool on_event(LfRfidDebugApp* app, LfRfidDebugApp::Event* event) final;
     void on_exit(LfRfidDebugApp* app) final;
-};
\ No newline at end of file
+};
diff --git a/applications/lfrfid_debug/view_modules/lfrfid_view_tune_vm.cpp b/applications/lfrfid_debug/view_modules/lfrfid_view_tune_vm.cpp
index 3039517e..5c244b92 100644
--- a/applications/lfrfid_debug/view_modules/lfrfid_view_tune_vm.cpp
+++ b/applications/lfrfid_debug/view_modules/lfrfid_view_tune_vm.cpp
@@ -29,6 +29,8 @@ void LfRfidViewTuneVM::view_draw_callback(Canvas* canvas, void* _model) {
 
     constexpr uint8_t buffer_size = 128;
     char buffer[buffer_size + 1];
+    double freq = ((float)SystemCoreClock / ((float)model->ARR + 1));
+    double duty = ((float)model->CCR + 1) / ((float)model->ARR + 1) * 100.0f;
     snprintf(
         buffer,
         buffer_size,
@@ -38,10 +40,10 @@ void LfRfidViewTuneVM::view_draw_callback(Canvas* canvas, void* _model) {
         "duty = %.4f",
         model->pos == 0 ? ">" : "",
         model->ARR,
-        (float)SystemCoreClock / ((float)model->ARR + 1),
+        freq,
         model->pos == 1 ? ">" : "",
         model->CCR,
-        ((float)model->CCR + 1) / ((float)model->ARR + 1) * 100.0f);
+        duty);
     elements_multiline_text_aligned(canvas, 2, 2, AlignLeft, AlignTop, buffer);
 }
 
diff --git a/applications/loader/loader.c b/applications/loader/loader.c
index 43e275ab..e5d59702 100644
--- a/applications/loader/loader.c
+++ b/applications/loader/loader.c
@@ -39,6 +39,7 @@ static bool
 }
 
 static void loader_menu_callback(void* _ctx, uint32_t index) {
+    UNUSED(index);
     const FlipperApplication* application = _ctx;
 
     furi_assert(application->app);
@@ -53,6 +54,7 @@ static void loader_menu_callback(void* _ctx, uint32_t index) {
 }
 
 static void loader_submenu_callback(void* context, uint32_t index) {
+    UNUSED(index);
     uint32_t view_id = (uint32_t)context;
     view_dispatcher_switch_to_view(loader_instance->view_dispatcher, view_id);
 }
@@ -101,6 +103,7 @@ const FlipperApplication* loader_find_application_by_name(const char* name) {
 }
 
 void loader_cli_open(Cli* cli, string_t args, Loader* instance) {
+    UNUSED(cli);
     if(loader_is_locked(instance)) {
         printf("Can't start, furi application is running");
         return;
@@ -139,6 +142,9 @@ void loader_cli_open(Cli* cli, string_t args, Loader* instance) {
 }
 
 void loader_cli_list(Cli* cli, string_t args, Loader* instance) {
+    UNUSED(cli);
+    UNUSED(args);
+    UNUSED(instance);
     printf("Applications:\r\n");
     for(size_t i = 0; i < FLIPPER_APPS_COUNT; i++) {
         printf("\t%s\r\n", FLIPPER_APPS[i].name);
@@ -187,6 +193,7 @@ static void loader_cli(Cli* cli, string_t args, void* _ctx) {
 }
 
 LoaderStatus loader_start(Loader* instance, const char* name, const char* args) {
+    UNUSED(instance);
     furi_assert(name);
 
     const FlipperApplication* application = loader_find_application_by_name(name);
@@ -265,6 +272,7 @@ static void loader_thread_state_callback(FuriThreadState thread_state, void* con
 }
 
 static uint32_t loader_hide_menu(void* context) {
+    UNUSED(context);
     return VIEW_NONE;
 }
 
@@ -445,6 +453,7 @@ void loader_update_menu() {
 }
 
 int32_t loader_srv(void* p) {
+    UNUSED(p);
     FURI_LOG_I(TAG, "Executing system start hooks");
     for(size_t i = 0; i < FLIPPER_ON_SYSTEM_START_COUNT; i++) {
         FLIPPER_ON_SYSTEM_START[i]();
diff --git a/applications/music_player/music_player.c b/applications/music_player/music_player.c
index 4f8813d6..73f4bd2c 100644
--- a/applications/music_player/music_player.c
+++ b/applications/music_player/music_player.c
@@ -2,132 +2,93 @@
 #include <furi_hal.h>
 
 #include <gui/gui.h>
-#include <input/input.h>
+#include <dialogs/dialogs.h>
+#include "music_player_worker.h"
 
-// TODO float note freq
-typedef enum {
-    // Delay
-    N = 0,
-    // Octave 4
-    B4 = 494,
-    // Octave 5
-    C5 = 523,
-    D5 = 587,
-    E5 = 659,
-    F_5 = 740,
-    G5 = 784,
-    A5 = 880,
-    B5 = 988,
-    // Octave 6
-    C6 = 1046,
-    D6 = 1175,
-    E6 = 1319,
-} MelodyEventNote;
+#define TAG "MusicPlayer"
 
-typedef enum {
-    L1 = 1,
-    L2 = 2,
-    L4 = 4,
-    L8 = 8,
-    L16 = 16,
-    L32 = 32,
-    L64 = 64,
-    L128 = 128,
-} MelodyEventLength;
+#define MUSIC_PLAYER_APP_PATH_FOLDER "/any/music_player"
+#define MUSIC_PLAYER_APP_EXTENSION "*"
+
+#define MUSIC_PLAYER_SEMITONE_HISTORY_SIZE 4
 
 typedef struct {
-    MelodyEventNote note;
-    MelodyEventLength length;
-} MelodyEventRecord;
+    uint8_t semitone_history[MUSIC_PLAYER_SEMITONE_HISTORY_SIZE];
+    uint8_t duration_history[MUSIC_PLAYER_SEMITONE_HISTORY_SIZE];
+
+    uint8_t volume;
+    uint8_t semitone;
+    uint8_t dots;
+    uint8_t duration;
+    float position;
+} MusicPlayerModel;
 
 typedef struct {
-    const MelodyEventRecord* record;
-    int8_t loop_count;
-} SongPattern;
+    MusicPlayerModel* model;
+    osMutexId_t* model_mutex;
 
-const MelodyEventRecord melody_start[] = {
-    {E6, L8}, {N, L8},   {E5, L8}, {B5, L8},  {N, L4},  {E5, L8},  {A5, L8},  {G5, L8}, {A5, L8},
-    {E5, L8}, {B5, L8},  {N, L8},  {G5, L8},  {A5, L8}, {D6, L8},  {N, L4},   {D5, L8}, {B5, L8},
-    {N, L4},  {D5, L8},  {A5, L8}, {G5, L8},  {A5, L8}, {D5, L8},  {F_5, L8}, {N, L8},  {G5, L8},
-    {A5, L8}, {D6, L8},  {N, L4},  {F_5, L8}, {B5, L8}, {N, L4},   {F_5, L8}, {D6, L8}, {C6, L8},
-    {B5, L8}, {F_5, L8}, {A5, L8}, {N, L8},   {G5, L8}, {F_5, L8}, {E5, L8},  {N, L8},  {C5, L8},
-    {E5, L8}, {B5, L8},  {B4, L8}, {C5, L8},  {D5, L8}, {D6, L8},  {C6, L8},  {B5, L8}, {F_5, L8},
-    {A5, L8}, {N, L8},   {G5, L8}, {A5, L8},  {E6, L8}};
+    osMessageQueueId_t input_queue;
 
-const MelodyEventRecord melody_loop[] = {
-    {N, L4},   {E5, L8}, {B5, L8},  {N, L4},  {E5, L8},  {A5, L8},  {G5, L8}, {A5, L8},  {E5, L8},
-    {B5, L8},  {N, L8},  {G5, L8},  {A5, L8}, {D6, L8},  {N, L4},   {D5, L8}, {B5, L8},  {N, L4},
-    {D5, L8},  {A5, L8}, {G5, L8},  {A5, L8}, {D5, L8},  {F_5, L8}, {N, L8},  {G5, L8},  {A5, L8},
-    {D6, L8},  {N, L4},  {F_5, L8}, {B5, L8}, {N, L4},   {F_5, L8}, {D6, L8}, {C6, L8},  {B5, L8},
-    {F_5, L8}, {A5, L8}, {N, L8},   {G5, L8}, {F_5, L8}, {E5, L8},  {N, L8},  {C5, L8},  {E5, L8},
-    {B5, L8},  {B4, L8}, {C5, L8},  {D5, L8}, {D6, L8},  {C6, L8},  {B5, L8}, {F_5, L8}, {A5, L8},
-    {N, L8},   {G5, L8}, {A5, L8},  {E6, L8}};
+    ViewPort* view_port;
+    Gui* gui;
 
-const MelodyEventRecord melody_chords_1bar[] = {
-    {E6, L8},   {N, L8},    {B4, L128}, {E5, L128}, {B4, L128}, {E5, L128}, {B4, L128}, {E5, L128},
-    {B4, L128}, {E5, L128}, {B4, L128}, {E5, L128}, {B4, L128}, {E5, L128}, {B4, L128}, {E5, L128},
-    {B4, L128}, {E5, L128}, {B5, L8},   {N, L4},    {B4, L128}, {E5, L128}, {B4, L128}, {E5, L128},
-    {B4, L128}, {E5, L128}, {B4, L128}, {E5, L128}, {B4, L128}, {E5, L128}, {B4, L128}, {E5, L128},
-    {B4, L128}, {E5, L128}, {B4, L128}, {E5, L128}, {A5, L8}};
+    MusicPlayerWorker* worker;
+} MusicPlayer;
 
-const SongPattern song[] = {{melody_start, 1}, {melody_loop, -1}};
+static const float MUSIC_PLAYER_VOLUMES[] = {0, .25, .5, .75, 1};
 
-typedef enum {
-    EventTypeTick,
-    EventTypeKey,
-    EventTypeNote,
-    // add your events type
-} MusicDemoEventType;
+static const char* semitone_to_note(int8_t semitone) {
+    switch(semitone) {
+    case 0:
+        return "C";
+    case 1:
+        return "C#";
+    case 2:
+        return "D";
+    case 3:
+        return "D#";
+    case 4:
+        return "E";
+    case 5:
+        return "F";
+    case 6:
+        return "F#";
+    case 7:
+        return "G";
+    case 8:
+        return "G#";
+    case 9:
+        return "A";
+    case 10:
+        return "A#";
+    case 11:
+        return "B";
+    default:
+        return "--";
+    }
+}
 
-typedef struct {
-    union {
-        InputEvent input;
-        const MelodyEventRecord* note_record;
-    } value;
-    MusicDemoEventType type;
-} MusicDemoEvent;
-
-typedef struct {
-    ValueMutex* state_mutex;
-    osMessageQueueId_t event_queue;
-
-} MusicDemoContext;
-
-#define note_stack_size 4
-typedef struct {
-    // describe state here
-    const MelodyEventRecord* note_record;
-    const MelodyEventRecord* note_stack[note_stack_size];
-    uint8_t volume_id;
-    uint8_t volume_id_max;
-} State;
-
-const float volumes[] = {0, .25, .5, .75, 1};
-
-bool is_white_note(const MelodyEventRecord* note_record, uint8_t id) {
-    if(note_record == NULL) return false;
-
-    switch(note_record->note) {
-    case C5:
-    case C6:
+static bool is_white_note(uint8_t semitone, uint8_t id) {
+    switch(semitone) {
+    case 0:
         if(id == 0) return true;
         break;
-    case D5:
-    case D6:
+    case 2:
         if(id == 1) return true;
         break;
-    case E5:
-    case E6:
+    case 4:
         if(id == 2) return true;
         break;
-    case G5:
+    case 5:
+        if(id == 3) return true;
+        break;
+    case 7:
         if(id == 4) return true;
         break;
-    case A5:
+    case 9:
         if(id == 5) return true;
         break;
-    case B4:
-    case B5:
+    case 11:
         if(id == 6) return true;
         break;
     default:
@@ -137,13 +98,23 @@ bool is_white_note(const MelodyEventRecord* note_record, uint8_t id) {
     return false;
 }
 
-bool is_black_note(const MelodyEventRecord* note_record, uint8_t id) {
-    if(note_record == NULL) return false;
-
-    switch(note_record->note) {
-    case F_5:
+static bool is_black_note(uint8_t semitone, uint8_t id) {
+    switch(semitone) {
+    case 1:
+        if(id == 0) return true;
+        break;
+    case 3:
+        if(id == 1) return true;
+        break;
+    case 6:
         if(id == 3) return true;
         break;
+    case 8:
+        if(id == 4) return true;
+        break;
+    case 10:
+        if(id == 5) return true;
+        break;
     default:
         break;
     }
@@ -151,87 +122,9 @@ bool is_black_note(const MelodyEventRecord* note_record, uint8_t id) {
     return false;
 }
 
-const char* get_note_name(const MelodyEventRecord* note_record) {
-    if(note_record == NULL) return "";
-
-    switch(note_record->note) {
-    case N:
-        return "---";
-        break;
-    case B4:
-        return "B4-";
-        break;
-    case C5:
-        return "C5-";
-        break;
-    case D5:
-        return "D5-";
-        break;
-    case E5:
-        return "E5-";
-        break;
-    case F_5:
-        return "F#5";
-        break;
-    case G5:
-        return "G5-";
-        break;
-    case A5:
-        return "A5-";
-        break;
-    case B5:
-        return "B5-";
-        break;
-    case C6:
-        return "C6-";
-        break;
-    case D6:
-        return "D6-";
-        break;
-    case E6:
-        return "E6-";
-        break;
-    default:
-        return "UNK";
-        break;
-    }
-}
-const char* get_note_len_name(const MelodyEventRecord* note_record) {
-    if(note_record == NULL) return "";
-
-    switch(note_record->length) {
-    case L1:
-        return "1-";
-        break;
-    case L2:
-        return "2-";
-        break;
-    case L4:
-        return "4-";
-        break;
-    case L8:
-        return "8-";
-        break;
-    case L16:
-        return "16";
-        break;
-    case L32:
-        return "32";
-        break;
-    case L64:
-        return "64";
-        break;
-    case L128:
-        return "1+";
-        break;
-    default:
-        return "--";
-        break;
-    }
-}
-
 static void render_callback(Canvas* canvas, void* ctx) {
-    State* state = (State*)acquire_mutex((ValueMutex*)ctx, 25);
+    MusicPlayer* music_player = ctx;
+    furi_check(osMutexAcquire(music_player->model_mutex, osWaitForever) == osOK);
 
     canvas_clear(canvas);
     canvas_set_color(canvas, ColorBlack);
@@ -250,7 +143,7 @@ static void render_callback(Canvas* canvas, void* ctx) {
 
     // white keys
     for(size_t i = 0; i < 7; i++) {
-        if(is_white_note(state->note_record, i)) {
+        if(is_white_note(music_player->model->semitone, i)) {
             canvas_draw_box(canvas, x_pos + white_w * i, y_pos, white_w + 1, white_h);
         } else {
             canvas_draw_frame(canvas, x_pos + white_w * i, y_pos, white_w + 1, white_h);
@@ -264,7 +157,7 @@ static void render_callback(Canvas* canvas, void* ctx) {
             canvas_draw_box(
                 canvas, x_pos + white_w * i + black_x, y_pos + black_y, black_w + 1, black_h);
             canvas_set_color(canvas, ColorBlack);
-            if(is_black_note(state->note_record, i)) {
+            if(is_black_note(music_player->model->semitone, i)) {
                 canvas_draw_box(
                     canvas, x_pos + white_w * i + black_x, y_pos + black_y, black_w + 1, black_h);
             } else {
@@ -277,7 +170,8 @@ static void render_callback(Canvas* canvas, void* ctx) {
     // volume view_port
     x_pos = 124;
     y_pos = 0;
-    const uint8_t volume_h = (64 / (state->volume_id_max - 1)) * state->volume_id;
+    const uint8_t volume_h =
+        (64 / (COUNT_OF(MUSIC_PLAYER_VOLUMES) - 1)) * music_player->model->volume;
     canvas_draw_frame(canvas, x_pos, y_pos, 4, 64);
     canvas_draw_box(canvas, x_pos, y_pos + (64 - volume_h), 4, volume_h);
 
@@ -289,171 +183,175 @@ static void render_callback(Canvas* canvas, void* ctx) {
     canvas_draw_frame(canvas, x_pos, y_pos, 49, 64);
     canvas_draw_line(canvas, x_pos + 28, 0, x_pos + 28, 64);
 
-    for(uint8_t i = 0; i < note_stack_size; i++) {
+    char duration_text[16];
+    for(uint8_t i = 0; i < MUSIC_PLAYER_SEMITONE_HISTORY_SIZE; i++) {
+        if(music_player->model->duration_history[i] == 0xFF) {
+            snprintf(duration_text, 15, "--");
+        } else {
+            snprintf(duration_text, 15, "%d", music_player->model->duration_history[i]);
+        }
+
         if(i == 0) {
             canvas_draw_box(canvas, x_pos, y_pos + 48, 49, 16);
             canvas_set_color(canvas, ColorWhite);
         } else {
             canvas_set_color(canvas, ColorBlack);
         }
-        canvas_draw_str(canvas, x_pos + 4, 64 - 16 * i - 3, get_note_name(state->note_stack[i]));
         canvas_draw_str(
-            canvas, x_pos + 31, 64 - 16 * i - 3, get_note_len_name(state->note_stack[i]));
+            canvas,
+            x_pos + 4,
+            64 - 16 * i - 3,
+            semitone_to_note(music_player->model->semitone_history[i]));
+        canvas_draw_str(canvas, x_pos + 31, 64 - 16 * i - 3, duration_text);
         canvas_draw_line(canvas, x_pos, 64 - 16 * i, x_pos + 48, 64 - 16 * i);
     }
 
-    release_mutex((ValueMutex*)ctx, state);
+    osMutexRelease(music_player->model_mutex);
 }
 
 static void input_callback(InputEvent* input_event, void* ctx) {
-    osMessageQueueId_t event_queue = ctx;
-
-    MusicDemoEvent event;
-    event.type = EventTypeKey;
-    event.value.input = *input_event;
-    osMessageQueuePut(event_queue, &event, 0, 0);
+    MusicPlayer* music_player = ctx;
+    if(input_event->type == InputTypeShort) {
+        osMessageQueuePut(music_player->input_queue, input_event, 0, 0);
+    }
 }
 
-void process_note(
-    const MelodyEventRecord* note_record,
-    float bar_length_ms,
-    MusicDemoContext* context) {
-    MusicDemoEvent event;
-    // send note event
-    event.type = EventTypeNote;
-    event.value.note_record = note_record;
-    osMessageQueuePut(context->event_queue, &event, 0, 0);
+static void music_player_worker_callback(
+    uint8_t semitone,
+    uint8_t dots,
+    uint8_t duration,
+    float position,
+    void* context) {
+    MusicPlayer* music_player = context;
+    furi_check(osMutexAcquire(music_player->model_mutex, osWaitForever) == osOK);
 
-    // read volume
-    State* state = (State*)acquire_mutex(context->state_mutex, 25);
-    float volume = volumes[state->volume_id];
-    release_mutex(context->state_mutex, state);
-
-    // play note
-    float note_delay = bar_length_ms / (float)note_record->length;
-    if(note_record->note != N) {
-        furi_hal_speaker_start(note_record->note, volume);
+    for(size_t i = 0; i < MUSIC_PLAYER_SEMITONE_HISTORY_SIZE - 1; i++) {
+        size_t r = MUSIC_PLAYER_SEMITONE_HISTORY_SIZE - 1 - i;
+        music_player->model->duration_history[r] = music_player->model->duration_history[r - 1];
+        music_player->model->semitone_history[r] = music_player->model->semitone_history[r - 1];
     }
-    furi_hal_delay_ms(note_delay);
-    furi_hal_speaker_stop();
+
+    semitone = (semitone == 0xFF) ? 0xFF : semitone % 12;
+
+    music_player->model->semitone = semitone;
+    music_player->model->dots = dots;
+    music_player->model->duration = duration;
+    music_player->model->position = position;
+
+    music_player->model->semitone_history[0] = semitone;
+    music_player->model->duration_history[0] = duration;
+
+    osMutexRelease(music_player->model_mutex);
+    view_port_update(music_player->view_port);
 }
 
-void music_player_thread(void* p) {
-    MusicDemoContext* context = (MusicDemoContext*)p;
+MusicPlayer* music_player_alloc() {
+    MusicPlayer* instance = malloc(sizeof(MusicPlayer));
 
-    const float bpm = 130.0f;
-    // 4/4
-    const float bar_length_ms = (60.0f * 1000.0f / bpm) * 4;
-    const uint16_t melody_start_events_count = sizeof(melody_start) / sizeof(melody_start[0]);
-    const uint16_t melody_loop_events_count = sizeof(melody_loop) / sizeof(melody_loop[0]);
+    instance->model = malloc(sizeof(MusicPlayerModel));
+    memset(instance->model->duration_history, 0xff, MUSIC_PLAYER_SEMITONE_HISTORY_SIZE);
+    memset(instance->model->semitone_history, 0xff, MUSIC_PLAYER_SEMITONE_HISTORY_SIZE);
+    instance->model->volume = 3;
 
-    for(size_t i = 0; i < melody_start_events_count; i++) {
-        process_note(&melody_start[i], bar_length_ms, context);
-    }
+    instance->model_mutex = osMutexNew(NULL);
 
-    while(1) {
-        for(size_t i = 0; i < melody_loop_events_count; i++) {
-            process_note(&melody_loop[i], bar_length_ms, context);
-        }
-    }
+    instance->input_queue = osMessageQueueNew(8, sizeof(InputEvent), NULL);
+
+    instance->worker = music_player_worker_alloc();
+    music_player_worker_set_volume(
+        instance->worker, MUSIC_PLAYER_VOLUMES[instance->model->volume]);
+    music_player_worker_set_callback(instance->worker, music_player_worker_callback, instance);
+
+    instance->view_port = view_port_alloc();
+    view_port_draw_callback_set(instance->view_port, render_callback, instance);
+    view_port_input_callback_set(instance->view_port, input_callback, instance);
+
+    // Open GUI and register view_port
+    instance->gui = furi_record_open("gui");
+    gui_add_view_port(instance->gui, instance->view_port, GuiLayerFullscreen);
+
+    return instance;
+}
+
+void music_player_free(MusicPlayer* instance) {
+    gui_remove_view_port(instance->gui, instance->view_port);
+    furi_record_close("gui");
+    view_port_free(instance->view_port);
+
+    music_player_worker_free(instance->worker);
+
+    osMessageQueueDelete(instance->input_queue);
+
+    osMutexDelete(instance->model_mutex);
+
+    free(instance->model);
+    free(instance);
 }
 
 int32_t music_player_app(void* p) {
-    osMessageQueueId_t event_queue = osMessageQueueNew(8, sizeof(MusicDemoEvent), NULL);
+    MusicPlayer* music_player = music_player_alloc();
 
-    State _state;
-    _state.note_record = NULL;
-    for(size_t i = 0; i < note_stack_size; i++) {
-        _state.note_stack[i] = NULL;
-    }
-    _state.volume_id = 1;
-    _state.volume_id_max = sizeof(volumes) / sizeof(volumes[0]);
+    string_t file_path;
+    string_init(file_path);
 
-    ValueMutex state_mutex;
-    if(!init_mutex(&state_mutex, &_state, sizeof(State))) {
-        printf("cannot create mutex\r\n");
-        return 255;
-    }
-
-    ViewPort* view_port = view_port_alloc();
-    view_port_draw_callback_set(view_port, render_callback, &state_mutex);
-    view_port_input_callback_set(view_port, input_callback, event_queue);
-
-    // Open GUI and register view_port
-    Gui* gui = furi_record_open("gui");
-    gui_add_view_port(gui, view_port, GuiLayerFullscreen);
-
-    // start player thread
-    // TODO change to fuirac_start
-    osThreadAttr_t player_attr = {.name = "music_player_thread", .stack_size = 512};
-    MusicDemoContext context = {.state_mutex = &state_mutex, .event_queue = event_queue};
-    osThreadId_t player = osThreadNew(music_player_thread, &context, &player_attr);
-
-    if(player == NULL) {
-        printf("cannot create player thread\r\n");
-        return 255;
-    }
-
-    MusicDemoEvent event;
-    while(1) {
-        osStatus_t event_status = osMessageQueueGet(event_queue, &event, NULL, 100);
-
-        State* state = (State*)acquire_mutex_block(&state_mutex);
-
-        if(event_status == osOK) {
-            if(event.type == EventTypeKey) {
-                // press events
-                if(event.value.input.type == InputTypeShort &&
-                   event.value.input.key == InputKeyBack) {
-                    release_mutex(&state_mutex, state);
-                    break;
-                }
-
-                if(event.value.input.type == InputTypePress &&
-                   event.value.input.key == InputKeyUp) {
-                    if(state->volume_id < state->volume_id_max - 1) state->volume_id++;
-                }
-
-                if(event.value.input.type == InputTypePress &&
-                   event.value.input.key == InputKeyDown) {
-                    if(state->volume_id > 0) state->volume_id--;
-                }
-
-                if(event.value.input.type == InputTypePress &&
-                   event.value.input.key == InputKeyLeft) {
-                }
-
-                if(event.value.input.type == InputTypePress &&
-                   event.value.input.key == InputKeyRight) {
-                }
-
-                if(event.value.input.key == InputKeyOk) {
-                }
-
-            } else if(event.type == EventTypeNote) {
-                state->note_record = event.value.note_record;
-
-                for(size_t i = note_stack_size - 1; i > 0; i--) {
-                    state->note_stack[i] = state->note_stack[i - 1];
-                }
-                state->note_stack[0] = state->note_record;
-            }
+    do {
+        if(p) {
+            string_cat_str(file_path, p);
         } else {
-            // event timeout
+            char* file_name = malloc(256);
+            DialogsApp* dialogs = furi_record_open("dialogs");
+            bool res = dialog_file_select_show(
+                dialogs,
+                MUSIC_PLAYER_APP_PATH_FOLDER,
+                MUSIC_PLAYER_APP_EXTENSION,
+                file_name,
+                255,
+                NULL);
+            furi_record_close("dialogs");
+            if(!res) {
+                FURI_LOG_E(TAG, "No file selected");
+                break;
+            }
+            string_cat_str(file_path, MUSIC_PLAYER_APP_PATH_FOLDER);
+            string_cat_str(file_path, "/");
+            string_cat_str(file_path, file_name);
+            free(file_name);
         }
 
-        view_port_update(view_port);
-        release_mutex(&state_mutex, state);
-    }
+        if(!music_player_worker_load(music_player->worker, string_get_cstr(file_path))) {
+            FURI_LOG_E(TAG, "Unable to load file");
+            break;
+        }
 
-    osThreadTerminate(player);
-    furi_hal_speaker_stop();
-    view_port_enabled_set(view_port, false);
-    gui_remove_view_port(gui, view_port);
-    furi_record_close("gui");
-    view_port_free(view_port);
-    osMessageQueueDelete(event_queue);
-    delete_mutex(&state_mutex);
+        music_player_worker_start(music_player->worker);
+
+        InputEvent input;
+        while(osMessageQueueGet(music_player->input_queue, &input, NULL, osWaitForever) == osOK) {
+            furi_check(osMutexAcquire(music_player->model_mutex, osWaitForever) == osOK);
+
+            if(input.key == InputKeyBack) {
+                osMutexRelease(music_player->model_mutex);
+                break;
+            } else if(input.key == InputKeyUp) {
+                if(music_player->model->volume < COUNT_OF(MUSIC_PLAYER_VOLUMES) - 1)
+                    music_player->model->volume++;
+                music_player_worker_set_volume(
+                    music_player->worker, MUSIC_PLAYER_VOLUMES[music_player->model->volume]);
+            } else if(input.key == InputKeyDown) {
+                if(music_player->model->volume > 0) music_player->model->volume--;
+                music_player_worker_set_volume(
+                    music_player->worker, MUSIC_PLAYER_VOLUMES[music_player->model->volume]);
+            }
+
+            osMutexRelease(music_player->model_mutex);
+            view_port_update(music_player->view_port);
+        }
+
+        music_player_worker_stop(music_player->worker);
+    } while(0);
+
+    string_clear(file_path);
+    music_player_free(music_player);
 
     return 0;
 }
diff --git a/applications/music_player/music_player_cli.c b/applications/music_player/music_player_cli.c
new file mode 100644
index 00000000..0d98101e
--- /dev/null
+++ b/applications/music_player/music_player_cli.c
@@ -0,0 +1,47 @@
+#include <furi.h>
+#include <cli/cli.h>
+#include <storage/storage.h>
+#include "music_player_worker.h"
+
+static void music_player_cli(Cli* cli, string_t args, void* context) {
+    UNUSED(context);
+    MusicPlayerWorker* music_player_worker = music_player_worker_alloc();
+    Storage* storage = furi_record_open("storage");
+
+    do {
+        if(storage_common_stat(storage, string_get_cstr(args), NULL) == FSE_OK) {
+            if(!music_player_worker_load(music_player_worker, string_get_cstr(args))) {
+                printf("Failed to open file %s\r\n", string_get_cstr(args));
+                break;
+            }
+        } else {
+            if(!music_player_worker_load_rtttl_from_string(
+                   music_player_worker, string_get_cstr(args))) {
+                printf("Argument is not a file or RTTTL\r\n");
+                break;
+            }
+        }
+
+        printf("Press CTRL+C to stop\r\n");
+        music_player_worker_start(music_player_worker);
+        while(!cli_cmd_interrupt_received(cli)) {
+            osDelay(50);
+        }
+        music_player_worker_stop(music_player_worker);
+    } while(0);
+
+    furi_record_close("storage");
+    music_player_worker_free(music_player_worker);
+}
+
+void music_player_on_system_start() {
+#ifdef SRV_CLI
+    Cli* cli = furi_record_open("cli");
+
+    cli_add_command(cli, "music_player", CliCommandFlagDefault, music_player_cli, NULL);
+
+    furi_record_close("cli");
+#else
+    UNUSED(music_player_cli);
+#endif
+}
diff --git a/applications/music_player/music_player_worker.c b/applications/music_player/music_player_worker.c
new file mode 100644
index 00000000..9a0087aa
--- /dev/null
+++ b/applications/music_player/music_player_worker.c
@@ -0,0 +1,496 @@
+#include "music_player_worker.h"
+
+#include <furi_hal.h>
+#include <furi.h>
+
+#include <storage/storage.h>
+#include <lib/flipper_format/flipper_format.h>
+
+#include <m-array.h>
+
+#define TAG "MusicPlayerWorker"
+
+#define MUSIC_PLAYER_FILETYPE "Flipper Music Format"
+#define MUSIC_PLAYER_VERSION 0
+
+#define SEMITONE_PAUSE 0xFF
+
+#define NOTE_C4 261.63f
+#define NOTE_C4_SEMITONE (4.0f * 12.0f)
+#define TWO_POW_TWELTH_ROOT 1.059463094359f
+
+typedef struct {
+    uint8_t semitone;
+    uint8_t duration;
+    uint8_t dots;
+} NoteBlock;
+
+ARRAY_DEF(NoteBlockArray, NoteBlock, M_POD_OPLIST);
+
+struct MusicPlayerWorker {
+    FuriThread* thread;
+    bool should_work;
+
+    MusicPlayerWorkerCallback callback;
+    void* callback_context;
+
+    float volume;
+    uint32_t bpm;
+    uint32_t duration;
+    uint32_t octave;
+    NoteBlockArray_t notes;
+};
+
+static int32_t music_player_worker_thread_callback(void* context) {
+    furi_assert(context);
+    MusicPlayerWorker* instance = context;
+
+    NoteBlockArray_it_t it;
+    NoteBlockArray_it(it, instance->notes);
+
+    while(instance->should_work) {
+        if(NoteBlockArray_end_p(it)) {
+            NoteBlockArray_it(it, instance->notes);
+            osDelay(10);
+        } else {
+            NoteBlock* note_block = NoteBlockArray_ref(it);
+
+            float note_from_a4 = (float)note_block->semitone - NOTE_C4_SEMITONE;
+            float frequency = NOTE_C4 * powf(TWO_POW_TWELTH_ROOT, note_from_a4);
+            float duration =
+                60.0 * osKernelGetTickFreq() * 4 / instance->bpm / note_block->duration;
+            while(note_block->dots > 0) {
+                duration += duration / 2;
+                note_block->dots--;
+            }
+            uint32_t next_tick = furi_hal_get_tick() + duration;
+            float volume = instance->volume;
+
+            if(instance->callback) {
+                instance->callback(
+                    note_block->semitone,
+                    note_block->dots,
+                    note_block->duration,
+                    0.0,
+                    instance->callback_context);
+            }
+
+            furi_hal_speaker_stop();
+            furi_hal_speaker_start(frequency, volume);
+            while(instance->should_work && furi_hal_get_tick() < next_tick) {
+                volume *= 0.9945679;
+                furi_hal_speaker_set_volume(volume);
+                furi_hal_delay_ms(2);
+            }
+            NoteBlockArray_next(it);
+        }
+    }
+
+    furi_hal_speaker_stop();
+
+    return 0;
+}
+
+MusicPlayerWorker* music_player_worker_alloc() {
+    MusicPlayerWorker* instance = malloc(sizeof(MusicPlayerWorker));
+
+    NoteBlockArray_init(instance->notes);
+
+    instance->thread = furi_thread_alloc();
+    furi_thread_set_name(instance->thread, "MusicPlayerWorker");
+    furi_thread_set_stack_size(instance->thread, 1024);
+    furi_thread_set_context(instance->thread, instance);
+    furi_thread_set_callback(instance->thread, music_player_worker_thread_callback);
+
+    return instance;
+}
+
+void music_player_worker_free(MusicPlayerWorker* instance) {
+    furi_assert(instance);
+    furi_thread_free(instance->thread);
+    NoteBlockArray_clear(instance->notes);
+    free(instance);
+}
+
+static bool is_digit(const char c) {
+    return isdigit(c) != 0;
+}
+
+static bool is_letter(const char c) {
+    return islower(c) != 0 || isupper(c) != 0;
+}
+
+static bool is_space(const char c) {
+    return c == ' ' || c == '\t';
+}
+
+static size_t extract_number(const char* string, uint32_t* number) {
+    size_t ret = 0;
+    while(is_digit(*string)) {
+        *number *= 10;
+        *number += (*string - '0');
+        string++;
+        ret++;
+    }
+    return ret;
+}
+
+static size_t extract_dots(const char* string, uint32_t* number) {
+    size_t ret = 0;
+    while(*string == '.') {
+        *number += 1;
+        string++;
+        ret++;
+    }
+    return ret;
+}
+
+static size_t extract_char(const char* string, char* symbol) {
+    if(is_letter(*string)) {
+        *symbol = *string;
+        return 1;
+    } else {
+        return 0;
+    }
+}
+
+static size_t extract_sharp(const char* string, char* symbol) {
+    if(*string == '#' || *string == '_') {
+        *symbol = '#';
+        return 1;
+    } else {
+        return 0;
+    }
+}
+
+static size_t skip_till(const char* string, const char symbol) {
+    size_t ret = 0;
+    while(*string != '\0' && *string != symbol) {
+        string++;
+        ret++;
+    }
+    if(*string != symbol) {
+        ret = 0;
+    }
+    return ret;
+}
+
+static bool music_player_worker_add_note(
+    MusicPlayerWorker* instance,
+    uint8_t semitone,
+    uint8_t duration,
+    uint8_t dots) {
+    NoteBlock note_block;
+
+    note_block.semitone = semitone;
+    note_block.duration = duration;
+    note_block.dots = dots;
+
+    NoteBlockArray_push_back(instance->notes, note_block);
+
+    return true;
+}
+
+static int8_t note_to_semitone(const char note) {
+    switch(note) {
+    case 'C':
+        return 0;
+    // C#
+    case 'D':
+        return 2;
+    // D#
+    case 'E':
+        return 4;
+    case 'F':
+        return 5;
+    // F#
+    case 'G':
+        return 7;
+    // G#
+    case 'A':
+        return 9;
+    // A#
+    case 'B':
+        return 11;
+    default:
+        return 0;
+    }
+}
+
+static bool music_player_worker_parse_notes(MusicPlayerWorker* instance, const char* string) {
+    const char* cursor = string;
+    bool result = true;
+
+    while(*cursor != '\0') {
+        if(!is_space(*cursor)) {
+            uint32_t duration = 0;
+            char note_char = '\0';
+            char sharp_char = '\0';
+            uint32_t octave = 0;
+            uint32_t dots = 0;
+
+            // Parsing
+            cursor += extract_number(cursor, &duration);
+            cursor += extract_char(cursor, &note_char);
+            cursor += extract_sharp(cursor, &sharp_char);
+            cursor += extract_number(cursor, &octave);
+            cursor += extract_dots(cursor, &dots);
+
+            // Post processing
+            note_char = toupper(note_char);
+            if(!duration) {
+                duration = instance->duration;
+            }
+            if(!octave) {
+                octave = instance->octave;
+            }
+
+            // Validation
+            bool is_valid = true;
+            is_valid &= (duration >= 1 && duration <= 128);
+            is_valid &= ((note_char >= 'A' && note_char <= 'G') || note_char == 'P');
+            is_valid &= (sharp_char == '#' || sharp_char == '\0');
+            is_valid &= (octave <= 16);
+            is_valid &= (dots <= 16);
+            if(!is_valid) {
+                FURI_LOG_E(
+                    TAG,
+                    "Invalid note: %u%c%c%u.%u",
+                    duration,
+                    note_char == '\0' ? '_' : note_char,
+                    sharp_char == '\0' ? '_' : sharp_char,
+                    octave,
+                    dots);
+                result = false;
+                break;
+            }
+
+            // Note to semitones
+            uint8_t semitone = 0;
+            if(note_char == 'P') {
+                semitone = SEMITONE_PAUSE;
+            } else {
+                semitone += octave * 12;
+                semitone += note_to_semitone(note_char);
+                semitone += sharp_char == '#' ? 1 : 0;
+            }
+
+            if(music_player_worker_add_note(instance, semitone, duration, dots)) {
+                FURI_LOG_D(
+                    TAG,
+                    "Added note: %c%c%u.%u = %u %u",
+                    note_char == '\0' ? '_' : note_char,
+                    sharp_char == '\0' ? '_' : sharp_char,
+                    octave,
+                    dots,
+                    semitone,
+                    duration);
+            } else {
+                FURI_LOG_E(
+                    TAG,
+                    "Invalid note: %c%c%u.%u = %u %u",
+                    note_char == '\0' ? '_' : note_char,
+                    sharp_char == '\0' ? '_' : sharp_char,
+                    octave,
+                    dots,
+                    semitone,
+                    duration);
+            }
+            cursor += skip_till(cursor, ',');
+        }
+
+        if(*cursor != '\0') cursor++;
+    }
+
+    return result;
+}
+
+bool music_player_worker_load(MusicPlayerWorker* instance, const char* file_path) {
+    furi_assert(instance);
+    furi_assert(file_path);
+
+    bool ret = false;
+    if(strcasestr(file_path, ".fmf")) {
+        ret = music_player_worker_load_fmf_from_file(instance, file_path);
+    } else {
+        ret = music_player_worker_load_rtttl_from_file(instance, file_path);
+    }
+    return ret;
+}
+
+bool music_player_worker_load_fmf_from_file(MusicPlayerWorker* instance, const char* file_path) {
+    furi_assert(instance);
+    furi_assert(file_path);
+
+    bool result = false;
+    string_t temp_str;
+    string_init(temp_str);
+
+    Storage* storage = furi_record_open("storage");
+    FlipperFormat* file = flipper_format_file_alloc(storage);
+
+    do {
+        if(!flipper_format_file_open_existing(file, file_path)) break;
+
+        uint32_t version = 0;
+        if(!flipper_format_read_header(file, temp_str, &version)) break;
+        if(string_cmp_str(temp_str, MUSIC_PLAYER_FILETYPE) || (version != MUSIC_PLAYER_VERSION)) {
+            FURI_LOG_E(TAG, "Incorrect file format or version");
+            break;
+        }
+
+        if(!flipper_format_read_uint32(file, "BPM", &instance->bpm, 1)) {
+            FURI_LOG_E(TAG, "BPM is missing");
+            break;
+        }
+        if(!flipper_format_read_uint32(file, "Duration", &instance->duration, 1)) {
+            FURI_LOG_E(TAG, "Duration is missing");
+            break;
+        }
+        if(!flipper_format_read_uint32(file, "Octave", &instance->octave, 1)) {
+            FURI_LOG_E(TAG, "Octave is missing");
+            break;
+        }
+
+        if(!flipper_format_read_string(file, "Notes", temp_str)) {
+            FURI_LOG_E(TAG, "Notes is missing");
+            break;
+        }
+
+        if(!music_player_worker_parse_notes(instance, string_get_cstr(temp_str))) {
+            break;
+        }
+
+        result = true;
+    } while(false);
+
+    furi_record_close("storage");
+    flipper_format_free(file);
+    string_clear(temp_str);
+
+    return result;
+}
+
+bool music_player_worker_load_rtttl_from_file(MusicPlayerWorker* instance, const char* file_path) {
+    furi_assert(instance);
+    furi_assert(file_path);
+
+    bool result = false;
+    string_t content;
+    string_init(content);
+    Storage* storage = furi_record_open("storage");
+    File* file = storage_file_alloc(storage);
+
+    do {
+        if(!storage_file_open(file, file_path, FSAM_READ, FSOM_OPEN_EXISTING)) {
+            FURI_LOG_E(TAG, "Unable to open file");
+            break;
+        };
+
+        uint16_t ret = 0;
+        do {
+            uint8_t buffer[65] = {0};
+            ret = storage_file_read(file, buffer, sizeof(buffer) - 1);
+            for(size_t i = 0; i < ret; i++) {
+                string_push_back(content, buffer[i]);
+            }
+        } while(ret > 0);
+
+        string_strim(content);
+        if(!string_size(content)) {
+            FURI_LOG_E(TAG, "Empty file");
+            break;
+        }
+
+        if(!music_player_worker_load_rtttl_from_string(instance, string_get_cstr(content))) {
+            FURI_LOG_E(TAG, "Invalid file content");
+            break;
+        }
+
+        result = true;
+    } while(0);
+
+    storage_file_free(file);
+    furi_record_close("storage");
+    string_clear(content);
+
+    return result;
+}
+
+bool music_player_worker_load_rtttl_from_string(MusicPlayerWorker* instance, const char* string) {
+    furi_assert(instance);
+
+    const char* cursor = string;
+
+    // Skip name
+    cursor += skip_till(cursor, ':');
+    if(*cursor != ':') {
+        return false;
+    }
+
+    // Duration
+    cursor += skip_till(cursor, '=');
+    if(*cursor != '=') {
+        return false;
+    }
+    cursor++;
+    cursor += extract_number(cursor, &instance->duration);
+
+    // Octave
+    cursor += skip_till(cursor, '=');
+    if(*cursor != '=') {
+        return false;
+    }
+    cursor++;
+    cursor += extract_number(cursor, &instance->octave);
+
+    // BPM
+    cursor += skip_till(cursor, '=');
+    if(*cursor != '=') {
+        return false;
+    }
+    cursor++;
+    cursor += extract_number(cursor, &instance->bpm);
+
+    // Notes
+    cursor += skip_till(cursor, ':');
+    if(*cursor != ':') {
+        return false;
+    }
+    cursor++;
+    if(!music_player_worker_parse_notes(instance, cursor)) {
+        return false;
+    }
+
+    return true;
+}
+
+void music_player_worker_set_callback(
+    MusicPlayerWorker* instance,
+    MusicPlayerWorkerCallback callback,
+    void* context) {
+    furi_assert(instance);
+    instance->callback = callback;
+    instance->callback_context = context;
+}
+
+void music_player_worker_set_volume(MusicPlayerWorker* instance, float volume) {
+    furi_assert(instance);
+    instance->volume = volume;
+}
+
+void music_player_worker_start(MusicPlayerWorker* instance) {
+    furi_assert(instance);
+    furi_assert(instance->should_work == false);
+
+    instance->should_work = true;
+    furi_thread_start(instance->thread);
+}
+
+void music_player_worker_stop(MusicPlayerWorker* instance) {
+    furi_assert(instance);
+    furi_assert(instance->should_work == true);
+
+    instance->should_work = false;
+    furi_thread_join(instance->thread);
+}
diff --git a/applications/music_player/music_player_worker.h b/applications/music_player/music_player_worker.h
new file mode 100644
index 00000000..3aa99ea3
--- /dev/null
+++ b/applications/music_player/music_player_worker.h
@@ -0,0 +1,36 @@
+#pragma once
+
+#include <stdbool.h>
+#include <stdint.h>
+
+typedef void (*MusicPlayerWorkerCallback)(
+    uint8_t semitone,
+    uint8_t dots,
+    uint8_t duration,
+    float position,
+    void* context);
+
+typedef struct MusicPlayerWorker MusicPlayerWorker;
+
+MusicPlayerWorker* music_player_worker_alloc();
+
+void music_player_worker_free(MusicPlayerWorker* instance);
+
+bool music_player_worker_load(MusicPlayerWorker* instance, const char* file_path);
+
+bool music_player_worker_load_fmf_from_file(MusicPlayerWorker* instance, const char* file_path);
+
+bool music_player_worker_load_rtttl_from_file(MusicPlayerWorker* instance, const char* file_path);
+
+bool music_player_worker_load_rtttl_from_string(MusicPlayerWorker* instance, const char* string);
+
+void music_player_worker_set_callback(
+    MusicPlayerWorker* instance,
+    MusicPlayerWorkerCallback callback,
+    void* context);
+
+void music_player_worker_set_volume(MusicPlayerWorker* instance, float volume);
+
+void music_player_worker_start(MusicPlayerWorker* instance);
+
+void music_player_worker_stop(MusicPlayerWorker* instance);
diff --git a/applications/nfc/helpers/nfc_custom_event.h b/applications/nfc/helpers/nfc_custom_event.h
index bab7c0aa..5de44001 100644
--- a/applications/nfc/helpers/nfc_custom_event.h
+++ b/applications/nfc/helpers/nfc_custom_event.h
@@ -9,4 +9,4 @@ enum NfcCustomEvent {
     NfcCustomEventByteInputDone,
     NfcCustomEventTextInputDone,
     NfcCustomEventDictAttackDone,
-};
\ No newline at end of file
+};
diff --git a/applications/nfc/nfc_cli.c b/applications/nfc/nfc_cli.c
index 52c971ef..9b77a29f 100755
--- a/applications/nfc/nfc_cli.c
+++ b/applications/nfc/nfc_cli.c
@@ -17,6 +17,7 @@ static void nfc_cli_print_usage() {
 }
 
 static void nfc_cli_detect(Cli* cli, string_t args) {
+    UNUSED(args);
     // Check if nfc worker is not busy
     if(furi_hal_nfc_is_busy()) {
         printf("Nfc is busy\r\n");
@@ -45,6 +46,7 @@ static void nfc_cli_detect(Cli* cli, string_t args) {
 }
 
 static void nfc_cli_emulate(Cli* cli, string_t args) {
+    UNUSED(args);
     // Check if nfc worker is not busy
     if(furi_hal_nfc_is_busy()) {
         printf("Nfc is busy\r\n");
@@ -74,6 +76,7 @@ static void nfc_cli_emulate(Cli* cli, string_t args) {
 }
 
 static void nfc_cli_field(Cli* cli, string_t args) {
+    UNUSED(args);
     // Check if nfc worker is not busy
     if(furi_hal_nfc_is_busy()) {
         printf("Nfc is busy\r\n");
@@ -95,6 +98,7 @@ static void nfc_cli_field(Cli* cli, string_t args) {
 }
 
 static void nfc_cli(Cli* cli, string_t args, void* context) {
+    UNUSED(context);
     string_t cmd;
     string_init(cmd);
 
diff --git a/applications/nfc/nfc_device.c b/applications/nfc/nfc_device.c
index 6b769803..9970cbfe 100644
--- a/applications/nfc/nfc_device.c
+++ b/applications/nfc/nfc_device.c
@@ -373,7 +373,7 @@ bool nfc_device_load_mifare_df_app(FlipperFormat* file, MifareDesfireApplication
         if(!flipper_format_read_hex(file, string_get_cstr(key), tmp, n_files)) break;
         MifareDesfireFile** file_head = &app->file_head;
         bool parsed_files = true;
-        for(int i = 0; i < n_files; i++) {
+        for(uint32_t i = 0; i < n_files; i++) {
             parsed_files = false;
             f = malloc(sizeof(MifareDesfireFile));
             memset(f, 0, sizeof(MifareDesfireFile));
@@ -528,7 +528,7 @@ bool nfc_device_load_mifare_df_data(FlipperFormat* file, NfcDevice* dev) {
         if(!flipper_format_read_hex(file, "Application IDs", tmp, n_apps * 3)) break;
         bool parsed_apps = true;
         MifareDesfireApplication** app_head = &data->app_head;
-        for(int i = 0; i < n_apps; i++) {
+        for(uint32_t i = 0; i < n_apps; i++) {
             MifareDesfireApplication* app = malloc(sizeof(MifareDesfireApplication));
             memset(app, 0, sizeof(MifareDesfireApplication));
             memcpy(app->id, &tmp[i * 3], 3);
@@ -764,7 +764,7 @@ static bool nfc_device_load_data(NfcDevice* dev, string_t path) {
     uint32_t data_cnt = 0;
     string_t temp_str;
     string_init(temp_str);
-    bool depricated_version = false;
+    bool deprecated_version = false;
 
     do {
         // Check existance of shadow file
@@ -783,7 +783,7 @@ static bool nfc_device_load_data(NfcDevice* dev, string_t path) {
         uint32_t version = 0;
         if(!flipper_format_read_header(file, temp_str, &version)) break;
         if(string_cmp_str(temp_str, nfc_file_header) || (version != nfc_file_version)) {
-            depricated_version = true;
+            deprecated_version = true;
             break;
         }
         // Read Nfc device type
@@ -810,8 +810,8 @@ static bool nfc_device_load_data(NfcDevice* dev, string_t path) {
     } while(false);
 
     if(!parsed) {
-        if(depricated_version) {
-            dialog_message_show_storage_error(dev->dialogs, "File format depricated");
+        if(deprecated_version) {
+            dialog_message_show_storage_error(dev->dialogs, "File format deprecated");
         } else {
             dialog_message_show_storage_error(dev->dialogs, "Can not parse\nfile");
         }
diff --git a/applications/nfc/scenes/nfc_scene_delete_success.c b/applications/nfc/scenes/nfc_scene_delete_success.c
index a52c40d8..547aeab7 100755
--- a/applications/nfc/scenes/nfc_scene_delete_success.c
+++ b/applications/nfc/scenes/nfc_scene_delete_success.c
@@ -37,4 +37,4 @@ void nfc_scene_delete_success_on_exit(void* context) {
 
     // Clear view
     popup_reset(nfc->popup);
-}
\ No newline at end of file
+}
diff --git a/applications/nfc/scenes/nfc_scene_device_info.c b/applications/nfc/scenes/nfc_scene_device_info.c
index 10851e86..03464c66 100644
--- a/applications/nfc/scenes/nfc_scene_device_info.c
+++ b/applications/nfc/scenes/nfc_scene_device_info.c
@@ -21,6 +21,7 @@ void nfc_scene_device_info_dialog_callback(DialogExResult result, void* context)
 }
 
 void nfc_scene_device_info_bank_card_callback(GuiButtonType result, InputType type, void* context) {
+    UNUSED(result);
     Nfc* nfc = context;
     if(type == InputTypeShort) {
         view_dispatcher_send_custom_event(nfc->view_dispatcher, NfcCustomEventViewExit);
diff --git a/applications/nfc/scenes/nfc_scene_emulate_mifare_ul.c b/applications/nfc/scenes/nfc_scene_emulate_mifare_ul.c
index 871ca636..eda7637c 100755
--- a/applications/nfc/scenes/nfc_scene_emulate_mifare_ul.c
+++ b/applications/nfc/scenes/nfc_scene_emulate_mifare_ul.c
@@ -5,6 +5,7 @@
 #define NFC_MF_UL_DATA_CHANGED (1UL)
 
 void nfc_emulate_mifare_ul_worker_callback(NfcWorkerEvent event, void* context) {
+    UNUSED(event);
     Nfc* nfc = context;
 
     scene_manager_set_scene_state(
diff --git a/applications/nfc/scenes/nfc_scene_emulate_uid.c b/applications/nfc/scenes/nfc_scene_emulate_uid.c
index 58ac138e..e67b7274 100755
--- a/applications/nfc/scenes/nfc_scene_emulate_uid.c
+++ b/applications/nfc/scenes/nfc_scene_emulate_uid.c
@@ -9,6 +9,7 @@ enum {
 };
 
 void nfc_emulate_uid_worker_callback(NfcWorkerEvent event, void* context) {
+    UNUSED(event);
     furi_assert(context);
     Nfc* nfc = context;
     view_dispatcher_send_custom_event(nfc->view_dispatcher, NfcCustomEventWorkerExit);
diff --git a/applications/nfc/scenes/nfc_scene_field.c b/applications/nfc/scenes/nfc_scene_field.c
index 31cf74b8..e3eb6a70 100644
--- a/applications/nfc/scenes/nfc_scene_field.c
+++ b/applications/nfc/scenes/nfc_scene_field.c
@@ -19,6 +19,8 @@ void nfc_scene_field_on_enter(void* context) {
 }
 
 bool nfc_scene_field_on_event(void* context, SceneManagerEvent event) {
+    UNUSED(context);
+    UNUSED(event);
     return false;
 }
 
diff --git a/applications/nfc/scenes/nfc_scene_file_select.c b/applications/nfc/scenes/nfc_scene_file_select.c
index a8126456..36614bb8 100755
--- a/applications/nfc/scenes/nfc_scene_file_select.c
+++ b/applications/nfc/scenes/nfc_scene_file_select.c
@@ -11,8 +11,11 @@ void nfc_scene_file_select_on_enter(void* context) {
 }
 
 bool nfc_scene_file_select_on_event(void* context, SceneManagerEvent event) {
+    UNUSED(context);
+    UNUSED(event);
     return false;
 }
 
 void nfc_scene_file_select_on_exit(void* context) {
+    UNUSED(context);
 }
diff --git a/applications/nfc/scenes/nfc_scene_mifare_desfire_app.c b/applications/nfc/scenes/nfc_scene_mifare_desfire_app.c
index 0974c062..fdfbd2ec 100644
--- a/applications/nfc/scenes/nfc_scene_mifare_desfire_app.c
+++ b/applications/nfc/scenes/nfc_scene_mifare_desfire_app.c
@@ -11,7 +11,7 @@ MifareDesfireApplication* nfc_scene_mifare_desfire_app_get_app(Nfc* nfc) {
     uint32_t app_idx =
         scene_manager_get_scene_state(nfc->scene_manager, NfcSceneMifareDesfireApp) >> 1;
     MifareDesfireApplication* app = nfc->dev->dev_data.mf_df_data.app_head;
-    for(int i = 0; i < app_idx && app; i++) {
+    for(uint32_t i = 0; i < app_idx && app; i++) {
         app = app->next;
     }
     return app;
diff --git a/applications/nfc/scenes/nfc_scene_read_card.c b/applications/nfc/scenes/nfc_scene_read_card.c
index 4d151c08..645b8deb 100755
--- a/applications/nfc/scenes/nfc_scene_read_card.c
+++ b/applications/nfc/scenes/nfc_scene_read_card.c
@@ -2,6 +2,7 @@
 #include <dolphin/dolphin.h>
 
 void nfc_read_card_worker_callback(NfcWorkerEvent event, void* context) {
+    UNUSED(event);
     Nfc* nfc = context;
     view_dispatcher_send_custom_event(nfc->view_dispatcher, NfcCustomEventWorkerExit);
 }
diff --git a/applications/nfc/scenes/nfc_scene_read_emv_app.c b/applications/nfc/scenes/nfc_scene_read_emv_app.c
index f0192cb9..4a64622d 100755
--- a/applications/nfc/scenes/nfc_scene_read_emv_app.c
+++ b/applications/nfc/scenes/nfc_scene_read_emv_app.c
@@ -2,6 +2,7 @@
 #include <dolphin/dolphin.h>
 
 void nfc_read_emv_app_worker_callback(NfcWorkerEvent event, void* context) {
+    UNUSED(event);
     Nfc* nfc = context;
     view_dispatcher_send_custom_event(nfc->view_dispatcher, NfcCustomEventWorkerExit);
 }
diff --git a/applications/nfc/scenes/nfc_scene_read_emv_data.c b/applications/nfc/scenes/nfc_scene_read_emv_data.c
index b72c873e..85df4121 100755
--- a/applications/nfc/scenes/nfc_scene_read_emv_data.c
+++ b/applications/nfc/scenes/nfc_scene_read_emv_data.c
@@ -2,6 +2,7 @@
 #include <dolphin/dolphin.h>
 
 void nfc_read_emv_data_worker_callback(NfcWorkerEvent event, void* context) {
+    UNUSED(event);
     Nfc* nfc = context;
     view_dispatcher_send_custom_event(nfc->view_dispatcher, NfcCustomEventWorkerExit);
 }
diff --git a/applications/nfc/scenes/nfc_scene_read_mifare_desfire.c b/applications/nfc/scenes/nfc_scene_read_mifare_desfire.c
index ebd7289b..f14f81ba 100644
--- a/applications/nfc/scenes/nfc_scene_read_mifare_desfire.c
+++ b/applications/nfc/scenes/nfc_scene_read_mifare_desfire.c
@@ -2,6 +2,7 @@
 #include <dolphin/dolphin.h>
 
 void nfc_read_mifare_desfire_worker_callback(NfcWorkerEvent event, void* context) {
+    UNUSED(event);
     Nfc* nfc = context;
     view_dispatcher_send_custom_event(nfc->view_dispatcher, NfcCustomEventWorkerExit);
 }
diff --git a/applications/nfc/scenes/nfc_scene_read_mifare_ul.c b/applications/nfc/scenes/nfc_scene_read_mifare_ul.c
index 8903e2c4..659e08fb 100755
--- a/applications/nfc/scenes/nfc_scene_read_mifare_ul.c
+++ b/applications/nfc/scenes/nfc_scene_read_mifare_ul.c
@@ -2,6 +2,7 @@
 #include <dolphin/dolphin.h>
 
 void nfc_read_mifare_ul_worker_callback(NfcWorkerEvent event, void* context) {
+    UNUSED(event);
     Nfc* nfc = context;
     view_dispatcher_send_custom_event(nfc->view_dispatcher, NfcCustomEventWorkerExit);
 }
diff --git a/applications/notification/notification_app.c b/applications/notification/notification_app.c
index 4db12bbf..7db4986d 100644
--- a/applications/notification/notification_app.c
+++ b/applications/notification/notification_app.c
@@ -298,7 +298,6 @@ void notification_process_notification_message(
             need_minimal_delay = true;
         }
 
-        led_active = false;
         notification_apply_notification_leds(app, led_values);
         reset_mask |= reset_red_mask;
         reset_mask |= reset_green_mask;
@@ -489,6 +488,7 @@ static NotificationApp* notification_app_alloc() {
 
 // App
 int32_t notification_srv(void* p) {
+    UNUSED(p);
     NotificationApp* app = notification_app_alloc();
 
     if(!notification_load_settings(app)) {
diff --git a/applications/notification/notification_app_api.c b/applications/notification/notification_app_api.c
index ed39b7d6..d11a289b 100644
--- a/applications/notification/notification_app_api.c
+++ b/applications/notification/notification_app_api.c
@@ -34,4 +34,4 @@ void notification_internal_message_block(
     furi_check(osMessageQueuePut(app->queue, &m, 0, osWaitForever) == osOK);
     osEventFlagsWait(m.back_event, NOTIFICATION_EVENT_COMPLETE, osFlagsWaitAny, osWaitForever);
     osEventFlagsDelete(m.back_event);
-};
\ No newline at end of file
+};
diff --git a/applications/notification/notification_settings_app.c b/applications/notification/notification_settings_app.c
index eef14ebf..bcb1b6a2 100644
--- a/applications/notification/notification_settings_app.c
+++ b/applications/notification/notification_settings_app.c
@@ -120,6 +120,7 @@ static void vibro_changed(VariableItem* item) {
 }
 
 static uint32_t notification_app_settings_exit(void* context) {
+    UNUSED(context);
     return VIEW_NONE;
 }
 
@@ -189,6 +190,7 @@ static void free_settings(NotificationAppSettings* app) {
 }
 
 int32_t notification_settings_app(void* p) {
+    UNUSED(p);
     NotificationAppSettings* app = alloc_settings();
     view_dispatcher_run(app->view_dispatcher);
     notification_message_save_settings(app->notification);
diff --git a/applications/power/battery_test_app/battery_test_app.c b/applications/power/battery_test_app/battery_test_app.c
index 1588a525..f24de32b 100755
--- a/applications/power/battery_test_app/battery_test_app.c
+++ b/applications/power/battery_test_app/battery_test_app.c
@@ -89,6 +89,7 @@ void battery_test_free(BatteryTestApp* app) {
 }
 
 int32_t battery_test_app(void* p) {
+    UNUSED(p);
     BatteryTestApp* app = battery_test_alloc();
     // Disable battery low level notification
     power_enable_low_battery_level_notification(app->power, false);
diff --git a/applications/power/power_cli.c b/applications/power/power_cli.c
index 09e75fa9..d474a729 100644
--- a/applications/power/power_cli.c
+++ b/applications/power/power_cli.c
@@ -6,6 +6,8 @@
 #include <power/power_service/power.h>
 
 void power_cli_off(Cli* cli, string_t args) {
+    UNUSED(cli);
+    UNUSED(args);
     Power* power = furi_record_open("power");
     printf("It's now safe to disconnect USB from your flipper\r\n");
     osDelay(666);
@@ -13,26 +15,37 @@ void power_cli_off(Cli* cli, string_t args) {
 }
 
 void power_cli_reboot(Cli* cli, string_t args) {
+    UNUSED(cli);
+    UNUSED(args);
     power_reboot(PowerBootModeNormal);
 }
 
 void power_cli_reboot2dfu(Cli* cli, string_t args) {
+    UNUSED(cli);
+    UNUSED(args);
     power_reboot(PowerBootModeDfu);
 }
 
 static void power_cli_info_callback(const char* key, const char* value, bool last, void* context) {
+    UNUSED(last);
+    UNUSED(context);
     printf("%-24s: %s\r\n", key, value);
 }
 
 void power_cli_info(Cli* cli, string_t args) {
+    UNUSED(cli);
+    UNUSED(args);
     furi_hal_power_info_get(power_cli_info_callback, NULL);
 }
 
 void power_cli_debug(Cli* cli, string_t args) {
+    UNUSED(cli);
+    UNUSED(args);
     furi_hal_power_dump_state();
 }
 
 void power_cli_5v(Cli* cli, string_t args) {
+    UNUSED(cli);
     if(!string_cmp(args, "0")) {
         furi_hal_power_disable_otg();
     } else if(!string_cmp(args, "1")) {
@@ -43,6 +56,7 @@ void power_cli_5v(Cli* cli, string_t args) {
 }
 
 void power_cli_3v3(Cli* cli, string_t args) {
+    UNUSED(cli);
     if(!string_cmp(args, "0")) {
         furi_hal_power_disable_external_3_3v();
     } else if(!string_cmp(args, "1")) {
@@ -69,6 +83,7 @@ static void power_cli_command_print_usage() {
 }
 
 void power_cli(Cli* cli, string_t args, void* context) {
+    UNUSED(context);
     string_t cmd;
     string_init(cmd);
 
diff --git a/applications/power/power_service/power.c b/applications/power/power_service/power.c
index 5f7eeb84..ac1856e7 100644
--- a/applications/power/power_service/power.c
+++ b/applications/power/power_service/power.c
@@ -11,20 +11,21 @@
 void power_draw_battery_callback(Canvas* canvas, void* context) {
     furi_assert(context);
     Power* power = context;
-    canvas_draw_icon(canvas, 0, 1, &I_Battery_26x8);
+    canvas_draw_icon(canvas, 0, 0, &I_Battery_26x8);
 
     if(power->info.gauge_is_ok) {
-        canvas_draw_box(canvas, 2, 3, (power->info.charge + 4) / 5, 4);
+        canvas_draw_box(canvas, 2, 2, (power->info.charge + 4) / 5, 4);
         if(power->state == PowerStateCharging) {
             canvas_set_bitmap_mode(canvas, 1);
             canvas_set_color(canvas, ColorWhite);
-            canvas_draw_icon(canvas, 8, 0, &I_Charging_lightning_mask_9x10);
+            // TODO: replace -1 magic for uint8_t with re-framing
+            canvas_draw_icon(canvas, 8, -1, &I_Charging_lightning_mask_9x10);
             canvas_set_color(canvas, ColorBlack);
-            canvas_draw_icon(canvas, 8, 0, &I_Charging_lightning_9x10);
+            canvas_draw_icon(canvas, 8, -1, &I_Charging_lightning_9x10);
             canvas_set_bitmap_mode(canvas, 0);
         }
     } else {
-        canvas_draw_box(canvas, 8, 4, 8, 2);
+        canvas_draw_box(canvas, 8, 3, 8, 2);
     }
 }
 
diff --git a/applications/power/power_service/power_api.c b/applications/power/power_service/power_api.c
index b290cb83..865c21c8 100644
--- a/applications/power/power_service/power_api.c
+++ b/applications/power/power_service/power_api.c
@@ -2,6 +2,7 @@
 
 #include <furi.h>
 #include <furi_hal.h>
+#include <update_util/update_operation.h>
 
 void power_off(Power* power) {
     furi_hal_power_off();
@@ -14,7 +15,7 @@ void power_off(Power* power) {
 
 void power_reboot(PowerBootMode mode) {
     if(mode == PowerBootModeNormal) {
-        furi_hal_rtc_set_boot_mode(FuriHalRtcBootModeNormal);
+        update_operation_disarm();
     } else if(mode == PowerBootModeDfu) {
         furi_hal_rtc_set_boot_mode(FuriHalRtcBootModeDfu);
     } else if(mode == PowerBootModeUpdateStart) {
diff --git a/applications/power/power_settings_app/power_settings_app.c b/applications/power/power_settings_app/power_settings_app.c
index 1e87e7d6..822c51bc 100755
--- a/applications/power/power_settings_app/power_settings_app.c
+++ b/applications/power/power_settings_app/power_settings_app.c
@@ -75,6 +75,7 @@ void power_settings_app_free(PowerSettingsApp* app) {
 }
 
 int32_t power_settings_app(void* p) {
+    UNUSED(p);
     PowerSettingsApp* app = power_settings_app_alloc();
     view_dispatcher_run(app->view_dispatcher);
     power_settings_app_free(app);
diff --git a/applications/power/power_settings_app/scenes/power_settings_scene_battery_info.c b/applications/power/power_settings_app/scenes/power_settings_scene_battery_info.c
index 4dd04f8c..0085c31d 100755
--- a/applications/power/power_settings_app/scenes/power_settings_scene_battery_info.c
+++ b/applications/power/power_settings_app/scenes/power_settings_scene_battery_info.c
@@ -31,4 +31,5 @@ bool power_settings_scene_battery_info_on_event(void* context, SceneManagerEvent
 }
 
 void power_settings_scene_battery_info_on_exit(void* context) {
+    UNUSED(context);
 }
diff --git a/applications/power/power_settings_app/scenes/power_settings_scene_reboot.c b/applications/power/power_settings_app/scenes/power_settings_scene_reboot.c
index 8edc8138..2d879612 100755
--- a/applications/power/power_settings_app/scenes/power_settings_scene_reboot.c
+++ b/applications/power/power_settings_app/scenes/power_settings_scene_reboot.c
@@ -33,6 +33,7 @@ void power_settings_scene_reboot_on_enter(void* context) {
 }
 
 bool power_settings_scene_reboot_on_event(void* context, SceneManagerEvent event) {
+    UNUSED(context);
     bool consumed = false;
 
     if(event.type == SceneManagerEventTypeCustom) {
diff --git a/applications/rpc/rpc.c b/applications/rpc/rpc.c
index efd5ed87..7d51defd 100644
--- a/applications/rpc/rpc.c
+++ b/applications/rpc/rpc.c
@@ -102,7 +102,7 @@ static size_t rpc_sprintf_msg_file(
     size_t msg_files_size) {
     size_t cnt = 0;
 
-    for(int i = 0; i < msg_files_size; ++i, ++msg_file) {
+    for(size_t i = 0; i < msg_files_size; ++i, ++msg_file) {
         string_cat_printf(
             str,
             "%s[%c] size: %5ld",
@@ -136,7 +136,7 @@ void rpc_print_data(const char* prefix, uint8_t* buffer, size_t size) {
     string_reserve(str, 100 + size * 5);
 
     string_cat_printf(str, "\r\n%s DEC(%d): {", prefix, size);
-    for(int i = 0; i < size; ++i) {
+    for(size_t i = 0; i < size; ++i) {
         string_cat_printf(str, "%d, ", buffer[i]);
     }
     string_cat_printf(str, "}\r\n");
@@ -146,7 +146,7 @@ void rpc_print_data(const char* prefix, uint8_t* buffer, size_t size) {
     string_reserve(str, 100 + size * 3);
 
     string_cat_printf(str, "%s HEX(%d): {", prefix, size);
-    for(int i = 0; i < size; ++i) {
+    for(size_t i = 0; i < size; ++i) {
         string_cat_printf(str, "%02X", buffer[i]);
     }
     string_cat_printf(str, "}\r\n\r\n");
@@ -573,7 +573,7 @@ static void rpc_session_free_callback(FuriThreadState thread_state, void* contex
     RpcSession* session = (RpcSession*)context;
 
     if(thread_state == FuriThreadStateStopped) {
-        for(int i = 0; i < COUNT_OF(rpc_systems); ++i) {
+        for(size_t i = 0; i < COUNT_OF(rpc_systems); ++i) {
             if(rpc_systems[i].free) {
                 rpc_systems[i].free(session->system_contexts[i]);
             }
@@ -611,7 +611,7 @@ RpcSession* rpc_session_open(Rpc* rpc) {
     session->decoded_message->cb_content.arg = session;
 
     session->system_contexts = malloc(COUNT_OF(rpc_systems) * sizeof(void*));
-    for(int i = 0; i < COUNT_OF(rpc_systems); ++i) {
+    for(size_t i = 0; i < COUNT_OF(rpc_systems); ++i) {
         session->system_contexts[i] = rpc_systems[i].alloc(session);
     }
 
@@ -647,6 +647,7 @@ void rpc_session_close(RpcSession* session) {
 }
 
 int32_t rpc_srv(void* p) {
+    UNUSED(p);
     Rpc* rpc = malloc(sizeof(Rpc));
 
     rpc->busy_mutex = osMutexNew(NULL);
diff --git a/applications/rpc/rpc_cli.c b/applications/rpc/rpc_cli.c
index b9304367..1c8991bc 100644
--- a/applications/rpc/rpc_cli.c
+++ b/applications/rpc/rpc_cli.c
@@ -38,6 +38,7 @@ static void rpc_session_terminated_callback(void* context) {
 }
 
 void rpc_cli_command_start_session(Cli* cli, string_t args, void* context) {
+    UNUSED(args);
     Rpc* rpc = context;
 
     uint32_t mem_before = memmgr_get_free_heap();
diff --git a/applications/rpc/rpc_storage.c b/applications/rpc/rpc_storage.c
index a21fec8e..e6a59ea8 100644
--- a/applications/rpc/rpc_storage.c
+++ b/applications/rpc/rpc_storage.c
@@ -31,8 +31,6 @@ typedef struct {
     uint32_t current_command_id;
 } RpcStorageSystem;
 
-void rpc_print_message(const PB_Main* message);
-
 static void rpc_system_storage_reset_state(
     RpcStorageSystem* rpc_storage,
     RpcSession* session,
diff --git a/applications/rpc/rpc_system.c b/applications/rpc/rpc_system.c
index 9ce7e34a..45ae2e5a 100644
--- a/applications/rpc/rpc_system.c
+++ b/applications/rpc/rpc_system.c
@@ -275,15 +275,22 @@ static void rpc_system_system_update_request_process(const PB_Main* request, voi
     RpcSession* session = (RpcSession*)context;
     furi_assert(session);
 
-    bool update_prepare_result =
-        update_operation_prepare(request->content.system_update_request.update_manifest) ==
-        UpdatePrepareResultOK;
+    UpdatePrepareResult update_prepare_result =
+        update_operation_prepare(request->content.system_update_request.update_manifest);
+    /* RPC enum does not have such entry; setting to closest one */
+    if(update_prepare_result == UpdatePrepareResultOutdatedManifestVersion) {
+        update_prepare_result = UpdatePrepareResultManifestInvalid;
+    }
 
     PB_Main* response = malloc(sizeof(PB_Main));
     response->command_id = request->command_id;
     response->has_next = false;
-    response->command_status = update_prepare_result ? PB_CommandStatus_OK :
-                                                       PB_CommandStatus_ERROR_INVALID_PARAMETERS;
+    response->command_status = (update_prepare_result == UpdatePrepareResultOK) ?
+                                   PB_CommandStatus_OK :
+                                   PB_CommandStatus_ERROR_INVALID_PARAMETERS;
+    response->which_content = PB_Main_system_update_response_tag;
+    response->content.system_update_response.code =
+        (PB_System_UpdateResponse_UpdateResultCode)update_prepare_result;
     rpc_send_and_release(session, response);
     free(response);
 }
diff --git a/applications/scened_app_example/scene/scened_app_scene_byte_input.cpp b/applications/scened_app_example/scene/scened_app_scene_byte_input.cpp
index 6d618748..200252ad 100644
--- a/applications/scened_app_example/scene/scened_app_scene_byte_input.cpp
+++ b/applications/scened_app_example/scene/scened_app_scene_byte_input.cpp
@@ -1,6 +1,6 @@
 #include "scened_app_scene_byte_input.h"
 
-void ScenedAppSceneByteInput::on_enter(ScenedApp* app, bool need_restore) {
+void ScenedAppSceneByteInput::on_enter(ScenedApp* app, bool /* need_restore */) {
     ByteInputVM* byte_input = app->view_controller;
     auto callback = cbc::obtain_connector(this, &ScenedAppSceneByteInput::result_callback);
 
diff --git a/applications/scened_app_example/scene/scened_app_scene_byte_input.h b/applications/scened_app_example/scene/scened_app_scene_byte_input.h
index 12daf310..0f0b02ac 100644
--- a/applications/scened_app_example/scene/scened_app_scene_byte_input.h
+++ b/applications/scened_app_example/scene/scened_app_scene_byte_input.h
@@ -16,4 +16,4 @@ private:
         0xF4,
         0xD3,
     };
-};
\ No newline at end of file
+};
diff --git a/applications/scened_app_example/scene/scened_app_scene_start.h b/applications/scened_app_example/scene/scened_app_scene_start.h
index 19e1b78d..8324a20f 100644
--- a/applications/scened_app_example/scene/scened_app_scene_start.h
+++ b/applications/scened_app_example/scene/scened_app_scene_start.h
@@ -10,4 +10,4 @@ public:
 private:
     void submenu_callback(void* context, uint32_t index);
     uint32_t submenu_item_selected = 0;
-};
\ No newline at end of file
+};
diff --git a/applications/scened_app_example/scened_app.cpp b/applications/scened_app_example/scened_app.cpp
index e658d6d0..64040b22 100644
--- a/applications/scened_app_example/scened_app.cpp
+++ b/applications/scened_app_example/scened_app.cpp
@@ -17,4 +17,4 @@ void ScenedApp::run() {
 
     notification_message(notification, &sequence_blink_green_10);
     scene_controller.process(100);
-}
\ No newline at end of file
+}
diff --git a/applications/scened_app_example/scened_app_launcher.cpp b/applications/scened_app_example/scened_app_launcher.cpp
index 1664b87d..3d0bdfca 100644
--- a/applications/scened_app_example/scened_app_launcher.cpp
+++ b/applications/scened_app_example/scened_app_launcher.cpp
@@ -2,6 +2,7 @@
 
 // app enter function
 extern "C" int32_t scened_app(void* p) {
+    UNUSED(p);
     ScenedApp* app = new ScenedApp();
     app->run();
     delete app;
diff --git a/applications/snake_game/snake_game.c b/applications/snake_game/snake_game.c
index 2bc0a6a3..bb9e207d 100644
--- a/applications/snake_game/snake_game.c
+++ b/applications/snake_game/snake_game.c
@@ -313,6 +313,7 @@ static void snake_game_process_game_step(SnakeState* const snake_state) {
 }
 
 int32_t snake_game_app(void* p) {
+    UNUSED(p);
     srand(DWT->CYCCNT);
 
     osMessageQueueId_t event_queue = osMessageQueueNew(8, sizeof(SnakeEvent), NULL);
diff --git a/applications/storage/filesystem_api.c b/applications/storage/filesystem_api.c
index 42a10c6b..b979967a 100644
--- a/applications/storage/filesystem_api.c
+++ b/applications/storage/filesystem_api.c
@@ -35,4 +35,4 @@ const char* filesystem_api_error_get_desc(FS_Error error_id) {
         break;
     }
     return result;
-}
\ No newline at end of file
+}
diff --git a/applications/storage/filesystem_api_defines.h b/applications/storage/filesystem_api_defines.h
index cc33de26..b6f1d8f1 100644
--- a/applications/storage/filesystem_api_defines.h
+++ b/applications/storage/filesystem_api_defines.h
@@ -57,4 +57,4 @@ const char* filesystem_api_error_get_desc(FS_Error error_id);
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/applications/storage/storage.c b/applications/storage/storage.c
index 078a136c..b280547b 100644
--- a/applications/storage/storage.c
+++ b/applications/storage/storage.c
@@ -100,6 +100,7 @@ void storage_tick(Storage* app) {
 }
 
 int32_t storage_srv(void* p) {
+    UNUSED(p);
     Storage* app = storage_app_alloc();
     furi_record_create("storage", app);
 
diff --git a/applications/storage/storage.h b/applications/storage/storage.h
index eb51adef..1e6ced23 100644
--- a/applications/storage/storage.h
+++ b/applications/storage/storage.h
@@ -282,7 +282,7 @@ FS_Error storage_int_restore(Storage* api, const char* dstname);
 /***************** Simplified Functions ******************/
 
 /**
- * Removes a file/directory from the repository, the directory must be empty and the file/directory must not be open
+ * Removes a file/directory, the directory must be empty and the file/directory must not be open
  * @param storage pointer to the api
  * @param path 
  * @return true on success or if file/dir is not exist
@@ -290,7 +290,7 @@ FS_Error storage_int_restore(Storage* api, const char* dstname);
 bool storage_simply_remove(Storage* storage, const char* path);
 
 /**
- * Removes a file/directory from the repository, the directory can be not empty
+ * Recursively removes a file/directory, the directory can be not empty
  * @param storage pointer to the api
  * @param path
  * @return true on success or if file/dir is not exist
@@ -325,4 +325,4 @@ void storage_get_next_filename(
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/applications/storage/storage_cli.c b/applications/storage/storage_cli.c
index 3cb345bd..b35e37a8 100644
--- a/applications/storage/storage_cli.c
+++ b/applications/storage/storage_cli.c
@@ -4,6 +4,7 @@
 #include <cli/cli.h>
 #include <lib/toolbox/args.h>
 #include <lib/toolbox/md5.h>
+#include <lib/toolbox/dir_walk.h>
 #include <storage/storage.h>
 #include <storage/storage_sd_api.h>
 #include <power/power_service/power.h>
@@ -18,6 +19,7 @@ static void storage_cli_print_usage() {
     printf("\tinfo\t - get FS info\r\n");
     printf("\tformat\t - format filesystem\r\n");
     printf("\tlist\t - list files and dirs\r\n");
+    printf("\ttree\t - list files and dirs, recursive\r\n");
     printf("\tremove\t - delete the file or directory\r\n");
     printf("\tread\t - read text from file and print file size and content to cli\r\n");
     printf(
@@ -37,6 +39,7 @@ static void storage_cli_print_error(FS_Error error) {
 }
 
 static void storage_cli_info(Cli* cli, string_t path) {
+    UNUSED(cli);
     Storage* api = furi_record_open("storage");
 
     if(string_cmp_str(path, "/int") == 0) {
@@ -101,6 +104,7 @@ static void storage_cli_format(Cli* cli, string_t path) {
 };
 
 static void storage_cli_list(Cli* cli, string_t path) {
+    UNUSED(cli);
     if(string_cmp_str(path, "/") == 0) {
         printf("\t[D] int\r\n");
         printf("\t[D] ext\r\n");
@@ -136,7 +140,46 @@ static void storage_cli_list(Cli* cli, string_t path) {
     }
 }
 
+static void storage_cli_tree(Cli* cli, string_t path) {
+    if(string_cmp_str(path, "/") == 0) {
+        string_set(path, "/int");
+        storage_cli_tree(cli, path);
+        string_set(path, "/ext");
+        storage_cli_tree(cli, path);
+    } else {
+        Storage* api = furi_record_open("storage");
+        DirWalk* dir_walk = dir_walk_alloc(api);
+        string_t name;
+        string_init(name);
+
+        if(dir_walk_open(dir_walk, string_get_cstr(path))) {
+            FileInfo fileinfo;
+            bool read_done = false;
+
+            while(dir_walk_read(dir_walk, name, &fileinfo) == DirWalkOK) {
+                read_done = true;
+                if(fileinfo.flags & FSF_DIRECTORY) {
+                    printf("\t[D] %s\r\n", string_get_cstr(name));
+                } else {
+                    printf("\t[F] %s %lub\r\n", string_get_cstr(name), (uint32_t)(fileinfo.size));
+                }
+            }
+
+            if(!read_done) {
+                printf("\tEmpty\r\n");
+            }
+        } else {
+            storage_cli_print_error(dir_walk_get_error(dir_walk));
+        }
+
+        string_clear(name);
+        dir_walk_free(dir_walk);
+        furi_record_close("storage");
+    }
+}
+
 static void storage_cli_read(Cli* cli, string_t path) {
+    UNUSED(cli);
     Storage* api = furi_record_open("storage");
     File* file = storage_file_alloc(api);
 
@@ -295,6 +338,7 @@ static void storage_cli_write_chunk(Cli* cli, string_t path, string_t args) {
 }
 
 static void storage_cli_stat(Cli* cli, string_t path) {
+    UNUSED(cli);
     Storage* api = furi_record_open("storage");
 
     if(string_cmp_str(path, "/") == 0) {
@@ -334,6 +378,7 @@ static void storage_cli_stat(Cli* cli, string_t path) {
 }
 
 static void storage_cli_copy(Cli* cli, string_t old_path, string_t args) {
+    UNUSED(cli);
     Storage* api = furi_record_open("storage");
     string_t new_path;
     string_init(new_path);
@@ -354,6 +399,7 @@ static void storage_cli_copy(Cli* cli, string_t old_path, string_t args) {
 }
 
 static void storage_cli_remove(Cli* cli, string_t path) {
+    UNUSED(cli);
     Storage* api = furi_record_open("storage");
     FS_Error error = storage_common_remove(api, string_get_cstr(path));
 
@@ -365,6 +411,7 @@ static void storage_cli_remove(Cli* cli, string_t path) {
 }
 
 static void storage_cli_rename(Cli* cli, string_t old_path, string_t args) {
+    UNUSED(cli);
     Storage* api = furi_record_open("storage");
     string_t new_path;
     string_init(new_path);
@@ -385,6 +432,7 @@ static void storage_cli_rename(Cli* cli, string_t old_path, string_t args) {
 }
 
 static void storage_cli_mkdir(Cli* cli, string_t path) {
+    UNUSED(cli);
     Storage* api = furi_record_open("storage");
     FS_Error error = storage_common_mkdir(api, string_get_cstr(path));
 
@@ -396,6 +444,7 @@ static void storage_cli_mkdir(Cli* cli, string_t path) {
 }
 
 static void storage_cli_md5(Cli* cli, string_t path) {
+    UNUSED(cli);
     Storage* api = furi_record_open("storage");
     File* file = storage_file_alloc(api);
 
@@ -433,6 +482,7 @@ static void storage_cli_md5(Cli* cli, string_t path) {
 }
 
 void storage_cli(Cli* cli, string_t args, void* context) {
+    UNUSED(context);
     string_t cmd;
     string_t path;
     string_init(cmd);
@@ -464,6 +514,11 @@ void storage_cli(Cli* cli, string_t args, void* context) {
             break;
         }
 
+        if(string_cmp_str(cmd, "tree") == 0) {
+            storage_cli_tree(cli, path);
+            break;
+        }
+
         if(string_cmp_str(cmd, "read") == 0) {
             storage_cli_read(cli, path);
             break;
@@ -522,6 +577,8 @@ void storage_cli(Cli* cli, string_t args, void* context) {
 }
 
 static void storage_cli_factory_reset(Cli* cli, string_t args, void* context) {
+    UNUSED(args);
+    UNUSED(context);
     printf("All data will be lost. Are you sure (y/n)?\r\n");
     char c = cli_getc(cli);
     if(c == 'y' || c == 'Y') {
diff --git a/applications/storage/storage_external_api.c b/applications/storage/storage_external_api.c
index 1335c708..7f600af2 100644
--- a/applications/storage/storage_external_api.c
+++ b/applications/storage/storage_external_api.c
@@ -4,6 +4,7 @@
 #include "storage_i.h"
 #include "storage_message.h"
 #include <toolbox/stream/file_stream.h>
+#include <toolbox/dir_walk.h>
 
 #define MAX_NAME_LENGTH 256
 
@@ -332,12 +333,69 @@ FS_Error storage_common_remove(Storage* storage, const char* path) {
 FS_Error storage_common_rename(Storage* storage, const char* old_path, const char* new_path) {
     FS_Error error = storage_common_copy(storage, old_path, new_path);
     if(error == FSE_OK) {
-        error = storage_common_remove(storage, old_path);
+        if(storage_simply_remove_recursive(storage, old_path)) {
+            error = FSE_OK;
+        } else {
+            error = FSE_INTERNAL;
+        }
     }
 
     return error;
 }
 
+static FS_Error
+    storage_copy_recursive(Storage* storage, const char* old_path, const char* new_path) {
+    FS_Error error = storage_common_mkdir(storage, new_path);
+    DirWalk* dir_walk = dir_walk_alloc(storage);
+    string_t path;
+    string_t tmp_new_path;
+    string_t tmp_old_path;
+    FileInfo fileinfo;
+    string_init(path);
+    string_init(tmp_new_path);
+    string_init(tmp_old_path);
+
+    do {
+        if(error != FSE_OK) break;
+
+        if(!dir_walk_open(dir_walk, old_path)) {
+            error = dir_walk_get_error(dir_walk);
+            break;
+        }
+
+        while(1) {
+            DirWalkResult res = dir_walk_read(dir_walk, path, &fileinfo);
+
+            if(res == DirWalkError) {
+                error = dir_walk_get_error(dir_walk);
+                break;
+            } else if(res == DirWalkLast) {
+                break;
+            } else {
+                string_set(tmp_old_path, path);
+                string_right(path, strlen(old_path));
+                string_printf(tmp_new_path, "%s%s", new_path, string_get_cstr(path));
+
+                if(fileinfo.flags & FSF_DIRECTORY) {
+                    error = storage_common_mkdir(storage, string_get_cstr(tmp_new_path));
+                } else {
+                    error = storage_common_copy(
+                        storage, string_get_cstr(tmp_old_path), string_get_cstr(tmp_new_path));
+                }
+
+                if(error != FSE_OK) break;
+            }
+        }
+
+    } while(false);
+
+    string_clear(tmp_new_path);
+    string_clear(tmp_old_path);
+    string_clear(path);
+    dir_walk_free(dir_walk);
+    return error;
+}
+
 FS_Error storage_common_copy(Storage* storage, const char* old_path, const char* new_path) {
     FS_Error error;
 
@@ -346,7 +404,7 @@ FS_Error storage_common_copy(Storage* storage, const char* old_path, const char*
 
     if(error == FSE_OK) {
         if(fileinfo.flags & FSF_DIRECTORY) {
-            error = storage_common_mkdir(storage, new_path);
+            error = storage_copy_recursive(storage, old_path, new_path);
         } else {
             Stream* stream_from = file_stream_alloc(storage);
             Stream* stream_to = file_stream_alloc(storage);
diff --git a/applications/storage/storage_glue.h b/applications/storage/storage_glue.h
index 21147dce..0d50e39b 100644
--- a/applications/storage/storage_glue.h
+++ b/applications/storage/storage_glue.h
@@ -72,4 +72,4 @@ bool storage_pop_storage_file(File* file, StorageData* storage);
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/applications/storage/storage_internal_api.c b/applications/storage/storage_internal_api.c
index 754ae0dd..ee49d672 100644
--- a/applications/storage/storage_internal_api.c
+++ b/applications/storage/storage_internal_api.c
@@ -19,4 +19,4 @@ FS_Error storage_int_restore(Storage* api, const char* srcname) {
                    tar_archive_unpack_to(archive, INT_PATH);
     tar_archive_free(archive);
     return success ? FSE_OK : FSE_INTERNAL;
-}
\ No newline at end of file
+}
diff --git a/applications/storage/storage_message.h b/applications/storage/storage_message.h
index 0e58fff2..f3aeaf32 100644
--- a/applications/storage/storage_message.h
+++ b/applications/storage/storage_message.h
@@ -131,4 +131,4 @@ typedef struct {
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/applications/storage/storage_processing.c b/applications/storage/storage_processing.c
index 6120a345..30e6b5e7 100644
--- a/applications/storage/storage_processing.c
+++ b/applications/storage/storage_processing.c
@@ -40,7 +40,7 @@ static StorageData* get_storage_by_file(File* file, StorageData* storages) {
 }
 
 static const char* remove_vfs(const char* path) {
-    return path + MIN(4, strlen(path));
+    return path + MIN(4u, strlen(path));
 }
 
 static const char* ext_path = "/ext";
diff --git a/applications/storage/storage_processing.h b/applications/storage/storage_processing.h
index fe2cd1a6..bb779c7a 100644
--- a/applications/storage/storage_processing.h
+++ b/applications/storage/storage_processing.h
@@ -13,4 +13,4 @@ void storage_process_message(Storage* app, StorageMessage* message);
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/applications/storage/storage_sd_api.c b/applications/storage/storage_sd_api.c
index 78064624..9e9ca45c 100644
--- a/applications/storage/storage_sd_api.c
+++ b/applications/storage/storage_sd_api.c
@@ -18,4 +18,4 @@ const char* sd_api_get_fs_type_text(SDFsType fs_type) {
         return "UNKNOWN";
         break;
     }
-}
\ No newline at end of file
+}
diff --git a/applications/storage/storage_sd_api.h b/applications/storage/storage_sd_api.h
index 2db35866..f8336095 100644
--- a/applications/storage/storage_sd_api.h
+++ b/applications/storage/storage_sd_api.h
@@ -30,4 +30,4 @@ const char* sd_api_get_fs_type_text(SDFsType fs_type);
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/applications/storage/storage_test_app.c b/applications/storage/storage_test_app.c
index 096276ad..f11d2d72 100644
--- a/applications/storage/storage_test_app.c
+++ b/applications/storage/storage_test_app.c
@@ -316,6 +316,7 @@ static void do_test_end(Storage* api, const char* path) {
 }
 
 int32_t storage_test_app(void* p) {
+    UNUSED(p);
     Storage* api = furi_record_open("storage");
     do_test_start(api, "/int");
     do_test_start(api, "/any");
diff --git a/applications/storage/storages/sd_notify.c b/applications/storage/storages/sd_notify.c
index 8c38ac8e..25ec67c1 100644
--- a/applications/storage/storages/sd_notify.c
+++ b/applications/storage/storages/sd_notify.c
@@ -79,4 +79,4 @@ void sd_notify_eject(NotificationApp* notifications) {
 
 void sd_notify_error(NotificationApp* notifications) {
     notification_message(notifications, &sd_sequence_error);
-}
\ No newline at end of file
+}
diff --git a/applications/storage/storages/sd_notify.h b/applications/storage/storages/sd_notify.h
index 49e82edf..f5aefc74 100644
--- a/applications/storage/storages/sd_notify.h
+++ b/applications/storage/storages/sd_notify.h
@@ -14,4 +14,4 @@ void sd_notify_error(NotificationApp* notifications);
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/applications/storage/storages/storage_ext.c b/applications/storage/storages/storage_ext.c
index bf201d56..49c52f77 100644
--- a/applications/storage/storages/storage_ext.c
+++ b/applications/storage/storages/storage_ext.c
@@ -113,6 +113,7 @@ FS_Error sd_unmount_card(StorageData* storage) {
 
 FS_Error sd_format_card(StorageData* storage) {
 #ifdef FURI_RAM_EXEC
+    UNUSED(storage);
     return FSE_NOT_READY;
 #else
     uint8_t* work_area;
@@ -349,6 +350,10 @@ static uint16_t
 static uint16_t
     storage_ext_file_write(void* ctx, File* file, const void* buff, uint16_t const bytes_to_write) {
 #ifdef FURI_RAM_EXEC
+    UNUSED(ctx);
+    UNUSED(file);
+    UNUSED(buff);
+    UNUSED(bytes_to_write);
     return FSE_NOT_READY;
 #else
     StorageData* storage = ctx;
@@ -389,6 +394,8 @@ static uint64_t storage_ext_file_tell(void* ctx, File* file) {
 
 static bool storage_ext_file_truncate(void* ctx, File* file) {
 #ifdef FURI_RAM_EXEC
+    UNUSED(ctx);
+    UNUSED(file);
     return FSE_NOT_READY;
 #else
     StorageData* storage = ctx;
@@ -402,6 +409,8 @@ static bool storage_ext_file_truncate(void* ctx, File* file) {
 
 static bool storage_ext_file_sync(void* ctx, File* file) {
 #ifdef FURI_RAM_EXEC
+    UNUSED(ctx);
+    UNUSED(file);
     return FSE_NOT_READY;
 #else
     StorageData* storage = ctx;
@@ -497,6 +506,7 @@ static bool storage_ext_dir_rewind(void* ctx, File* file) {
 /******************* Common FS Functions *******************/
 
 static FS_Error storage_ext_common_stat(void* ctx, const char* path, FileInfo* fileinfo) {
+    UNUSED(ctx);
     SDFileInfo _fileinfo;
     SDError result = f_stat(path, &_fileinfo);
 
@@ -511,7 +521,9 @@ static FS_Error storage_ext_common_stat(void* ctx, const char* path, FileInfo* f
 }
 
 static FS_Error storage_ext_common_remove(void* ctx, const char* path) {
+    UNUSED(ctx);
 #ifdef FURI_RAM_EXEC
+    UNUSED(path);
     return FSE_NOT_READY;
 #else
     SDError result = f_unlink(path);
@@ -520,7 +532,9 @@ static FS_Error storage_ext_common_remove(void* ctx, const char* path) {
 }
 
 static FS_Error storage_ext_common_mkdir(void* ctx, const char* path) {
+    UNUSED(ctx);
 #ifdef FURI_RAM_EXEC
+    UNUSED(path);
     return FSE_NOT_READY;
 #else
     SDError result = f_mkdir(path);
@@ -533,7 +547,11 @@ static FS_Error storage_ext_common_fs_info(
     const char* fs_path,
     uint64_t* total_space,
     uint64_t* free_space) {
+    UNUSED(fs_path);
 #ifdef FURI_RAM_EXEC
+    UNUSED(ctx);
+    UNUSED(total_space);
+    UNUSED(free_space);
     return FSE_NOT_READY;
 #else
     StorageData* storage = ctx;
@@ -610,4 +628,4 @@ void storage_ext_init(StorageData* storage) {
 
     // do not notify on first launch, notifications app is waiting for our thread to read settings
     storage_ext_tick_internal(storage, false);
-}
\ No newline at end of file
+}
diff --git a/applications/storage/storages/storage_ext.h b/applications/storage/storages/storage_ext.h
index fa5a5ab1..07ddbcf2 100644
--- a/applications/storage/storages/storage_ext.h
+++ b/applications/storage/storages/storage_ext.h
@@ -13,4 +13,4 @@ FS_Error sd_format_card(StorageData* storage);
 FS_Error sd_card_info(StorageData* storage, SDInfo* sd_info);
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/applications/storage/storages/storage_int.c b/applications/storage/storages/storage_int.c
index 7f7dd770..291fb426 100644
--- a/applications/storage/storages/storage_int.c
+++ b/applications/storage/storages/storage_int.c
@@ -129,6 +129,7 @@ static int storage_int_device_erase(const struct lfs_config* c, lfs_block_t bloc
 }
 
 static int storage_int_device_sync(const struct lfs_config* c) {
+    UNUSED(c);
     FURI_LOG_D(TAG, "Device sync: skipping, cause ");
     return 0;
 }
@@ -648,6 +649,7 @@ static FS_Error storage_int_common_fs_info(
     const char* fs_path,
     uint64_t* total_space,
     uint64_t* free_space) {
+    UNUSED(fs_path);
     StorageData* storage = ctx;
 
     lfs_t* lfs = lfs_get_from_storage(storage);
diff --git a/applications/storage/storages/storage_int.h b/applications/storage/storages/storage_int.h
index 40588f68..456d7240 100644
--- a/applications/storage/storages/storage_int.h
+++ b/applications/storage/storages/storage_int.h
@@ -10,4 +10,4 @@ void storage_int_init(StorageData* storage);
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/applications/storage_settings/scenes/storage_settings_scene_config.h b/applications/storage_settings/scenes/storage_settings_scene_config.h
index 7628d143..18e7ba5a 100644
--- a/applications/storage_settings/scenes/storage_settings_scene_config.h
+++ b/applications/storage_settings/scenes/storage_settings_scene_config.h
@@ -6,4 +6,4 @@ ADD_SCENE(storage_settings, formatting, Formatting)
 ADD_SCENE(storage_settings, sd_info, SDInfo)
 ADD_SCENE(storage_settings, internal_info, InternalInfo)
 ADD_SCENE(storage_settings, benchmark, Benchmark)
-ADD_SCENE(storage_settings, factory_reset, FactoryReset)
\ No newline at end of file
+ADD_SCENE(storage_settings, factory_reset, FactoryReset)
diff --git a/applications/storage_settings/storage_settings.c b/applications/storage_settings/storage_settings.c
index bc982b16..b89fdf06 100644
--- a/applications/storage_settings/storage_settings.c
+++ b/applications/storage_settings/storage_settings.c
@@ -66,6 +66,7 @@ static void storage_settings_free(StorageSettings* app) {
 }
 
 int32_t storage_settings_app(void* p) {
+    UNUSED(p);
     StorageSettings* app = storage_settings_alloc();
 
     view_dispatcher_run(app->view_dispatcher);
diff --git a/applications/storage_settings/storage_settings.h b/applications/storage_settings/storage_settings.h
index be77a52d..f2d071c4 100644
--- a/applications/storage_settings/storage_settings.h
+++ b/applications/storage_settings/storage_settings.h
@@ -44,4 +44,4 @@ typedef enum {
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/applications/subghz/helpers/subghz_frequency_analyzer_worker.c b/applications/subghz/helpers/subghz_frequency_analyzer_worker.c
index b6b3a1ed..c0e1fdba 100644
--- a/applications/subghz/helpers/subghz_frequency_analyzer_worker.c
+++ b/applications/subghz/helpers/subghz_frequency_analyzer_worker.c
@@ -44,7 +44,7 @@ static uint32_t subghz_frequency_analyzer_worker_expRunningAverageAdaptive(
     float k;
     float newValFloat = newVal;
     // the sharpness of the filter depends on the absolute value of the difference
-    if(abs(newValFloat - instance->filVal) > 500000)
+    if(fabs(newValFloat - instance->filVal) > 500000)
         k = 0.9;
     else
         k = 0.03;
@@ -71,6 +71,7 @@ static int32_t subghz_frequency_analyzer_worker_thread(void* context) {
     furi_hal_subghz_load_preset(FuriHalSubGhzPresetOok650Async);
     furi_hal_subghz_set_frequency(433920000);
     furi_hal_subghz_flush_rx();
+    furi_hal_subghz_set_path(FuriHalSubGhzPathIsolate);
     furi_hal_subghz_rx();
 
     while(instance->worker_running) {
diff --git a/applications/subghz/helpers/subghz_testing.h b/applications/subghz/helpers/subghz_testing.h
index 3a154966..29ce578a 100644
--- a/applications/subghz/helpers/subghz_testing.h
+++ b/applications/subghz/helpers/subghz_testing.h
@@ -3,4 +3,4 @@
 
 extern const uint32_t subghz_frequencies_testing[];
 extern const uint32_t subghz_frequencies_count_testing;
-extern const uint32_t subghz_frequencies_433_92_testing;
\ No newline at end of file
+extern const uint32_t subghz_frequencies_433_92_testing;
diff --git a/applications/subghz/scenes/subghz_scene_config.h b/applications/subghz/scenes/subghz_scene_config.h
index 71cd2668..1cb217ad 100644
--- a/applications/subghz/scenes/subghz_scene_config.h
+++ b/applications/subghz/scenes/subghz_scene_config.h
@@ -21,4 +21,4 @@ ADD_SCENE(subghz, frequency_analyzer, FrequencyAnalyzer)
 ADD_SCENE(subghz, read_raw, ReadRAW)
 ADD_SCENE(subghz, more_raw, MoreRAW)
 ADD_SCENE(subghz, delete_raw, DeleteRAW)
-ADD_SCENE(subghz, need_saving, NeedSaving)
\ No newline at end of file
+ADD_SCENE(subghz, need_saving, NeedSaving)
diff --git a/applications/subghz/scenes/subghz_scene_read_raw.c b/applications/subghz/scenes/subghz_scene_read_raw.c
index 88d0686b..767f0924 100644
--- a/applications/subghz/scenes/subghz_scene_read_raw.c
+++ b/applications/subghz/scenes/subghz_scene_read_raw.c
@@ -202,7 +202,8 @@ bool subghz_scene_read_raw_on_event(void* context, SceneManagerEvent event) {
                         DOLPHIN_DEED(DolphinDeedSubGhzSend);
                         // set callback end tx
                         subghz_protocol_raw_file_encoder_worker_set_callback_end(
-                            (SubGhzProtocolEncoderRAW*)subghz->txrx->transmitter->protocol_instance,
+                            (SubGhzProtocolEncoderRAW*)subghz_transmitter_get_protocol_instance(
+                                subghz->txrx->transmitter),
                             subghz_scene_read_raw_callback_end_tx,
                             subghz);
                         subghz->state_notifications = SubGhzNotificationStateTx;
diff --git a/applications/subghz/scenes/subghz_scene_receiver.c b/applications/subghz/scenes/subghz_scene_receiver.c
index 19242def..01005148 100644
--- a/applications/subghz/scenes/subghz_scene_receiver.c
+++ b/applications/subghz/scenes/subghz_scene_receiver.c
@@ -60,7 +60,6 @@ static void subghz_scene_add_to_history_callback(
 
     if(subghz_history_add_to_history(
            subghz->txrx->history, decoder_base, subghz->txrx->frequency, subghz->txrx->preset)) {
-        subghz_receiver_reset(receiver);
         string_reset(str_buff);
 
         subghz->state_notifications = SubGhzNotificationStateRxDone;
@@ -75,6 +74,7 @@ static void subghz_scene_add_to_history_callback(
 
         subghz_scene_receiver_update_statusbar(subghz);
     }
+    subghz_receiver_reset(receiver);
     string_clear(str_buff);
     subghz->txrx->rx_key_state = SubGhzRxKeyStateAddKey;
 }
@@ -191,5 +191,5 @@ bool subghz_scene_receiver_on_event(void* context, SceneManagerEvent event) {
 }
 
 void subghz_scene_receiver_on_exit(void* context) {
-    // SubGhz* subghz = context;
+    UNUSED(context);
 }
diff --git a/applications/subghz/scenes/subghz_scene_receiver_config.c b/applications/subghz/scenes/subghz_scene_receiver_config.c
index d98f45af..7c2d031f 100644
--- a/applications/subghz/scenes/subghz_scene_receiver_config.c
+++ b/applications/subghz/scenes/subghz_scene_receiver_config.c
@@ -61,6 +61,7 @@ uint8_t subghz_scene_receiver_config_hopper_value_index(
     uint8_t values_count,
     void* context) {
     furi_assert(context);
+    UNUSED(values_count);
     SubGhz* subghz = context;
 
     if(value == values[0]) {
@@ -188,7 +189,8 @@ void subghz_scene_receiver_config_on_enter(void* context) {
 }
 
 bool subghz_scene_receiver_config_on_event(void* context, SceneManagerEvent event) {
-    //SubGhz* subghz = context;
+    UNUSED(context);
+    UNUSED(event);
     return false;
 }
 
diff --git a/applications/subghz/scenes/subghz_scene_saved.c b/applications/subghz/scenes/subghz_scene_saved.c
index ae64b797..62ade350 100644
--- a/applications/subghz/scenes/subghz_scene_saved.c
+++ b/applications/subghz/scenes/subghz_scene_saved.c
@@ -16,10 +16,11 @@ void subghz_scene_saved_on_enter(void* context) {
 }
 
 bool subghz_scene_saved_on_event(void* context, SceneManagerEvent event) {
-    // SubGhz* subghz = context;
+    UNUSED(context);
+    UNUSED(event);
     return false;
 }
 
 void subghz_scene_saved_on_exit(void* context) {
-    // SubGhz* subghz = context;
+    UNUSED(context);
 }
diff --git a/applications/subghz/scenes/subghz_scene_set_type.c b/applications/subghz/scenes/subghz_scene_set_type.c
index 964b85b2..9dad8cd9 100644
--- a/applications/subghz/scenes/subghz_scene_set_type.c
+++ b/applications/subghz/scenes/subghz_scene_set_type.c
@@ -268,7 +268,7 @@ bool subghz_scene_set_type_on_event(void* context, SceneManagerEvent event) {
                 subghz->txrx->environment, SUBGHZ_PROTOCOL_KEELOQ_NAME);
             if(subghz->txrx->transmitter) {
                 subghz_protocol_keeloq_create_data(
-                    subghz->txrx->transmitter->protocol_instance,
+                    subghz_transmitter_get_protocol_instance(subghz->txrx->transmitter),
                     subghz->txrx->fff_data,
                     key & 0x0FFFFFFF,
                     0x2,
@@ -292,7 +292,7 @@ bool subghz_scene_set_type_on_event(void* context, SceneManagerEvent event) {
                 subghz->txrx->environment, SUBGHZ_PROTOCOL_KEELOQ_NAME);
             if(subghz->txrx->transmitter) {
                 subghz_protocol_keeloq_create_data(
-                    subghz->txrx->transmitter->protocol_instance,
+                    subghz_transmitter_get_protocol_instance(subghz->txrx->transmitter),
                     subghz->txrx->fff_data,
                     key & 0x0FFFFFFF,
                     0x2,
diff --git a/applications/subghz/scenes/subghz_scene_show_only_rx.c b/applications/subghz/scenes/subghz_scene_show_only_rx.c
index d5069940..48fa751e 100644
--- a/applications/subghz/scenes/subghz_scene_show_only_rx.c
+++ b/applications/subghz/scenes/subghz_scene_show_only_rx.c
@@ -26,7 +26,7 @@ void subghz_scene_show_only_rx_on_enter(void* context) {
     view_dispatcher_switch_to_view(subghz->view_dispatcher, SubGhzViewIdPopup);
 }
 
-const bool subghz_scene_show_only_rx_on_event(void* context, SceneManagerEvent event) {
+bool subghz_scene_show_only_rx_on_event(void* context, SceneManagerEvent event) {
     SubGhz* subghz = context;
     if(event.type == SceneManagerEventTypeCustom) {
         if(event.event == SubGhzCustomEventSceneShowOnlyRX) {
diff --git a/applications/subghz/scenes/subghz_scene_test_carrier.c b/applications/subghz/scenes/subghz_scene_test_carrier.c
index c6d336ea..9677792b 100644
--- a/applications/subghz/scenes/subghz_scene_test_carrier.c
+++ b/applications/subghz/scenes/subghz_scene_test_carrier.c
@@ -26,5 +26,5 @@ bool subghz_scene_test_carrier_on_event(void* context, SceneManagerEvent event)
 }
 
 void subghz_scene_test_carrier_on_exit(void* context) {
-    // SubGhz* subghz = context;
+    UNUSED(context);
 }
diff --git a/applications/subghz/scenes/subghz_scene_test_packet.c b/applications/subghz/scenes/subghz_scene_test_packet.c
index 243dfd55..99f0ab17 100644
--- a/applications/subghz/scenes/subghz_scene_test_packet.c
+++ b/applications/subghz/scenes/subghz_scene_test_packet.c
@@ -26,5 +26,5 @@ bool subghz_scene_test_packet_on_event(void* context, SceneManagerEvent event) {
 }
 
 void subghz_scene_test_packet_on_exit(void* context) {
-    // SubGhz* subghz = context;
+    UNUSED(context);
 }
diff --git a/applications/subghz/scenes/subghz_scene_test_static.c b/applications/subghz/scenes/subghz_scene_test_static.c
index 2ca47a08..10e6d02a 100644
--- a/applications/subghz/scenes/subghz_scene_test_static.c
+++ b/applications/subghz/scenes/subghz_scene_test_static.c
@@ -26,5 +26,5 @@ bool subghz_scene_test_static_on_event(void* context, SceneManagerEvent event) {
 }
 
 void subghz_scene_test_static_on_exit(void* context) {
-    // SubGhz* subghz = context;
+    UNUSED(context);
 }
diff --git a/applications/subghz/subghz.h b/applications/subghz/subghz.h
index 16e1e857..54d3017e 100644
--- a/applications/subghz/subghz.h
+++ b/applications/subghz/subghz.h
@@ -1,3 +1,3 @@
 #pragma once
 
-typedef struct SubGhz SubGhz;
\ No newline at end of file
+typedef struct SubGhz SubGhz;
diff --git a/applications/subghz/subghz_cli.c b/applications/subghz/subghz_cli.c
index 65ea0cf2..f919e1cf 100644
--- a/applications/subghz/subghz_cli.c
+++ b/applications/subghz/subghz_cli.c
@@ -20,6 +20,7 @@
     "299999755...348000000 or 386999938...464000000 or 778999847...928000000"
 
 void subghz_cli_command_tx_carrier(Cli* cli, string_t args, void* context) {
+    UNUSED(context);
     uint32_t frequency = 433920000;
 
     if(string_size(args)) {
@@ -63,6 +64,7 @@ void subghz_cli_command_tx_carrier(Cli* cli, string_t args, void* context) {
 }
 
 void subghz_cli_command_rx_carrier(Cli* cli, string_t args, void* context) {
+    UNUSED(context);
     uint32_t frequency = 433920000;
 
     if(string_size(args)) {
@@ -92,7 +94,7 @@ void subghz_cli_command_rx_carrier(Cli* cli, string_t args, void* context) {
 
     while(!cli_cmd_interrupt_received(cli)) {
         osDelay(250);
-        printf("RSSI: %03.1fdbm\r", furi_hal_subghz_get_rssi());
+        printf("RSSI: %03.1fdbm\r", (double)furi_hal_subghz_get_rssi());
         fflush(stdout);
     }
 
@@ -103,6 +105,7 @@ void subghz_cli_command_rx_carrier(Cli* cli, string_t args, void* context) {
 }
 
 void subghz_cli_command_tx(Cli* cli, string_t args, void* context) {
+    UNUSED(context);
     uint32_t frequency = 433920000;
     uint32_t key = 0x0074BADE;
     uint32_t repeat = 10;
@@ -218,6 +221,7 @@ static void subghz_cli_command_rx_callback(
 }
 
 void subghz_cli_command_rx(Cli* cli, string_t args, void* context) {
+    UNUSED(context);
     uint32_t frequency = 433920000;
 
     if(string_size(args)) {
@@ -296,6 +300,7 @@ void subghz_cli_command_rx(Cli* cli, string_t args, void* context) {
 }
 
 void subghz_cli_command_decode_raw(Cli* cli, string_t args, void* context) {
+    UNUSED(context);
     string_t file_name;
     string_init(file_name);
     string_set(file_name, "/any/subghz/test.sub");
@@ -423,6 +428,7 @@ static void subghz_cli_command_print_usage() {
 }
 
 static void subghz_cli_command_encrypt_keeloq(Cli* cli, string_t args) {
+    UNUSED(cli);
     uint8_t iv[16];
 
     string_t source;
@@ -465,6 +471,7 @@ static void subghz_cli_command_encrypt_keeloq(Cli* cli, string_t args) {
 }
 
 static void subghz_cli_command_encrypt_raw(Cli* cli, string_t args) {
+    UNUSED(cli);
     uint8_t iv[16];
 
     string_t source;
diff --git a/applications/subghz/views/receiver.c b/applications/subghz/views/receiver.c
index 03ba5bd2..7b19cbcf 100644
--- a/applications/subghz/views/receiver.c
+++ b/applications/subghz/views/receiver.c
@@ -10,7 +10,7 @@
 
 #define FRAME_HEIGHT 12
 #define MAX_LEN_PX 100
-#define MENU_ITEMS 4
+#define MENU_ITEMS 4u
 
 typedef struct {
     string_t item_str;
@@ -68,12 +68,13 @@ static void subghz_view_receiver_update_offset(SubGhzViewReceiver* subghz_receiv
             size_t history_item = model->history_item;
             uint16_t bounds = history_item > 3 ? 2 : history_item;
 
-            if(history_item > 3 && model->idx >= history_item - 1) {
+            if(history_item > 3 && model->idx >= (int16_t)(history_item - 1)) {
                 model->list_offset = model->idx - 3;
             } else if(model->list_offset < model->idx - bounds) {
-                model->list_offset = CLAMP(model->list_offset + 1, history_item - bounds, 0);
+                model->list_offset =
+                    CLAMP(model->list_offset + 1, (int16_t)(history_item - bounds), 0);
             } else if(model->list_offset > model->idx - bounds) {
-                model->list_offset = CLAMP(model->idx - 1, history_item - bounds, 0);
+                model->list_offset = CLAMP(model->idx - 1, (int16_t)(history_item - bounds), 0);
             }
             return true;
         });
@@ -157,7 +158,7 @@ void subghz_view_receiver_draw(Canvas* canvas, SubGhzViewReceiverModel* model) {
     SubGhzReceiverMenuItem* item_menu;
 
     for(size_t i = 0; i < MIN(model->history_item, MENU_ITEMS); ++i) {
-        size_t idx = CLAMP(i + model->list_offset, model->history_item, 0);
+        size_t idx = CLAMP((uint16_t)(i + model->list_offset), model->history_item, 0);
         item_menu = SubGhzReceiverMenuItemArray_get(model->history->data, idx);
         string_set(str_buff, item_menu->item_str);
         elements_string_fit_width(canvas, str_buff, scrollbar ? MAX_LEN_PX - 6 : MAX_LEN_PX);
@@ -218,7 +219,6 @@ bool subghz_view_receiver_input(InputEvent* event, void* context) {
 
 void subghz_view_receiver_enter(void* context) {
     furi_assert(context);
-    //SubGhzViewReceiver* subghz_receiver = context;
 }
 
 void subghz_view_receiver_exit(void* context) {
diff --git a/applications/subghz/views/subghz_test_packet.c b/applications/subghz/views/subghz_test_packet.c
index fea3bd89..57f85085 100644
--- a/applications/subghz/views/subghz_test_packet.c
+++ b/applications/subghz/views/subghz_test_packet.c
@@ -57,6 +57,7 @@ static void subghz_test_packet_rx_callback(bool level, uint32_t duration, void*
 
 //todo
 static void subghz_test_packet_rx_pt_callback(SubGhzDecoderPrinceton* parser, void* context) {
+    UNUSED(parser);
     furi_assert(context);
     SubGhzTestPacket* instance = context;
     instance->packet_rx++;
diff --git a/applications/system/system_settings.c b/applications/system/system_settings.c
index f06292ec..97017c8d 100644
--- a/applications/system/system_settings.c
+++ b/applications/system/system_settings.c
@@ -46,6 +46,7 @@ static void debug_changed(VariableItem* item) {
 }
 
 static uint32_t system_settings_exit(void* context) {
+    UNUSED(context);
     return VIEW_NONE;
 }
 
@@ -103,6 +104,7 @@ void system_settings_free(SystemSettings* app) {
 }
 
 int32_t system_settings_app(void* p) {
+    UNUSED(p);
     SystemSettings* app = system_settings_alloc();
     view_dispatcher_run(app->view_dispatcher);
     system_settings_free(app);
diff --git a/applications/u2f/scenes/u2f_scene_main.c b/applications/u2f/scenes/u2f_scene_main.c
index d0957b59..f6264338 100644
--- a/applications/u2f/scenes/u2f_scene_main.c
+++ b/applications/u2f/scenes/u2f_scene_main.c
@@ -8,6 +8,7 @@
 #define U2F_SUCCESS_TIMEOUT 3000
 
 static void u2f_scene_main_ok_callback(InputType type, void* context) {
+    UNUSED(type);
     furi_assert(context);
     U2fApp* app = context;
     view_dispatcher_send_custom_event(app->view_dispatcher, U2fCustomEventConfirm);
diff --git a/applications/u2f/u2f_app.c b/applications/u2f/u2f_app.c
index 8a673dbc..2c3ff562 100644
--- a/applications/u2f/u2f_app.c
+++ b/applications/u2f/u2f_app.c
@@ -86,6 +86,7 @@ void u2f_app_free(U2fApp* app) {
 }
 
 int32_t u2f_app(void* p) {
+    UNUSED(p);
     U2fApp* u2f_app = u2f_app_alloc();
 
     view_dispatcher_run(u2f_app->view_dispatcher);
diff --git a/applications/u2f/views/u2f_view.c b/applications/u2f/views/u2f_view.c
index d04c656d..11e2c9b0 100644
--- a/applications/u2f/views/u2f_view.c
+++ b/applications/u2f/views/u2f_view.c
@@ -86,6 +86,7 @@ void u2f_view_set_ok_callback(U2fView* u2f, U2fOkCallback callback, void* contex
     furi_assert(callback);
     with_view_model(
         u2f->view, (U2fModel * model) {
+            UNUSED(model);
             u2f->callback = callback;
             u2f->context = context;
             return false;
diff --git a/applications/unit_tests/flipper_format/flipper_format_string_test.c b/applications/unit_tests/flipper_format/flipper_format_string_test.c
index ebc3008f..7158ffd8 100644
--- a/applications/unit_tests/flipper_format/flipper_format_string_test.c
+++ b/applications/unit_tests/flipper_format/flipper_format_string_test.c
@@ -334,4 +334,4 @@ MU_TEST_SUITE(flipper_format_string_suite) {
 int run_minunit_test_flipper_format_string() {
     MU_RUN_SUITE(flipper_format_string_suite);
     return MU_EXIT_CODE;
-}
\ No newline at end of file
+}
diff --git a/applications/unit_tests/furi_pubsub_test.c b/applications/unit_tests/furi_pubsub_test.c
index 010a00ab..57c970b8 100644
--- a/applications/unit_tests/furi_pubsub_test.c
+++ b/applications/unit_tests/furi_pubsub_test.c
@@ -42,4 +42,4 @@ void test_furi_pubsub() {
 
     // delete pubsub case
     furi_pubsub_free(test_pubsub);
-}
\ No newline at end of file
+}
diff --git a/applications/unit_tests/infrared_decoder_encoder/infrared_decoder_encoder_test.c b/applications/unit_tests/infrared_decoder_encoder/infrared_decoder_encoder_test.c
index ca9120ed..0c3e685d 100644
--- a/applications/unit_tests/infrared_decoder_encoder/infrared_decoder_encoder_test.c
+++ b/applications/unit_tests/infrared_decoder_encoder/infrared_decoder_encoder_test.c
@@ -55,7 +55,7 @@ static void run_encoder_fill_array(
     bool level = false;
     bool level_read;
     InfraredStatus status = InfraredStatusError;
-    int i = 0;
+    size_t i = 0;
     bool first = true;
 
     while(1) {
@@ -100,7 +100,7 @@ static void run_encoder(
         run_encoder_fill_array(encoder_handler, timings, &timings_len, NULL);
         furi_check(timings_len <= 200);
 
-        for(int i = 0; i < timings_len; ++i, ++j) {
+        for(size_t i = 0; i < timings_len; ++i, ++j) {
             mu_check(MATCH_TIMING(timings[i], expected_timings[j], 120));
             mu_assert(j < expected_timings_len, "encoded more timings than expected");
         }
@@ -127,7 +127,7 @@ static void
         furi_check(timings_len <= 200);
 
         const InfraredMessage* message_decoded = 0;
-        for(int i = 0; i < timings_len; ++i) {
+        for(size_t i = 0; i < timings_len; ++i) {
             message_decoded = infrared_decode(decoder_handler, level, timings[i]);
             if((i == timings_len - 2) && level && message_decoded) {
                 /* In case we end with space timing - message can be decoded at last mark */
diff --git a/applications/unit_tests/minunit_vars.h b/applications/unit_tests/minunit_vars.h
index 7ef5f825..8289fbe2 100644
--- a/applications/unit_tests/minunit_vars.h
+++ b/applications/unit_tests/minunit_vars.h
@@ -12,4 +12,4 @@ double minunit_real_timer = 0;
 double minunit_proc_timer = 0;
 
 /*  Last message */
-char minunit_last_message[MINUNIT_MESSAGE_LEN];
\ No newline at end of file
+char minunit_last_message[MINUNIT_MESSAGE_LEN];
diff --git a/applications/unit_tests/minunit_vars_ex.h b/applications/unit_tests/minunit_vars_ex.h
index e2743d1c..7d6a486c 100644
--- a/applications/unit_tests/minunit_vars_ex.h
+++ b/applications/unit_tests/minunit_vars_ex.h
@@ -12,4 +12,4 @@ extern double minunit_real_timer;
 extern double minunit_proc_timer;
 
 /*  Last message */
-extern char minunit_last_message[MINUNIT_MESSAGE_LEN];
\ No newline at end of file
+extern char minunit_last_message[MINUNIT_MESSAGE_LEN];
diff --git a/applications/unit_tests/rpc/rpc_test.c b/applications/unit_tests/rpc/rpc_test.c
index 2a52ebb0..2f97343e 100644
--- a/applications/unit_tests/rpc/rpc_test.c
+++ b/applications/unit_tests/rpc/rpc_test.c
@@ -45,7 +45,7 @@ static RpcSessionContext rpc_session[TEST_RPC_SESSIONS];
 #define TAG "UnitTestsRpc"
 #define MAX_RECEIVE_OUTPUT_TIMEOUT 3000
 #define MAX_NAME_LENGTH 255
-#define MAX_DATA_SIZE 512 // have to be exact as in rpc_storage.c
+#define MAX_DATA_SIZE 512u // have to be exact as in rpc_storage.c
 #define TEST_DIR TEST_DIR_NAME "/"
 #define TEST_DIR_NAME "/ext/unit_tests_tmp"
 #define MD5SUM_SIZE 16
@@ -217,6 +217,8 @@ static void test_rpc_print_message_list(MsgList_t msg_list) {
             rpc_print_message(msg);
         }
     MsgList_reverse(msg_list);
+#else
+    UNUSED(msg_list);
 #endif
 }
 
@@ -494,7 +496,7 @@ static void test_rpc_compare_messages(PB_Main* result, PB_Main* expected) {
         size_t expected_msg_files = expected->content.storage_list_response.file_count;
         size_t result_msg_files = result->content.storage_list_response.file_count;
         mu_check(result_msg_files == expected_msg_files);
-        for(int i = 0; i < expected_msg_files; ++i) {
+        for(size_t i = 0; i < expected_msg_files; ++i) {
             PB_Storage_File* result_msg_file = &result->content.storage_list_response.file[i];
             PB_Storage_File* expected_msg_file = &expected->content.storage_list_response.file[i];
             test_rpc_compare_file(result_msg_file, expected_msg_file);
@@ -794,7 +796,7 @@ static void test_create_file(const char* path, size_t size) {
 
     if(storage_file_open(file, path, FSAM_WRITE, FSOM_CREATE_ALWAYS)) {
         uint8_t buf[128] = {0};
-        for(int i = 0; i < sizeof(buf); ++i) {
+        for(size_t i = 0; i < sizeof(buf); ++i) {
             buf[i] = '0' + (i % 10);
         }
         while(size) {
@@ -928,7 +930,7 @@ static void test_storage_write_run(
     MsgList_init(expected_msg_list);
 
     uint8_t* buf = malloc(write_size);
-    for(int i = 0; i < write_size; ++i) {
+    for(size_t i = 0; i < write_size; ++i) {
         buf[i] = '0' + (i % 10);
     }
 
@@ -1551,8 +1553,9 @@ MU_TEST_SUITE(test_rpc_app) {
 
 static void
     test_send_rubbish(RpcSession* session, const char* pattern, size_t pattern_size, size_t size) {
+    UNUSED(session);
     uint8_t* buf = malloc(size);
-    for(int i = 0; i < size; ++i) {
+    for(size_t i = 0; i < size; ++i) {
         buf[i] = pattern[i % pattern_size];
     }
 
diff --git a/applications/unit_tests/storage/dirwalk_test.c b/applications/unit_tests/storage/dirwalk_test.c
new file mode 100644
index 00000000..25e12259
--- /dev/null
+++ b/applications/unit_tests/storage/dirwalk_test.c
@@ -0,0 +1,272 @@
+#include "../minunit.h"
+#include <furi.h>
+#include <m-dict.h>
+#include <toolbox/dir_walk.h>
+
+static const char* const storage_test_dirwalk_paths[] = {
+    "1",
+    "11",
+    "111",
+    "1/2",
+    "1/22",
+    "1/222",
+    "11/2",
+    "111/2",
+    "111/22",
+    "111/22/33",
+};
+
+static const char* const storage_test_dirwalk_files[] = {
+    "file1.test",
+    "file2.test",
+    "file3.ext_test",
+    "1/file1.test",
+    "111/22/33/file1.test",
+    "111/22/33/file2.test",
+    "111/22/33/file3.ext_test",
+    "111/22/33/file4.ext_test",
+};
+
+typedef struct {
+    const char* const path;
+    bool is_dir;
+} StorageTestPathDesc;
+
+const StorageTestPathDesc storage_test_dirwalk_full[] = {
+    {.path = "1", .is_dir = true},
+    {.path = "11", .is_dir = true},
+    {.path = "111", .is_dir = true},
+    {.path = "1/2", .is_dir = true},
+    {.path = "1/22", .is_dir = true},
+    {.path = "1/222", .is_dir = true},
+    {.path = "11/2", .is_dir = true},
+    {.path = "111/2", .is_dir = true},
+    {.path = "111/22", .is_dir = true},
+    {.path = "111/22/33", .is_dir = true},
+    {.path = "file1.test", .is_dir = false},
+    {.path = "file2.test", .is_dir = false},
+    {.path = "file3.ext_test", .is_dir = false},
+    {.path = "1/file1.test", .is_dir = false},
+    {.path = "111/22/33/file1.test", .is_dir = false},
+    {.path = "111/22/33/file2.test", .is_dir = false},
+    {.path = "111/22/33/file3.ext_test", .is_dir = false},
+    {.path = "111/22/33/file4.ext_test", .is_dir = false},
+};
+
+const StorageTestPathDesc storage_test_dirwalk_no_recursive[] = {
+    {.path = "1", .is_dir = true},
+    {.path = "11", .is_dir = true},
+    {.path = "111", .is_dir = true},
+    {.path = "file1.test", .is_dir = false},
+    {.path = "file2.test", .is_dir = false},
+    {.path = "file3.ext_test", .is_dir = false},
+};
+
+const StorageTestPathDesc storage_test_dirwalk_filter[] = {
+    {.path = "file1.test", .is_dir = false},
+    {.path = "file2.test", .is_dir = false},
+    {.path = "1/file1.test", .is_dir = false},
+    {.path = "111/22/33/file1.test", .is_dir = false},
+    {.path = "111/22/33/file2.test", .is_dir = false},
+};
+
+typedef struct {
+    bool is_dir;
+    bool visited;
+} StorageTestPath;
+
+DICT_DEF2(StorageTestPathDict, string_t, STRING_OPLIST, StorageTestPath, M_POD_OPLIST)
+
+static StorageTestPathDict_t*
+    storage_test_paths_alloc(const StorageTestPathDesc paths[], size_t paths_count) {
+    StorageTestPathDict_t* data = malloc(sizeof(StorageTestPathDict_t));
+    StorageTestPathDict_init(*data);
+
+    for(size_t i = 0; i < paths_count; i++) {
+        string_t key;
+        string_init_set(key, paths[i].path);
+        StorageTestPath value = {
+            .is_dir = paths[i].is_dir,
+            .visited = false,
+        };
+
+        StorageTestPathDict_set_at(*data, key, value);
+        string_clear(key);
+    }
+
+    return data;
+}
+
+static void storage_test_paths_free(StorageTestPathDict_t* data) {
+    StorageTestPathDict_clear(*data);
+    free(data);
+}
+
+static bool storage_test_paths_mark(StorageTestPathDict_t* data, string_t path, bool is_dir) {
+    bool found = false;
+
+    StorageTestPath* record = StorageTestPathDict_get(*data, path);
+    if(record) {
+        if(is_dir == record->is_dir) {
+            if(record->visited == false) {
+                record->visited = true;
+                found = true;
+            }
+        }
+    }
+
+    return found;
+}
+
+static bool storage_test_paths_check(StorageTestPathDict_t* data) {
+    bool error = false;
+
+    StorageTestPathDict_it_t it;
+    for(StorageTestPathDict_it(it, *data); !StorageTestPathDict_end_p(it);
+        StorageTestPathDict_next(it)) {
+        const StorageTestPathDict_itref_t* itref = StorageTestPathDict_cref(it);
+
+        if(itref->value.visited == false) {
+            error = true;
+            break;
+        }
+    }
+
+    return error;
+}
+
+static bool write_file_13DA(Storage* storage, const char* path) {
+    File* file = storage_file_alloc(storage);
+    bool result = false;
+    if(storage_file_open(file, path, FSAM_WRITE, FSOM_CREATE_ALWAYS)) {
+        result = storage_file_write(file, "13DA", 4) == 4;
+    }
+    storage_file_close(file);
+    storage_file_free(file);
+
+    return result;
+}
+
+static void storage_dirs_create(Storage* storage, const char* base) {
+    string_t path;
+    string_init(path);
+
+    storage_common_mkdir(storage, base);
+
+    for(size_t i = 0; i < COUNT_OF(storage_test_dirwalk_paths); i++) {
+        string_printf(path, "%s/%s", base, storage_test_dirwalk_paths[i]);
+        storage_common_mkdir(storage, string_get_cstr(path));
+    }
+
+    for(size_t i = 0; i < COUNT_OF(storage_test_dirwalk_files); i++) {
+        string_printf(path, "%s/%s", base, storage_test_dirwalk_files[i]);
+        write_file_13DA(storage, string_get_cstr(path));
+    }
+
+    string_clear(path);
+}
+
+MU_TEST_1(test_dirwalk_full, Storage* storage) {
+    string_t path;
+    string_init(path);
+    FileInfo fileinfo;
+
+    StorageTestPathDict_t* paths =
+        storage_test_paths_alloc(storage_test_dirwalk_full, COUNT_OF(storage_test_dirwalk_full));
+
+    DirWalk* dir_walk = dir_walk_alloc(storage);
+    mu_check(dir_walk_open(dir_walk, "/ext/dirwalk"));
+
+    while(dir_walk_read(dir_walk, path, &fileinfo) == DirWalkOK) {
+        string_right(path, strlen("/ext/dirwalk/"));
+        mu_check(storage_test_paths_mark(paths, path, (fileinfo.flags & FSF_DIRECTORY)));
+    }
+
+    dir_walk_free(dir_walk);
+    string_clear(path);
+
+    mu_check(storage_test_paths_check(paths) == false);
+
+    storage_test_paths_free(paths);
+}
+
+MU_TEST_1(test_dirwalk_no_recursive, Storage* storage) {
+    string_t path;
+    string_init(path);
+    FileInfo fileinfo;
+
+    StorageTestPathDict_t* paths = storage_test_paths_alloc(
+        storage_test_dirwalk_no_recursive, COUNT_OF(storage_test_dirwalk_no_recursive));
+
+    DirWalk* dir_walk = dir_walk_alloc(storage);
+    dir_walk_set_recursive(dir_walk, false);
+    mu_check(dir_walk_open(dir_walk, "/ext/dirwalk"));
+
+    while(dir_walk_read(dir_walk, path, &fileinfo) == DirWalkOK) {
+        string_right(path, strlen("/ext/dirwalk/"));
+        mu_check(storage_test_paths_mark(paths, path, (fileinfo.flags & FSF_DIRECTORY)));
+    }
+
+    dir_walk_free(dir_walk);
+    string_clear(path);
+
+    mu_check(storage_test_paths_check(paths) == false);
+
+    storage_test_paths_free(paths);
+}
+
+static bool test_dirwalk_filter_no_folder_ext(const char* name, FileInfo* fileinfo, void* ctx) {
+    UNUSED(ctx);
+
+    // only files
+    if(!(fileinfo->flags & FSF_DIRECTORY)) {
+        // with ".test" in name
+        if(strstr(name, ".test") != NULL) {
+            return true;
+        }
+    }
+
+    return false;
+}
+
+MU_TEST_1(test_dirwalk_filter, Storage* storage) {
+    string_t path;
+    string_init(path);
+    FileInfo fileinfo;
+
+    StorageTestPathDict_t* paths = storage_test_paths_alloc(
+        storage_test_dirwalk_filter, COUNT_OF(storage_test_dirwalk_filter));
+
+    DirWalk* dir_walk = dir_walk_alloc(storage);
+    dir_walk_set_filter_cb(dir_walk, test_dirwalk_filter_no_folder_ext, NULL);
+    mu_check(dir_walk_open(dir_walk, "/ext/dirwalk"));
+
+    while(dir_walk_read(dir_walk, path, &fileinfo) == DirWalkOK) {
+        string_right(path, strlen("/ext/dirwalk/"));
+        mu_check(storage_test_paths_mark(paths, path, (fileinfo.flags & FSF_DIRECTORY)));
+    }
+
+    dir_walk_free(dir_walk);
+    string_clear(path);
+
+    mu_check(storage_test_paths_check(paths) == false);
+
+    storage_test_paths_free(paths);
+}
+
+MU_TEST_SUITE(test_dirwalk_suite) {
+    Storage* storage = furi_record_open("storage");
+    storage_dirs_create(storage, "/ext/dirwalk");
+
+    MU_RUN_TEST_1(test_dirwalk_full, storage);
+    MU_RUN_TEST_1(test_dirwalk_no_recursive, storage);
+    MU_RUN_TEST_1(test_dirwalk_filter, storage);
+
+    storage_simply_remove_recursive(storage, "/ext/dirwalk");
+    furi_record_close("storage");
+}
+
+int run_minunit_test_dirwalk() {
+    MU_RUN_SUITE(test_dirwalk_suite);
+    return MU_EXIT_CODE;
+}
\ No newline at end of file
diff --git a/applications/unit_tests/storage/storage_test.c b/applications/unit_tests/storage/storage_test.c
index 3fccc68f..9f237bd0 100644
--- a/applications/unit_tests/storage/storage_test.c
+++ b/applications/unit_tests/storage/storage_test.c
@@ -164,8 +164,153 @@ MU_TEST_SUITE(storage_dir) {
     MU_RUN_TEST(storage_dir_open_lock);
 }
 
+static const char* const storage_copy_test_paths[] = {
+    "1",
+    "11",
+    "111",
+    "1/2",
+    "1/22",
+    "1/222",
+    "11/1",
+    "111/2",
+    "111/22",
+    "111/22/33",
+};
+
+static const char* const storage_copy_test_files[] = {
+    "file.test",
+    "1/file.test",
+    "111/22/33/file.test",
+};
+
+static bool write_file_13DA(Storage* storage, const char* path) {
+    File* file = storage_file_alloc(storage);
+    bool result = false;
+    if(storage_file_open(file, path, FSAM_WRITE, FSOM_CREATE_ALWAYS)) {
+        result = storage_file_write(file, "13DA", 4) == 4;
+    }
+    storage_file_close(file);
+    storage_file_free(file);
+
+    return result;
+}
+
+static bool check_file_13DA(Storage* storage, const char* path) {
+    File* file = storage_file_alloc(storage);
+    bool result = false;
+    if(storage_file_open(file, path, FSAM_READ, FSOM_OPEN_EXISTING)) {
+        char data[10] = {0};
+        result = storage_file_read(file, data, 4) == 4;
+        if(result) {
+            result = memcmp(data, "13DA", 4) == 0;
+        }
+    }
+    storage_file_close(file);
+    storage_file_free(file);
+
+    return result;
+}
+
+static void storage_dir_create(Storage* storage, const char* base) {
+    string_t path;
+    string_init(path);
+
+    storage_common_mkdir(storage, base);
+
+    for(size_t i = 0; i < COUNT_OF(storage_copy_test_paths); i++) {
+        string_printf(path, "%s/%s", base, storage_copy_test_paths[i]);
+        storage_common_mkdir(storage, string_get_cstr(path));
+    }
+
+    for(size_t i = 0; i < COUNT_OF(storage_copy_test_files); i++) {
+        string_printf(path, "%s/%s", base, storage_copy_test_files[i]);
+        write_file_13DA(storage, string_get_cstr(path));
+    }
+
+    string_clear(path);
+}
+
+static void storage_dir_remove(Storage* storage, const char* base) {
+    storage_simply_remove_recursive(storage, base);
+}
+
+static bool storage_dir_rename_check(Storage* storage, const char* base) {
+    bool result = false;
+    string_t path;
+    string_init(path);
+
+    result = (storage_common_stat(storage, base, NULL) == FSE_OK);
+
+    if(result) {
+        for(size_t i = 0; i < COUNT_OF(storage_copy_test_paths); i++) {
+            string_printf(path, "%s/%s", base, storage_copy_test_paths[i]);
+            result = (storage_common_stat(storage, string_get_cstr(path), NULL) == FSE_OK);
+            if(!result) {
+                break;
+            }
+        }
+    }
+
+    if(result) {
+        for(size_t i = 0; i < COUNT_OF(storage_copy_test_files); i++) {
+            string_printf(path, "%s/%s", base, storage_copy_test_files[i]);
+            result = check_file_13DA(storage, string_get_cstr(path));
+            if(!result) {
+                break;
+            }
+        }
+    }
+
+    string_clear(path);
+    return result;
+}
+
+MU_TEST(storage_file_rename) {
+    Storage* storage = furi_record_open("storage");
+    File* file = storage_file_alloc(storage);
+
+    mu_check(write_file_13DA(storage, "/ext/file.old"));
+    mu_check(check_file_13DA(storage, "/ext/file.old"));
+    mu_assert_int_eq(FSE_OK, storage_common_rename(storage, "/ext/file.old", "/ext/file.new"));
+    mu_assert_int_eq(FSE_NOT_EXIST, storage_common_stat(storage, "/ext/file.old", NULL));
+    mu_assert_int_eq(FSE_OK, storage_common_stat(storage, "/ext/file.new", NULL));
+    mu_check(check_file_13DA(storage, "/ext/file.new"));
+    mu_assert_int_eq(FSE_OK, storage_common_remove(storage, "/ext/file.new"));
+
+    storage_file_free(file);
+    furi_record_close("storage");
+}
+
+MU_TEST(storage_dir_rename) {
+    Storage* storage = furi_record_open("storage");
+
+    storage_dir_create(storage, "/ext/dir.old");
+
+    mu_check(storage_dir_rename_check(storage, "/ext/dir.old"));
+
+    mu_assert_int_eq(FSE_OK, storage_common_rename(storage, "/ext/dir.old", "/ext/dir.new"));
+    mu_assert_int_eq(FSE_NOT_EXIST, storage_common_stat(storage, "/ext/dir.old", NULL));
+    mu_check(storage_dir_rename_check(storage, "/ext/dir.new"));
+
+    storage_dir_remove(storage, "/ext/dir.new");
+    mu_assert_int_eq(FSE_NOT_EXIST, storage_common_stat(storage, "/ext/dir.new", NULL));
+
+    furi_record_close("storage");
+}
+
+MU_TEST_SUITE(storage_rename) {
+    MU_RUN_TEST(storage_file_rename);
+    MU_RUN_TEST(storage_dir_rename);
+
+    Storage* storage = furi_record_open("storage");
+    storage_dir_remove(storage, "/ext/dir.old");
+    storage_dir_remove(storage, "/ext/dir.new");
+    furi_record_close("storage");
+}
+
 int run_minunit_test_storage() {
     MU_RUN_SUITE(storage_file);
     MU_RUN_SUITE(storage_dir);
+    MU_RUN_SUITE(storage_rename);
     return MU_EXIT_CODE;
-}
\ No newline at end of file
+}
diff --git a/applications/unit_tests/stream/stream_test.c b/applications/unit_tests/stream/stream_test.c
index eed8a7bc..b5e8a18b 100644
--- a/applications/unit_tests/stream/stream_test.c
+++ b/applications/unit_tests/stream/stream_test.c
@@ -378,4 +378,4 @@ MU_TEST_SUITE(stream_suite) {
 int run_minunit_test_stream() {
     MU_RUN_SUITE(stream_suite);
     return MU_EXIT_CODE;
-}
\ No newline at end of file
+}
diff --git a/applications/unit_tests/subghz/subghz_test.c b/applications/unit_tests/subghz/subghz_test.c
index 48613868..879deae8 100644
--- a/applications/unit_tests/subghz/subghz_test.c
+++ b/applications/unit_tests/subghz/subghz_test.c
@@ -13,7 +13,7 @@
 #define CAME_ATOMO_DIR_NAME "/ext/subghz/assets/came_atomo"
 #define NICE_FLOR_S_DIR_NAME "/ext/subghz/assets/nice_flor_s"
 #define TEST_RANDOM_DIR_NAME "/ext/unit_tests/subghz/test_random_raw.sub"
-#define TEST_RANDOM_COUNT_PARSE 101
+#define TEST_RANDOM_COUNT_PARSE 113
 #define TEST_TIMEOUT 10000
 
 static SubGhzEnvironment* environment_handler;
@@ -26,10 +26,13 @@ static void subghz_test_rx_callback(
     SubGhzReceiver* receiver,
     SubGhzProtocolDecoderBase* decoder_base,
     void* context) {
+    UNUSED(receiver);
+    UNUSED(context);
     string_t text;
     string_init(text);
     subghz_protocol_decoder_base_get_string(decoder_base, text);
-    FURI_LOG_I(TAG, "\r\n%s", string_get_cstr(text));
+    subghz_receiver_reset(receiver_handler);
+    FURI_LOG_T(TAG, "\r\n%s", string_get_cstr(text));
     string_clear(text);
     subghz_test_decoder_count++;
 }
@@ -51,7 +54,7 @@ static void subghz_test_deinit(void) {
     subghz_environment_free(environment_handler);
 }
 
-static bool subghz_decode_test(const char* path, const char* name_decoder) {
+static bool subghz_decoder_test(const char* path, const char* name_decoder) {
     subghz_test_decoder_count = 0;
     uint32_t test_start = furi_hal_get_tick();
 
@@ -61,18 +64,18 @@ static bool subghz_decode_test(const char* path, const char* name_decoder) {
     if(decoder) {
         file_worker_encoder_handler = subghz_file_encoder_worker_alloc();
         if(subghz_file_encoder_worker_start(file_worker_encoder_handler, path)) {
-            //the worker needs a file in order to open and read part of the file
+            // the worker needs a file in order to open and read part of the file
             osDelay(100);
 
             LevelDuration level_duration;
             while(furi_hal_get_tick() - test_start < TEST_TIMEOUT) {
-                furi_hal_delay_us(
-                    500); //you need to have time to read from the file from the SD card
                 level_duration =
                     subghz_file_encoder_worker_get_level_duration(file_worker_encoder_handler);
                 if(!level_duration_is_reset(level_duration)) {
                     bool level = level_duration_get_level(level_duration);
                     uint32_t duration = level_duration_get_duration(level_duration);
+                    // Yield, to load data inside the worker
+                    osThreadYield();
                     decoder->protocol->decoder->feed(decoder, level, duration);
                 } else {
                     break;
@@ -85,7 +88,7 @@ static bool subghz_decode_test(const char* path, const char* name_decoder) {
         }
         subghz_file_encoder_worker_free(file_worker_encoder_handler);
     }
-    FURI_LOG_I(TAG, "\r\n Decoder count parse \033[0;33m%d\033[0m ", subghz_test_decoder_count);
+    FURI_LOG_T(TAG, "\r\n Decoder count parse \033[0;33m%d\033[0m ", subghz_test_decoder_count);
     if(furi_hal_get_tick() - test_start > TEST_TIMEOUT) {
         printf("\033[0;31mTest decoder %s ERROR TimeOut\033[0m\r\n", name_decoder);
         return false;
@@ -94,24 +97,25 @@ static bool subghz_decode_test(const char* path, const char* name_decoder) {
     }
 }
 
-static bool subghz_decode_ramdom_test(const char* path) {
+static bool subghz_decode_random_test(const char* path) {
     subghz_test_decoder_count = 0;
     subghz_receiver_reset(receiver_handler);
     uint32_t test_start = furi_hal_get_tick();
 
     file_worker_encoder_handler = subghz_file_encoder_worker_alloc();
     if(subghz_file_encoder_worker_start(file_worker_encoder_handler, path)) {
-        //the worker needs a file in order to open and read part of the file
+        // the worker needs a file in order to open and read part of the file
         osDelay(100);
 
         LevelDuration level_duration;
         while(furi_hal_get_tick() - test_start < TEST_TIMEOUT * 10) {
-            furi_hal_delay_us(500); //you need to have time to read from the file from the SD card
             level_duration =
                 subghz_file_encoder_worker_get_level_duration(file_worker_encoder_handler);
             if(!level_duration_is_reset(level_duration)) {
                 bool level = level_duration_get_level(level_duration);
                 uint32_t duration = level_duration_get_duration(level_duration);
+                // Yield, to load data inside the worker
+                osThreadYield();
                 subghz_receiver_decode(receiver_handler, level, duration);
             } else {
                 break;
@@ -123,7 +127,7 @@ static bool subghz_decode_ramdom_test(const char* path) {
         }
         subghz_file_encoder_worker_free(file_worker_encoder_handler);
     }
-    FURI_LOG_I(TAG, "\r\n Decoder count parse \033[0;33m%d\033[0m ", subghz_test_decoder_count);
+    FURI_LOG_T(TAG, "\r\n Decoder count parse \033[0;33m%d\033[0m ", subghz_test_decoder_count);
     if(furi_hal_get_tick() - test_start > TEST_TIMEOUT * 10) {
         printf("\033[0;31mRandom test ERROR TimeOut\033[0m\r\n");
         return false;
@@ -134,7 +138,7 @@ static bool subghz_decode_ramdom_test(const char* path) {
     }
 }
 
-static bool subghz_ecode_test(const char* path) {
+static bool subghz_encoder_test(const char* path) {
     subghz_test_decoder_count = 0;
     uint32_t test_start = furi_hal_get_tick();
     string_t temp_str;
@@ -186,7 +190,7 @@ static bool subghz_ecode_test(const char* path) {
         subghz_transmitter_free(transmitter);
     }
     flipper_format_free(fff_data_file);
-    FURI_LOG_I(TAG, "\r\n Decoder count parse \033[0;33m%d\033[0m ", subghz_test_decoder_count);
+    FURI_LOG_T(TAG, "\r\n Decoder count parse \033[0;33m%d\033[0m ", subghz_test_decoder_count);
     if(furi_hal_get_tick() - test_start > TEST_TIMEOUT) {
         printf("\033[0;31mTest encoder %s ERROR TimeOut\033[0m\r\n", string_get_cstr(temp_str));
         subghz_test_decoder_count = 0;
@@ -202,169 +206,221 @@ MU_TEST(subghz_keystore_test) {
         "Test keystore error");
 }
 
+//test decoders
 MU_TEST(subghz_decoder_came_atomo_test) {
     mu_assert(
-        subghz_decode_test(
+        subghz_decoder_test(
             "/ext/unit_tests/subghz/came_atomo_raw.sub", SUBGHZ_PROTOCOL_CAME_ATOMO_NAME),
         "Test decoder " SUBGHZ_PROTOCOL_CAME_ATOMO_NAME " error\r\n");
 }
 
 MU_TEST(subghz_decoder_came_test) {
     mu_assert(
-        subghz_decode_test("/ext/unit_tests/subghz/came_raw.sub", SUBGHZ_PROTOCOL_CAME_NAME),
+        subghz_decoder_test("/ext/unit_tests/subghz/came_raw.sub", SUBGHZ_PROTOCOL_CAME_NAME),
         "Test decoder " SUBGHZ_PROTOCOL_CAME_NAME " error\r\n");
 }
 
 MU_TEST(subghz_decoder_came_twee_test) {
     mu_assert(
-        subghz_decode_test(
+        subghz_decoder_test(
             "/ext/unit_tests/subghz/came_twee_raw.sub", SUBGHZ_PROTOCOL_CAME_TWEE_NAME),
         "Test decoder " SUBGHZ_PROTOCOL_CAME_TWEE_NAME " error\r\n");
 }
 
 MU_TEST(subghz_decoder_faac_slh_test) {
     mu_assert(
-        subghz_decode_test(
+        subghz_decoder_test(
             "/ext/unit_tests/subghz/faac_slh_raw.sub", SUBGHZ_PROTOCOL_FAAC_SLH_NAME),
         "Test decoder " SUBGHZ_PROTOCOL_FAAC_SLH_NAME " error\r\n");
 }
 
 MU_TEST(subghz_decoder_gate_tx_test) {
     mu_assert(
-        subghz_decode_test("/ext/unit_tests/subghz/gate_tx_raw.sub", SUBGHZ_PROTOCOL_GATE_TX_NAME),
+        subghz_decoder_test("/ext/unit_tests/subghz/gate_tx_raw.sub", SUBGHZ_PROTOCOL_GATE_TX_NAME),
         "Test decoder " SUBGHZ_PROTOCOL_GATE_TX_NAME " error\r\n");
 }
 
 MU_TEST(subghz_decoder_hormann_hsm_test) {
     mu_assert(
-        subghz_decode_test(
+        subghz_decoder_test(
             "/ext/unit_tests/subghz/hormann_hsm_raw.sub", SUBGHZ_PROTOCOL_HORMANN_HSM_NAME),
         "Test decoder " SUBGHZ_PROTOCOL_HORMANN_HSM_NAME " error\r\n");
 }
 
 MU_TEST(subghz_decoder_ido_test) {
     mu_assert(
-        subghz_decode_test("/ext/unit_tests/subghz/ido_117_111_raw.sub", SUBGHZ_PROTOCOL_IDO_NAME),
+        subghz_decoder_test("/ext/unit_tests/subghz/ido_117_111_raw.sub", SUBGHZ_PROTOCOL_IDO_NAME),
         "Test decoder " SUBGHZ_PROTOCOL_IDO_NAME " error\r\n");
 }
 
 MU_TEST(subghz_decoder_keelog_test) {
     mu_assert(
-        subghz_decode_test("/ext/unit_tests/subghz/doorhan_raw.sub", SUBGHZ_PROTOCOL_KEELOQ_NAME),
+        subghz_decoder_test("/ext/unit_tests/subghz/doorhan_raw.sub", SUBGHZ_PROTOCOL_KEELOQ_NAME),
         "Test decoder " SUBGHZ_PROTOCOL_KEELOQ_NAME " error\r\n");
 }
 
 MU_TEST(subghz_decoder_kia_seed_test) {
     mu_assert(
-        subghz_decode_test("/ext/unit_tests/subghz/kia_seed_raw.sub", SUBGHZ_PROTOCOL_KIA_NAME),
+        subghz_decoder_test("/ext/unit_tests/subghz/kia_seed_raw.sub", SUBGHZ_PROTOCOL_KIA_NAME),
         "Test decoder " SUBGHZ_PROTOCOL_KIA_NAME " error\r\n");
 }
 
 MU_TEST(subghz_decoder_nero_radio_test) {
     mu_assert(
-        subghz_decode_test(
+        subghz_decoder_test(
             "/ext/unit_tests/subghz/nero_radio_raw.sub", SUBGHZ_PROTOCOL_NERO_RADIO_NAME),
         "Test decoder " SUBGHZ_PROTOCOL_NERO_RADIO_NAME " error\r\n");
 }
 
 MU_TEST(subghz_decoder_nero_sketch_test) {
     mu_assert(
-        subghz_decode_test(
+        subghz_decoder_test(
             "/ext/unit_tests/subghz/nero_sketch_raw.sub", SUBGHZ_PROTOCOL_NERO_SKETCH_NAME),
         "Test decoder " SUBGHZ_PROTOCOL_NERO_SKETCH_NAME " error\r\n");
 }
 
 MU_TEST(subghz_decoder_nice_flo_test) {
     mu_assert(
-        subghz_decode_test(
+        subghz_decoder_test(
             "/ext/unit_tests/subghz/nice_flo_raw.sub", SUBGHZ_PROTOCOL_NICE_FLO_NAME),
         "Test decoder " SUBGHZ_PROTOCOL_NICE_FLO_NAME " error\r\n");
 }
 
 MU_TEST(subghz_decoder_nice_flor_s_test) {
     mu_assert(
-        subghz_decode_test(
+        subghz_decoder_test(
             "/ext/unit_tests/subghz/nice_flor_s_raw.sub", SUBGHZ_PROTOCOL_NICE_FLOR_S_NAME),
         "Test decoder " SUBGHZ_PROTOCOL_NICE_FLOR_S_NAME " error\r\n");
 }
 
 MU_TEST(subghz_decoder_princeton_test) {
     mu_assert(
-        subghz_decode_test(
+        subghz_decoder_test(
             "/ext/unit_tests/subghz/Princeton_raw.sub", SUBGHZ_PROTOCOL_PRINCETON_NAME),
         "Test decoder " SUBGHZ_PROTOCOL_PRINCETON_NAME " error\r\n");
 }
 
 MU_TEST(subghz_decoder_scher_khan_magic_code_test) {
     mu_assert(
-        subghz_decode_test(
+        subghz_decoder_test(
             "/ext/unit_tests/subghz/scher_khan_magic_code.sub", SUBGHZ_PROTOCOL_SCHER_KHAN_NAME),
         "Test decoder " SUBGHZ_PROTOCOL_SCHER_KHAN_NAME " error\r\n");
 }
 
 MU_TEST(subghz_decoder_somfy_keytis_test) {
     mu_assert(
-        subghz_decode_test(
+        subghz_decoder_test(
             "/ext/unit_tests/subghz/Somfy_keytis_raw.sub", SUBGHZ_PROTOCOL_SOMFY_KEYTIS_NAME),
         "Test decoder " SUBGHZ_PROTOCOL_SOMFY_KEYTIS_NAME " error\r\n");
 }
 
 MU_TEST(subghz_decoder_somfy_telis_test) {
     mu_assert(
-        subghz_decode_test(
+        subghz_decoder_test(
             "/ext/unit_tests/subghz/somfy_telis_raw.sub", SUBGHZ_PROTOCOL_SOMFY_TELIS_NAME),
         "Test decoder " SUBGHZ_PROTOCOL_SOMFY_TELIS_NAME " error\r\n");
 }
 
 MU_TEST(subghz_decoder_star_line_test) {
     mu_assert(
-        subghz_decode_test("/ext/unit_tests/subghz/cenmax_raw.sub", SUBGHZ_PROTOCOL_STAR_LINE_NAME),
+        subghz_decoder_test(
+            "/ext/unit_tests/subghz/cenmax_raw.sub", SUBGHZ_PROTOCOL_STAR_LINE_NAME),
         "Test decoder " SUBGHZ_PROTOCOL_STAR_LINE_NAME " error\r\n");
 }
 
-MU_TEST(subghz_ecoder_princeton_test) {
+MU_TEST(subghz_decoder_firefly_test) {
     mu_assert(
-        subghz_ecode_test("/ext/unit_tests/subghz/princeton.sub"),
+        subghz_decoder_test("/ext/unit_tests/subghz/firefly_raw.sub", SUBGHZ_PROTOCOL_FIREFLY_NAME),
+        "Test decoder " SUBGHZ_PROTOCOL_FIREFLY_NAME " error\r\n");
+}
+
+MU_TEST(subghz_decoder_megacode_test) {
+    mu_assert(
+        subghz_decoder_test(
+            "/ext/unit_tests/subghz/megacode_raw.sub", SUBGHZ_PROTOCOL_MEGACODE_NAME),
+        "Test decoder " SUBGHZ_PROTOCOL_MEGACODE_NAME " error\r\n");
+}
+
+MU_TEST(subghz_decoder_secplus_v1_test) {
+    mu_assert(
+        subghz_decoder_test(
+            "/ext/unit_tests/subghz/security_pls_1_0_raw.sub", SUBGHZ_PROTOCOL_SECPLUS_V1_NAME),
+        "Test decoder " SUBGHZ_PROTOCOL_SECPLUS_V1_NAME " error\r\n");
+}
+
+MU_TEST(subghz_decoder_secplus_v2_test) {
+    mu_assert(
+        subghz_decoder_test(
+            "/ext/unit_tests/subghz/security_pls_2_0_raw.sub", SUBGHZ_PROTOCOL_SECPLUS_V2_NAME),
+        "Test decoder " SUBGHZ_PROTOCOL_SECPLUS_V2_NAME " error\r\n");
+}
+
+MU_TEST(subghz_decoder_holtek_test) {
+    mu_assert(
+        subghz_decoder_test("/ext/unit_tests/subghz/holtek_raw.sub", SUBGHZ_PROTOCOL_HOLTEK_NAME),
+        "Test decoder " SUBGHZ_PROTOCOL_HOLTEK_NAME " error\r\n");
+}
+
+//test encoders
+MU_TEST(subghz_encoder_princeton_test) {
+    mu_assert(
+        subghz_encoder_test("/ext/unit_tests/subghz/princeton.sub"),
         "Test encoder " SUBGHZ_PROTOCOL_PRINCETON_NAME " error\r\n");
 }
 
-MU_TEST(subghz_ecoder_came_test) {
+MU_TEST(subghz_encoder_came_test) {
     mu_assert(
-        subghz_ecode_test("/ext/unit_tests/subghz/came.sub"),
+        subghz_encoder_test("/ext/unit_tests/subghz/came.sub"),
         "Test encoder " SUBGHZ_PROTOCOL_CAME_NAME " error\r\n");
 }
 
-MU_TEST(subghz_ecoder_came_twee_test) {
+MU_TEST(subghz_encoder_came_twee_test) {
     mu_assert(
-        subghz_ecode_test("/ext/unit_tests/subghz/came_twee.sub"),
+        subghz_encoder_test("/ext/unit_tests/subghz/came_twee.sub"),
         "Test encoder " SUBGHZ_PROTOCOL_CAME_TWEE_NAME " error\r\n");
 }
 
-MU_TEST(subghz_ecoder_gate_tx_test) {
+MU_TEST(subghz_encoder_gate_tx_test) {
     mu_assert(
-        subghz_ecode_test("/ext/unit_tests/subghz/gate_tx.sub"),
+        subghz_encoder_test("/ext/unit_tests/subghz/gate_tx.sub"),
         "Test encoder " SUBGHZ_PROTOCOL_GATE_TX_NAME " error\r\n");
 }
 
-MU_TEST(subghz_ecoder_nice_flo_test) {
+MU_TEST(subghz_encoder_nice_flo_test) {
     mu_assert(
-        subghz_ecode_test("/ext/unit_tests/subghz/nice_flo.sub"),
+        subghz_encoder_test("/ext/unit_tests/subghz/nice_flo.sub"),
         "Test encoder " SUBGHZ_PROTOCOL_NICE_FLO_NAME " error\r\n");
 }
 
-MU_TEST(subghz_ecoder_keelog_test) {
+MU_TEST(subghz_encoder_keelog_test) {
     mu_assert(
-        subghz_ecode_test("/ext/unit_tests/subghz/doorhan.sub"),
+        subghz_encoder_test("/ext/unit_tests/subghz/doorhan.sub"),
         "Test encoder " SUBGHZ_PROTOCOL_KEELOQ_NAME " error\r\n");
 }
 
+MU_TEST(subghz_encoder_firefly_test) {
+    mu_assert(
+        subghz_encoder_test("/ext/unit_tests/subghz/firely.sub"),
+        "Test encoder " SUBGHZ_PROTOCOL_FIREFLY_NAME " error\r\n");
+}
+
+MU_TEST(subghz_encoder_megacode_test) {
+    mu_assert(
+        subghz_encoder_test("/ext/unit_tests/subghz/megacode.sub"),
+        "Test encoder " SUBGHZ_PROTOCOL_MEGACODE_NAME " error\r\n");
+}
+
+MU_TEST(subghz_encoder_holtek_test) {
+    mu_assert(
+        subghz_encoder_test("/ext/unit_tests/subghz/holtek.sub"),
+        "Test encoder " SUBGHZ_PROTOCOL_HOLTEK_NAME " error\r\n");
+}
+
 MU_TEST(subghz_random_test) {
-    mu_assert(subghz_decode_ramdom_test(TEST_RANDOM_DIR_NAME), "Random test error\r\n");
+    mu_assert(subghz_decode_random_test(TEST_RANDOM_DIR_NAME), "Random test error\r\n");
 }
 
 MU_TEST_SUITE(subghz) {
-    //MU_SUITE_CONFIGURE(&subghz_test_init, &subghz_test_deinit);
-
     subghz_test_init();
     MU_RUN_TEST(subghz_keystore_test);
 
@@ -386,13 +442,21 @@ MU_TEST_SUITE(subghz) {
     MU_RUN_TEST(subghz_decoder_somfy_keytis_test);
     MU_RUN_TEST(subghz_decoder_somfy_telis_test);
     MU_RUN_TEST(subghz_decoder_star_line_test);
+    MU_RUN_TEST(subghz_decoder_firefly_test);
+    MU_RUN_TEST(subghz_decoder_megacode_test);
+    MU_RUN_TEST(subghz_decoder_secplus_v1_test);
+    MU_RUN_TEST(subghz_decoder_secplus_v2_test);
+    MU_RUN_TEST(subghz_decoder_holtek_test);
 
-    MU_RUN_TEST(subghz_ecoder_princeton_test);
-    MU_RUN_TEST(subghz_ecoder_came_test);
-    MU_RUN_TEST(subghz_ecoder_came_twee_test);
-    MU_RUN_TEST(subghz_ecoder_gate_tx_test);
-    MU_RUN_TEST(subghz_ecoder_nice_flo_test);
-    MU_RUN_TEST(subghz_ecoder_keelog_test);
+    MU_RUN_TEST(subghz_encoder_princeton_test);
+    MU_RUN_TEST(subghz_encoder_came_test);
+    MU_RUN_TEST(subghz_encoder_came_twee_test);
+    MU_RUN_TEST(subghz_encoder_gate_tx_test);
+    MU_RUN_TEST(subghz_encoder_nice_flo_test);
+    MU_RUN_TEST(subghz_encoder_keelog_test);
+    MU_RUN_TEST(subghz_encoder_firefly_test);
+    MU_RUN_TEST(subghz_encoder_megacode_test);
+    MU_RUN_TEST(subghz_encoder_holtek_test);
 
     MU_RUN_TEST(subghz_random_test);
     subghz_test_deinit();
diff --git a/applications/unit_tests/test_index.c b/applications/unit_tests/test_index.c
index ef12224c..a1acbed4 100644
--- a/applications/unit_tests/test_index.c
+++ b/applications/unit_tests/test_index.c
@@ -18,6 +18,7 @@ int run_minunit_test_flipper_format_string();
 int run_minunit_test_stream();
 int run_minunit_test_storage();
 int run_minunit_test_subghz();
+int run_minunit_test_dirwalk();
 
 void minunit_print_progress(void) {
     static char progress[] = {'\\', '|', '/', '-'};
@@ -35,6 +36,9 @@ void minunit_print_fail(const char* str) {
 }
 
 void unit_tests_cli(Cli* cli, string_t args, void* context) {
+    UNUSED(cli);
+    UNUSED(args);
+    UNUSED(context);
     uint32_t test_result = 0;
     minunit_run = 0;
     minunit_assert = 0;
@@ -57,6 +61,7 @@ void unit_tests_cli(Cli* cli, string_t args, void* context) {
         test_result |= run_minunit();
         test_result |= run_minunit_test_storage();
         test_result |= run_minunit_test_stream();
+        test_result |= run_minunit_test_dirwalk();
         test_result |= run_minunit_test_flipper_format();
         test_result |= run_minunit_test_flipper_format_string();
         test_result |= run_minunit_test_infrared_decoder_encoder();
@@ -65,7 +70,7 @@ void unit_tests_cli(Cli* cli, string_t args, void* context) {
 
         cycle_counter = (furi_hal_get_tick() - cycle_counter);
 
-        FURI_LOG_I(TAG, "Consumed: %0.2fs", (float)cycle_counter / 1000);
+        FURI_LOG_I(TAG, "Consumed: %u us", cycle_counter);
 
         if(test_result == 0) {
             furi_hal_delay_ms(200); /* wait for tested services and apps to deallocate */
diff --git a/applications/updater/cli/updater_cli.c b/applications/updater/cli/updater_cli.c
index aa08bc61..fb2edeb9 100644
--- a/applications/updater/cli/updater_cli.c
+++ b/applications/updater/cli/updater_cli.c
@@ -52,7 +52,7 @@ static void updater_cli_restore(string_t args) {
 static void updater_cli_help(string_t args) {
     UNUSED(args);
     printf("Commands:\r\n"
-           "\tinstall /ext/update/PACKAGE/update.fuf - verify & apply update package\r\n"
+           "\tinstall /ext/path/to/update.fuf - verify & apply update package\r\n"
            "\tbackup /ext/path/to/backup.tar - create internal storage backup\r\n"
            "\trestore /ext/path/to/backup.tar - restore internal storage backup\r\n");
 }
@@ -65,6 +65,8 @@ static const CliSubcommand update_cli_subcommands[] = {
 };
 
 static void updater_cli_ep(Cli* cli, string_t args, void* context) {
+    UNUSED(cli);
+    UNUSED(context);
     string_t subcommand;
     string_init(subcommand);
     if(!args_read_string_and_trim(args, subcommand) || string_empty_p(args)) {
@@ -85,6 +87,7 @@ static void updater_cli_ep(Cli* cli, string_t args, void* context) {
 }
 
 static int32_t updater_spawner_thread_worker(void* arg) {
+    UNUSED(arg);
     Loader* loader = furi_record_open("loader");
     loader_start(loader, "UpdaterApp", NULL);
     furi_record_close("loader");
@@ -131,4 +134,4 @@ void updater_on_system_start() {
 #else
     UNUSED(updater_start_app);
 #endif
-}
+}
\ No newline at end of file
diff --git a/applications/updater/scenes/updater_scene_config.h b/applications/updater/scenes/updater_scene_config.h
index d2441c59..59601965 100644
--- a/applications/updater/scenes/updater_scene_config.h
+++ b/applications/updater/scenes/updater_scene_config.h
@@ -2,4 +2,4 @@ ADD_SCENE(updater, main, Main)
 #ifndef FURI_RAM_EXEC
 ADD_SCENE(updater, loadcfg, LoadCfg)
 ADD_SCENE(updater, error, Error)
-#endif
\ No newline at end of file
+#endif
diff --git a/applications/updater/scenes/updater_scene_loadcfg.c b/applications/updater/scenes/updater_scene_loadcfg.c
index 78423b07..8e477b14 100644
--- a/applications/updater/scenes/updater_scene_loadcfg.c
+++ b/applications/updater/scenes/updater_scene_loadcfg.c
@@ -102,4 +102,4 @@ void updater_scene_loadcfg_on_exit(void* context) {
 
     widget_reset(updater->widget);
     free(updater->pending_update);
-}
\ No newline at end of file
+}
diff --git a/applications/updater/scenes/updater_scene_main.c b/applications/updater/scenes/updater_scene_main.c
index c5fc99ff..5f7aeaca 100644
--- a/applications/updater/scenes/updater_scene_main.c
+++ b/applications/updater/scenes/updater_scene_main.c
@@ -45,8 +45,8 @@ void updater_scene_main_on_enter(void* context) {
     view_dispatcher_switch_to_view(updater->view_dispatcher, UpdaterViewMain);
 }
 
-static void updater_scene_restart_to_postupdate() {
-    furi_hal_rtc_set_boot_mode(FuriHalRtcBootModePostUpdate);
+static void updater_scene_cancel_update() {
+    update_operation_disarm();
     furi_hal_power_reset();
 }
 
@@ -57,7 +57,7 @@ bool updater_scene_main_on_event(void* context, SceneManagerEvent event) {
     if(event.type == SceneManagerEventTypeTick) {
         if(!update_task_is_running(updater->update_task)) {
             if(updater->idle_ticks++ >= (UPDATE_DELAY_OPERATION_ERROR / UPDATER_APP_TICK)) {
-                updater_scene_restart_to_postupdate();
+                updater_scene_cancel_update();
             }
         } else {
             updater->idle_ticks = 0;
@@ -74,7 +74,7 @@ bool updater_scene_main_on_event(void* context, SceneManagerEvent event) {
 
         case UpdaterCustomEventCancelUpdate:
             if(!update_task_is_running(updater->update_task)) {
-                updater_scene_restart_to_postupdate();
+                updater_scene_cancel_update();
             }
             consumed = true;
             break;
diff --git a/applications/updater/updater.c b/applications/updater/updater.c
index c1115ce1..4c9fe41f 100644
--- a/applications/updater/updater.c
+++ b/applications/updater/updater.c
@@ -26,15 +26,10 @@ static bool updater_back_event_callback(void* context) {
     return scene_manager_handle_back_event(updater->scene_manager);
 }
 
-static void status_update_cb(
-    const char* message,
-    const uint8_t progress,
-    const uint8_t idx_stage,
-    const uint8_t total_stages,
-    bool failed,
-    void* context) {
+static void
+    status_update_cb(const char* message, const uint8_t progress, bool failed, void* context) {
     UpdaterMainView* main_view = context;
-    updater_main_model_set_state(main_view, message, progress, idx_stage, total_stages, failed);
+    updater_main_model_set_state(main_view, message, progress, failed);
 }
 
 Updater* updater_alloc(const char* arg) {
@@ -64,9 +59,7 @@ Updater* updater_alloc(const char* arg) {
         updater->view_dispatcher, updater_tick_event_callback, UPDATER_APP_TICK);
 
     view_dispatcher_attach_to_gui(
-        updater->view_dispatcher,
-        updater->gui,
-        arg ? ViewDispatcherTypeFullscreen : ViewDispatcherTypeWindow);
+        updater->view_dispatcher, updater->gui, ViewDispatcherTypeFullscreen);
 
     updater->main_view = updater_main_alloc();
     view_dispatcher_add_view(
@@ -133,4 +126,4 @@ int32_t updater_srv(void* p) {
     updater_free(updater);
 
     return 0;
-}
\ No newline at end of file
+}
diff --git a/applications/updater/updater_i.h b/applications/updater/updater_i.h
index 89201e1e..8a021a08 100644
--- a/applications/updater/updater_i.h
+++ b/applications/updater/updater_i.h
@@ -64,4 +64,4 @@ void updater_free(Updater* updater);
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/applications/updater/util/update_task.c b/applications/updater/util/update_task.c
index 9fde086a..1238bdb0 100644
--- a/applications/updater/util/update_task.c
+++ b/applications/updater/util/update_task.c
@@ -14,54 +14,139 @@ static const char* update_task_stage_descr[] = {
     [UpdateTaskStageReadManifest] = "Loading update manifest",
     [UpdateTaskStageValidateDFUImage] = "Checking DFU file",
     [UpdateTaskStageFlashWrite] = "Writing flash",
-    [UpdateTaskStageFlashValidate] = "Validating",
-    [UpdateTaskStageRadioImageValidate] = "Checking radio image",
-    [UpdateTaskStageRadioErase] = "Removing radio stack",
-    [UpdateTaskStageRadioWrite] = "Writing radio stack",
-    [UpdateTaskStageRadioInstall] = "Installing radio stack",
-    [UpdateTaskStageRadioBusy] = "Core2 is updating",
+    [UpdateTaskStageFlashValidate] = "Validating flash",
+    [UpdateTaskStageRadioImageValidate] = "Checking radio FW",
+    [UpdateTaskStageRadioErase] = "Uninstalling radio FW",
+    [UpdateTaskStageRadioWrite] = "Writing radio FW",
+    [UpdateTaskStageRadioInstall] = "Installing radio FW",
+    [UpdateTaskStageRadioBusy] = "Radio is updating",
     [UpdateTaskStageOBValidation] = "Validating opt. bytes",
     [UpdateTaskStageLfsBackup] = "Backing up LFS",
     [UpdateTaskStageLfsRestore] = "Restoring LFS",
     [UpdateTaskStageResourcesUpdate] = "Updating resources",
-    [UpdateTaskStageCompleted] = "Completed!",
+    [UpdateTaskStageCompleted] = "Restarting...",
     [UpdateTaskStageError] = "Error",
-    [UpdateTaskStageOBError] = "OB error, pls report",
+    [UpdateTaskStageOBError] = "OB Err, report",
 };
 
-static void update_task_set_status(UpdateTask* update_task, const char* status) {
-    if(!status) {
-        if(update_task->state.stage >= COUNT_OF(update_task_stage_descr)) {
-            status = "...";
-        } else {
-            status = update_task_stage_descr[update_task->state.stage];
-        }
+typedef struct {
+    UpdateTaskStageGroup group;
+    uint8_t weight;
+} UpdateTaskStageGroupMap;
+
+#define STAGE_DEF(GROUP, WEIGHT) \
+    { .group = (GROUP), .weight = (WEIGHT), }
+
+static const UpdateTaskStageGroupMap update_task_stage_progress[] = {
+    [UpdateTaskStageProgress] = STAGE_DEF(UpdateTaskStageGroupMisc, 0),
+
+    [UpdateTaskStageReadManifest] = STAGE_DEF(UpdateTaskStageGroupPreUpdate, 5),
+    [UpdateTaskStageLfsBackup] = STAGE_DEF(UpdateTaskStageGroupPreUpdate, 30),
+
+    [UpdateTaskStageRadioImageValidate] = STAGE_DEF(UpdateTaskStageGroupRadio, 30),
+    [UpdateTaskStageRadioErase] = STAGE_DEF(UpdateTaskStageGroupRadio, 50),
+    [UpdateTaskStageRadioWrite] = STAGE_DEF(UpdateTaskStageGroupRadio, 100),
+    [UpdateTaskStageRadioInstall] = STAGE_DEF(UpdateTaskStageGroupRadio, 5),
+    [UpdateTaskStageRadioBusy] = STAGE_DEF(UpdateTaskStageGroupRadio, 70),
+
+    [UpdateTaskStageOBValidation] = STAGE_DEF(UpdateTaskStageGroupOptionBytes, 10),
+
+    [UpdateTaskStageValidateDFUImage] = STAGE_DEF(UpdateTaskStageGroupFirmware, 100),
+    [UpdateTaskStageFlashWrite] = STAGE_DEF(UpdateTaskStageGroupFirmware, 200),
+    [UpdateTaskStageFlashValidate] = STAGE_DEF(UpdateTaskStageGroupFirmware, 50),
+
+    [UpdateTaskStageLfsRestore] = STAGE_DEF(UpdateTaskStageGroupPostUpdate, 30),
+
+    [UpdateTaskStageResourcesUpdate] = STAGE_DEF(UpdateTaskStageGroupResources, 255),
+
+    [UpdateTaskStageCompleted] = STAGE_DEF(UpdateTaskStageGroupMisc, 1),
+    [UpdateTaskStageError] = STAGE_DEF(UpdateTaskStageGroupMisc, 1),
+    [UpdateTaskStageOBError] = STAGE_DEF(UpdateTaskStageGroupMisc, 1),
+};
+
+static UpdateTaskStageGroup update_task_get_task_groups(UpdateTask* update_task) {
+    UpdateTaskStageGroup ret = UpdateTaskStageGroupPreUpdate | UpdateTaskStageGroupPostUpdate;
+    UpdateManifest* manifest = update_task->manifest;
+    if(!string_empty_p(manifest->radio_image)) {
+        ret |= UpdateTaskStageGroupRadio;
     }
-    string_set_str(update_task->state.status, status);
+    if(update_manifest_has_obdata(manifest)) {
+        ret |= UpdateTaskStageGroupOptionBytes;
+    }
+    if(!string_empty_p(manifest->firmware_dfu_image)) {
+        ret |= UpdateTaskStageGroupFirmware;
+    }
+    if(!string_empty_p(manifest->resource_bundle)) {
+        ret |= UpdateTaskStageGroupResources;
+    }
+    return ret;
+}
+
+static void update_task_calc_completed_stages(UpdateTask* update_task) {
+    uint32_t completed_stages_points = 0;
+    for(UpdateTaskStage past_stage = UpdateTaskStageProgress;
+        past_stage < update_task->state.stage;
+        ++past_stage) {
+        const UpdateTaskStageGroupMap* grp_descr = &update_task_stage_progress[past_stage];
+        if((grp_descr->group & update_task->state.groups) == 0) {
+            continue;
+        }
+        completed_stages_points += grp_descr->weight;
+    }
+    update_task->state.completed_stages_points = completed_stages_points;
 }
 
 void update_task_set_progress(UpdateTask* update_task, UpdateTaskStage stage, uint8_t progress) {
     if(stage != UpdateTaskStageProgress) {
-        // do not override more specific error states
-        if((update_task->state.stage < UpdateTaskStageError) || (stage < UpdateTaskStageError)) {
-            update_task->state.stage = stage;
+        /* do not override more specific error states */
+        if((stage >= UpdateTaskStageError) && (update_task->state.stage >= UpdateTaskStageError)) {
+            return;
+        }
+        /* Build error message with code "[stage_idx-stage_percent]" */
+        if(stage >= UpdateTaskStageError) {
+            string_printf(
+                update_task->state.status,
+                "%s #[%d-%d]",
+                update_task_stage_descr[stage],
+                update_task->state.stage,
+                update_task->state.stage_progress);
+        } else {
+            string_set_str(update_task->state.status, update_task_stage_descr[stage]);
+        }
+        /* Store stage update */
+        update_task->state.stage = stage;
+        /* If we are still alive, sum completed stages weights */
+        if((stage > UpdateTaskStageProgress) && (stage < UpdateTaskStageCompleted)) {
+            update_task_calc_completed_stages(update_task);
         }
-        update_task->state.current_stage_idx++;
-        update_task_set_status(update_task, NULL);
     }
 
-    if(progress > 100) {
-        progress = 100;
+    /* Store stage progress for all non-error updates - to provide details on error state */
+    if(!update_stage_is_error(stage)) {
+        update_task->state.stage_progress = progress;
     }
 
-    update_task->state.progress = progress;
+    /* Calculate "overall" progress, based on stage weights */
+    uint32_t adapted_progress = 1;
+    if(update_task->state.total_progress_points != 0) {
+        if(stage < UpdateTaskStageCompleted) {
+            adapted_progress = MIN(
+                (update_task->state.completed_stages_points +
+                 (update_task_stage_progress[update_task->state.stage].weight * progress / 100)) *
+                    100 / (update_task->state.total_progress_points),
+                100u);
+
+        } else {
+            adapted_progress = update_task->state.overall_progress;
+        }
+    }
+    update_task->state.overall_progress = adapted_progress;
+
     if(update_task->status_change_cb) {
         (update_task->status_change_cb)(
             string_get_cstr(update_task->state.status),
-            progress,
-            update_task->state.current_stage_idx,
-            update_task->state.total_stages,
-            update_task->state.stage >= UpdateTaskStageError,
+            adapted_progress,
+            update_stage_is_error(update_task->state.stage),
             update_task->status_change_cb_state);
     }
 }
@@ -106,8 +191,7 @@ static void update_task_worker_thread_cb(FuriThreadState state, void* context) {
         return;
     }
 
-    int32_t op_result = furi_thread_get_return_code(update_task->thread);
-    if(op_result == UPDATE_TASK_NOERR) {
+    if(furi_thread_get_return_code(update_task->thread) == UPDATE_TASK_NOERR) {
         osDelay(UPDATE_DELAY_OPERATION_OK);
         furi_hal_power_reset();
     }
@@ -117,7 +201,8 @@ UpdateTask* update_task_alloc() {
     UpdateTask* update_task = malloc(sizeof(UpdateTask));
 
     update_task->state.stage = UpdateTaskStageProgress;
-    update_task->state.progress = 0;
+    update_task->state.stage_progress = 0;
+    update_task->state.overall_progress = 0;
     string_init(update_task->state.status);
 
     update_task->manifest = update_manifest_alloc();
@@ -163,36 +248,66 @@ void update_task_free(UpdateTask* update_task) {
 
 bool update_task_parse_manifest(UpdateTask* update_task) {
     furi_assert(update_task);
+    update_task->state.stage_progress = 0;
+    update_task->state.overall_progress = 0;
+    update_task->state.total_progress_points = 0;
+    update_task->state.completed_stages_points = 0;
+    update_task->state.groups = 0;
+
     update_task_set_progress(update_task, UpdateTaskStageReadManifest, 0);
     bool result = false;
     string_t manifest_path;
     string_init(manifest_path);
 
     do {
-        update_task_set_progress(update_task, UpdateTaskStageProgress, 10);
-        if(!update_operation_get_current_package_path(
-               update_task->storage, update_task->update_path)) {
+        update_task_set_progress(update_task, UpdateTaskStageProgress, 13);
+        if(!furi_hal_version_do_i_belong_here()) {
             break;
         }
 
-        path_concat(
-            string_get_cstr(update_task->update_path),
-            UPDATE_MANIFEST_DEFAULT_NAME,
-            manifest_path);
+        update_task_set_progress(update_task, UpdateTaskStageProgress, 20);
+        if(!update_operation_get_current_package_manifest_path(
+               update_task->storage, manifest_path)) {
+            break;
+        }
+
+        path_extract_dirname(string_get_cstr(manifest_path), update_task->update_path);
         update_task_set_progress(update_task, UpdateTaskStageProgress, 30);
-        if(!update_manifest_init(update_task->manifest, string_get_cstr(manifest_path))) {
+
+        UpdateManifest* manifest = update_task->manifest;
+        if(!update_manifest_init(manifest, string_get_cstr(manifest_path))) {
+            break;
+        }
+
+        update_task_set_progress(update_task, UpdateTaskStageProgress, 40);
+        if(manifest->manifest_version < UPDATE_OPERATION_MIN_MANIFEST_VERSION) {
             break;
         }
 
         update_task_set_progress(update_task, UpdateTaskStageProgress, 50);
-        if(!string_empty_p(update_task->manifest->firmware_dfu_image) &&
-           !update_task_check_file_exists(update_task, update_task->manifest->firmware_dfu_image)) {
+        if(manifest->target != furi_hal_version_get_hw_target()) {
             break;
         }
 
-        update_task_set_progress(update_task, UpdateTaskStageProgress, 70);
-        if(!string_empty_p(update_task->manifest->radio_image) &&
-           !update_task_check_file_exists(update_task, update_task->manifest->radio_image)) {
+        update_task->state.groups = update_task_get_task_groups(update_task);
+        for(size_t stage_counter = 0; stage_counter < COUNT_OF(update_task_stage_progress);
+            ++stage_counter) {
+            const UpdateTaskStageGroupMap* grp_descr = &update_task_stage_progress[stage_counter];
+            if((grp_descr->group & update_task->state.groups) != 0) {
+                update_task->state.total_progress_points += grp_descr->weight;
+            }
+        }
+
+        update_task_set_progress(update_task, UpdateTaskStageProgress, 60);
+        if((update_task->state.groups & UpdateTaskStageGroupFirmware) &&
+           !update_task_check_file_exists(update_task, manifest->firmware_dfu_image)) {
+            break;
+        }
+
+        update_task_set_progress(update_task, UpdateTaskStageProgress, 80);
+        if((update_task->state.groups & UpdateTaskStageGroupRadio) &&
+           (!update_task_check_file_exists(update_task, manifest->radio_image) ||
+            (manifest->radio_version.version.type == 0))) {
             break;
         }
 
@@ -227,4 +342,4 @@ UpdateTaskState const* update_task_get_state(UpdateTask* update_task) {
 UpdateManifest const* update_task_get_manifest(UpdateTask* update_task) {
     furi_assert(update_task);
     return update_task->manifest;
-}
\ No newline at end of file
+}
diff --git a/applications/updater/util/update_task.h b/applications/updater/util/update_task.h
index 8afc3121..cfbbb850 100644
--- a/applications/updater/util/update_task.h
+++ b/applications/updater/util/update_task.h
@@ -10,46 +10,63 @@ extern "C" {
 #include <stdbool.h>
 #include <m-string.h>
 
-#define UPDATE_DELAY_OPERATION_OK 600
+#define UPDATE_DELAY_OPERATION_OK 300
 #define UPDATE_DELAY_OPERATION_ERROR INT_MAX
 
 typedef enum {
-    UpdateTaskStageProgress,
+    UpdateTaskStageProgress = 0,
+
     UpdateTaskStageReadManifest,
-    UpdateTaskStageValidateDFUImage,
-    UpdateTaskStageFlashWrite,
-    UpdateTaskStageFlashValidate,
+    UpdateTaskStageLfsBackup,
+
     UpdateTaskStageRadioImageValidate,
     UpdateTaskStageRadioErase,
     UpdateTaskStageRadioWrite,
     UpdateTaskStageRadioInstall,
     UpdateTaskStageRadioBusy,
+
     UpdateTaskStageOBValidation,
-    UpdateTaskStageLfsBackup,
+
+    UpdateTaskStageValidateDFUImage,
+    UpdateTaskStageFlashWrite,
+    UpdateTaskStageFlashValidate,
+
     UpdateTaskStageLfsRestore,
     UpdateTaskStageResourcesUpdate,
+
     UpdateTaskStageCompleted,
     UpdateTaskStageError,
-    UpdateTaskStageOBError
+    UpdateTaskStageOBError,
+    UpdateTaskStageMAX
 } UpdateTaskStage;
 
+inline bool update_stage_is_error(const UpdateTaskStage stage) {
+    return stage >= UpdateTaskStageError;
+}
+
+typedef enum {
+    UpdateTaskStageGroupMisc = 0,
+    UpdateTaskStageGroupPreUpdate = 1 << 1,
+    UpdateTaskStageGroupFirmware = 1 << 2,
+    UpdateTaskStageGroupOptionBytes = 1 << 3,
+    UpdateTaskStageGroupRadio = 1 << 4,
+    UpdateTaskStageGroupPostUpdate = 1 << 5,
+    UpdateTaskStageGroupResources = 1 << 6,
+} UpdateTaskStageGroup;
+
 typedef struct {
     UpdateTaskStage stage;
-    uint8_t progress;
-    uint8_t current_stage_idx;
-    uint8_t total_stages;
+    uint8_t overall_progress, stage_progress;
     string_t status;
+    UpdateTaskStageGroup groups;
+    uint32_t total_progress_points;
+    uint32_t completed_stages_points;
 } UpdateTaskState;
 
 typedef struct UpdateTask UpdateTask;
 
-typedef void (*updateProgressCb)(
-    const char* status,
-    const uint8_t stage_pct,
-    const uint8_t idx_stage,
-    const uint8_t total_stages,
-    bool failed,
-    void* state);
+typedef void (
+    *updateProgressCb)(const char* status, const uint8_t stage_pct, bool failed, void* state);
 
 UpdateTask* update_task_alloc();
 
@@ -67,4 +84,4 @@ UpdateManifest const* update_task_get_manifest(UpdateTask* update_task);
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/applications/updater/util/update_task_worker_backup.c b/applications/updater/util/update_task_worker_backup.c
index 38d71dfd..011510ed 100644
--- a/applications/updater/util/update_task_worker_backup.c
+++ b/applications/updater/util/update_task_worker_backup.c
@@ -27,7 +27,6 @@ static bool update_task_pre_update(UpdateTask* update_task) {
     path_concat(
         string_get_cstr(update_task->update_path), LFS_BACKUP_DEFAULT_FILENAME, backup_file_path);
 
-    update_task->state.total_stages = 1;
     update_task_set_progress(update_task, UpdateTaskStageLfsBackup, 0);
     /* to avoid bootloops */
     furi_hal_rtc_set_boot_mode(FuriHalRtcBootModeNormal);
@@ -62,22 +61,17 @@ static bool update_task_post_update(UpdateTask* update_task) {
     string_t file_path;
     string_init(file_path);
 
-    /* status text is too long, too few stages to bother with a counter */
-    update_task->state.total_stages = 0;
-
+    TarArchive* archive = tar_archive_alloc(update_task->storage);
     do {
-        CHECK_RESULT(update_task_parse_manifest(update_task));
         path_concat(
             string_get_cstr(update_task->update_path), LFS_BACKUP_DEFAULT_FILENAME, file_path);
 
-        bool unpack_resources = !string_empty_p(update_task->manifest->resource_bundle);
-
         update_task_set_progress(update_task, UpdateTaskStageLfsRestore, 0);
-        furi_hal_rtc_set_boot_mode(FuriHalRtcBootModeNormal);
+        update_operation_disarm();
 
         CHECK_RESULT(lfs_backup_unpack(update_task->storage, string_get_cstr(file_path)));
 
-        if(unpack_resources) {
+        if(update_task->state.groups & UpdateTaskStageGroupResources) {
             TarUnpackProgress progress = {
                 .update_task = update_task,
                 .total_files = 0,
@@ -90,20 +84,19 @@ static bool update_task_post_update(UpdateTask* update_task) {
                 string_get_cstr(update_task->manifest->resource_bundle),
                 file_path);
 
-            TarArchive* archive = tar_archive_alloc(update_task->storage);
             tar_archive_set_file_callback(archive, update_task_resource_unpack_cb, &progress);
-            success = tar_archive_open(archive, string_get_cstr(file_path), TAR_OPEN_MODE_READ);
-            if(success) {
-                progress.total_files = tar_archive_get_entries_count(archive);
-                if(progress.total_files > 0) {
-                    tar_archive_unpack_to(archive, EXT_PATH);
-                }
+            CHECK_RESULT(
+                tar_archive_open(archive, string_get_cstr(file_path), TAR_OPEN_MODE_READ));
+
+            progress.total_files = tar_archive_get_entries_count(archive);
+            if(progress.total_files > 0) {
+                CHECK_RESULT(tar_archive_unpack_to(archive, EXT_PATH));
             }
-            tar_archive_free(archive);
         }
         success = true;
     } while(false);
 
+    tar_archive_free(archive);
     string_clear(file_path);
     return success;
 }
@@ -116,18 +109,17 @@ int32_t update_task_worker_backup_restore(void* context) {
     FuriHalRtcBootMode boot_mode = furi_hal_rtc_get_boot_mode();
     if((boot_mode != FuriHalRtcBootModePreUpdate) && (boot_mode != FuriHalRtcBootModePostUpdate)) {
         /* no idea how we got here. Clear to normal boot */
-        furi_hal_rtc_set_boot_mode(FuriHalRtcBootModeNormal);
+        update_operation_disarm();
         return UPDATE_TASK_NOERR;
     }
 
-    update_task->state.current_stage_idx = 0;
-
-    if(!update_operation_get_current_package_path(update_task->storage, update_task->update_path)) {
+    if(!update_task_parse_manifest(update_task)) {
         return UPDATE_TASK_FAILED;
     }
 
-    /* Waiting for BT service to 'start', so we don't race for boot mode */
+    /* Waiting for BT service to 'start', so we don't race for boot mode flag */
     furi_record_open("bt");
+    furi_record_close("bt");
 
     if(boot_mode == FuriHalRtcBootModePreUpdate) {
         success = update_task_pre_update(update_task);
@@ -135,13 +127,11 @@ int32_t update_task_worker_backup_restore(void* context) {
         success = update_task_post_update(update_task);
     }
 
-    furi_record_close("bt");
-
-    if(success) {
-        update_task_set_progress(update_task, UpdateTaskStageCompleted, 100);
-    } else {
-        update_task_set_progress(update_task, UpdateTaskStageError, update_task->state.progress);
+    if(!success) {
+        update_task_set_progress(update_task, UpdateTaskStageError, 0);
+        return UPDATE_TASK_FAILED;
     }
 
-    return success ? UPDATE_TASK_NOERR : UPDATE_TASK_FAILED;
+    update_task_set_progress(update_task, UpdateTaskStageCompleted, 100);
+    return UPDATE_TASK_NOERR;
 }
diff --git a/applications/updater/util/update_task_worker_flasher.c b/applications/updater/util/update_task_worker_flasher.c
index 22e94fd0..1f22e2f7 100644
--- a/applications/updater/util/update_task_worker_flasher.c
+++ b/applications/updater/util/update_task_worker_flasher.c
@@ -111,19 +111,13 @@ static bool update_task_write_stack_data(UpdateTask* update_task) {
         }
 
         bytes_read = storage_file_read(update_task->file, fw_block, n_bytes_to_read);
-        if(bytes_read == 0) {
-            break;
-        }
+        CHECK_RESULT(bytes_read != 0);
 
         int16_t i_page =
             furi_hal_flash_get_page_number(update_task->manifest->radio_address + element_offs);
-        if(i_page < 0) {
-            break;
-        }
+        CHECK_RESULT(i_page >= 0);
 
-        if(!furi_hal_flash_program_page(i_page, fw_block, bytes_read)) {
-            break;
-        }
+        CHECK_RESULT(furi_hal_flash_program_page(i_page, fw_block, bytes_read));
 
         element_offs += bytes_read;
         update_task_set_progress(
@@ -142,19 +136,19 @@ static void update_task_wait_for_restart(UpdateTask* update_task) {
 
 static bool update_task_write_stack(UpdateTask* update_task) {
     bool success = false;
+    UpdateManifest* manifest = update_task->manifest;
     do {
         FURI_LOG_W(TAG, "Writing stack");
         update_task_set_progress(update_task, UpdateTaskStageRadioImageValidate, 0);
-        CHECK_RESULT(update_task_open_file(update_task, update_task->manifest->radio_image));
+        CHECK_RESULT(update_task_open_file(update_task, manifest->radio_image));
         CHECK_RESULT(
             crc32_calc_file(update_task->file, &update_task_file_progress, update_task) ==
-            update_task->manifest->radio_crc);
+            manifest->radio_crc);
 
         CHECK_RESULT(update_task_write_stack_data(update_task));
         update_task_set_progress(update_task, UpdateTaskStageRadioInstall, 0);
         CHECK_RESULT(
-            ble_glue_fus_stack_install(update_task->manifest->radio_address, 0) !=
-            BleGlueCommandResultError);
+            ble_glue_fus_stack_install(manifest->radio_address, 0) != BleGlueCommandResultError);
         update_task_set_progress(update_task, UpdateTaskStageRadioInstall, 80);
         CHECK_RESULT(ble_glue_fus_wait_operation() == BleGlueCommandResultOK);
         update_task_set_progress(update_task, UpdateTaskStageRadioInstall, 100);
@@ -280,7 +274,6 @@ bool update_task_validate_optionbytes(UpdateTask* update_task) {
                               manifest->ob_write_mask.obs[idx].values.base) != 0;
 
             if(can_patch) {
-                /* patch & restart loop */
                 const uint32_t patched_value =
                     /* take all non-writable bits from real value */
                     (device_ob_value & ~(manifest->ob_write_mask.obs[idx].values.base)) |
@@ -297,8 +290,7 @@ bool update_task_validate_optionbytes(UpdateTask* update_task) {
 
                 if(!is_fixed) {
                     /* Things are so bad that fixing what we are allowed to still doesn't match
-                     * reference value 
-                     */
+                     * reference value */
                     FURI_LOG_W(
                         TAG,
                         "OB #%d is FUBAR (fixed&masked %08X, not %08X)",
@@ -317,11 +309,11 @@ bool update_task_validate_optionbytes(UpdateTask* update_task) {
         }
     }
     if(!match) {
-        update_task_set_progress(update_task, UpdateTaskStageOBError, 95);
+        update_task_set_progress(update_task, UpdateTaskStageOBError, 0);
     }
 
     if(ob_dirty) {
-        FURI_LOG_W(TAG, "OB were changed, applying");
+        FURI_LOG_W(TAG, "OBs were changed, applying");
         furi_hal_flash_ob_apply();
     }
     return match;
@@ -332,24 +324,18 @@ int32_t update_task_worker_flash_writer(void* context) {
     UpdateTask* update_task = context;
     bool success = false;
 
-    update_task->state.current_stage_idx = 0;
-    update_task->state.total_stages = 0;
-
     do {
         CHECK_RESULT(update_task_parse_manifest(update_task));
 
-        if(!string_empty_p(update_task->manifest->radio_image)) {
+        if(update_task->state.groups & UpdateTaskStageGroupRadio) {
             CHECK_RESULT(update_task_manage_radiostack(update_task));
         }
 
-        bool check_ob = update_manifest_has_obdata(update_task->manifest);
-        if(check_ob) {
-            update_task->state.total_stages++;
+        if(update_task->state.groups & UpdateTaskStageGroupOptionBytes) {
             CHECK_RESULT(update_task_validate_optionbytes(update_task));
         }
 
-        if(!string_empty_p(update_task->manifest->firmware_dfu_image)) {
-            update_task->state.total_stages += 4;
+        if(update_task->state.groups & UpdateTaskStageGroupFirmware) {
             CHECK_RESULT(update_task_write_dfu(update_task));
         }
 
@@ -359,5 +345,10 @@ int32_t update_task_worker_flash_writer(void* context) {
         success = true;
     } while(false);
 
-    return success ? UPDATE_TASK_NOERR : UPDATE_TASK_FAILED;
-}
\ No newline at end of file
+    if(!success) {
+        update_task_set_progress(update_task, UpdateTaskStageError, 0);
+        return UPDATE_TASK_FAILED;
+    }
+
+    return UPDATE_TASK_NOERR;
+}
diff --git a/applications/updater/views/updater_main.c b/applications/updater/views/updater_main.c
index 8d9b3e95..72541b9a 100644
--- a/applications/updater/views/updater_main.c
+++ b/applications/updater/views/updater_main.c
@@ -15,12 +15,11 @@ struct UpdaterMainView {
     void* context;
 };
 
-static const uint8_t PROGRESS_RENDER_STEP = 3; /* percent, to limit rendering rate */
+static const uint8_t PROGRESS_RENDER_STEP = 1; /* percent, to limit rendering rate */
 
 typedef struct {
     string_t status;
     uint8_t progress, rendered_progress;
-    uint8_t idx_stage, total_stages;
     bool failed;
 } UpdaterProgressModel;
 
@@ -28,14 +27,10 @@ void updater_main_model_set_state(
     UpdaterMainView* main_view,
     const char* message,
     uint8_t progress,
-    uint8_t idx_stage,
-    uint8_t total_stages,
     bool failed) {
     with_view_model(
         main_view->view, (UpdaterProgressModel * model) {
             model->failed = failed;
-            model->idx_stage = idx_stage;
-            model->total_stages = total_stages;
             model->progress = progress;
             if(string_cmp_str(model->status, message)) {
                 string_set(model->status, message);
@@ -65,14 +60,10 @@ bool updater_main_input(InputEvent* event, void* context) {
         return true;
     }
 
-    if(event->type != InputTypeShort) {
-        return true;
-    }
-
-    if(event->key == InputKeyOk) {
+    if((event->type == InputTypeShort) && (event->key == InputKeyOk)) {
         view_dispatcher_send_custom_event(
             main_view->view_dispatcher, UpdaterCustomEventRetryUpdate);
-    } else if(event->key == InputKeyBack) {
+    } else if((event->type == InputTypeLong) && (event->key == InputKeyBack)) {
         view_dispatcher_send_custom_event(
             main_view->view_dispatcher, UpdaterCustomEventCancelUpdate);
     }
@@ -85,27 +76,25 @@ static void updater_main_draw_callback(Canvas* canvas, void* _model) {
 
     canvas_set_font(canvas, FontPrimary);
 
-    uint16_t y_offset = model->failed ? 5 : 13;
-    string_t status_text;
-    if(!model->failed && (model->idx_stage != 0) && (model->idx_stage <= model->total_stages)) {
-        string_init_printf(
-            status_text,
-            "[%d/%d] %s",
-            model->idx_stage,
-            model->total_stages,
-            string_get_cstr(model->status));
-    } else {
-        string_init_set(status_text, model->status);
-    }
-    canvas_draw_str_aligned(
-        canvas, 128 / 2, y_offset, AlignCenter, AlignTop, string_get_cstr(status_text));
-    string_clear(status_text);
     if(model->failed) {
+        canvas_draw_str_aligned(canvas, 42, 16, AlignLeft, AlignTop, "Update Failed!");
         canvas_set_font(canvas, FontSecondary);
         canvas_draw_str_aligned(
-            canvas, 128 / 2, 20, AlignCenter, AlignTop, "[OK] to retry, [Back] to abort");
+            canvas, 42, 32, AlignLeft, AlignTop, string_get_cstr(model->status));
+
+        canvas_draw_icon(canvas, 7, 16, &I_Warning_30x23);
+        canvas_draw_str_aligned(
+            canvas, 18, 51, AlignLeft, AlignTop, "to retry, hold       to abort");
+        canvas_draw_icon(canvas, 7, 50, &I_Ok_btn_9x9);
+        canvas_draw_icon(canvas, 75, 51, &I_Pin_back_arrow_10x8);
+    } else {
+        canvas_draw_str_aligned(canvas, 55, 14, AlignLeft, AlignTop, "UPDATING");
+        canvas_set_font(canvas, FontSecondary);
+        canvas_draw_str_aligned(
+            canvas, 64, 51, AlignCenter, AlignTop, string_get_cstr(model->status));
+        canvas_draw_icon(canvas, 4, 5, &I_Updating_32x40);
+        elements_progress_bar(canvas, 42, 29, 80, (float)model->progress / 100);
     }
-    elements_progress_bar(canvas, 14, 35, 100, (float)model->progress / 100);
 }
 
 UpdaterMainView* updater_main_alloc() {
@@ -116,7 +105,7 @@ UpdaterMainView* updater_main_alloc() {
 
     with_view_model(
         main_view->view, (UpdaterProgressModel * model) {
-            string_init_set(model->status, "Waiting for storage");
+            string_init_set(model->status, "Waiting for SD card");
             return true;
         });
 
diff --git a/applications/updater/views/updater_main.h b/applications/updater/views/updater_main.h
index 3c55a8c2..81a0e86c 100644
--- a/applications/updater/views/updater_main.h
+++ b/applications/updater/views/updater_main.h
@@ -17,12 +17,10 @@ void updater_main_model_set_state(
     UpdaterMainView* main_view,
     const char* message,
     uint8_t progress,
-    uint8_t idx_stage,
-    uint8_t total_stages,
     bool failed);
 
 void updater_main_set_storage_pubsub(UpdaterMainView* main_view, FuriPubSubSubscription* sub);
 
 FuriPubSubSubscription* updater_main_get_storage_pubsub(UpdaterMainView* main_view);
 
-void updater_main_set_view_dispatcher(UpdaterMainView* main_view, ViewDispatcher* view_dispatcher);
\ No newline at end of file
+void updater_main_set_view_dispatcher(UpdaterMainView* main_view, ViewDispatcher* view_dispatcher);
diff --git a/assets/compiled/assets_icons.c b/assets/compiled/assets_icons.c
index 8b17d078..709fab45 100644
--- a/assets/compiled/assets_icons.c
+++ b/assets/compiled/assets_icons.c
@@ -642,6 +642,9 @@ const uint8_t* const _I_Drive_112x35[] = {_I_Drive_112x35_0};
 const uint8_t _I_Error_62x31_0[] = {0x01,0x00,0x9e,0x00,0x00,0x47,0xc2,0xfe,0x07,0x58,0x66,0x02,0x02,0x07,0x48,0x1c,0x02,0x0c,0x06,0x3c,0x00,0x08,0x61,0x00,0x73,0xa0,0x00,0x86,0x20,0x07,0x39,0x00,0x09,0x01,0x88,0x07,0x70,0xd1,0x09,0x0b,0xe0,0x07,0x38,0x1c,0x62,0x11,0x08,0x80,0x8c,0x8a,0x0f,0x1c,0x82,0x7d,0x20,0x58,0x0b,0xe4,0x02,0x1d,0x0e,0x82,0x6e,0xa0,0xb8,0x0c,0x1c,0x02,0x39,0x07,0x82,0x4e,0xa0,0xb7,0x08,0x04,0x07,0x71,0x03,0x82,0x7e,0xa0,0xb0,0xe8,0x04,0x0b,0xe1,0x01,0x81,0x01,0xc6,0x01,0xc0,0x81,0xf8,0x01,0x42,0x27,0x18,0x04,0xc0,0x1e,0x63,0x71,0x3d,0x0c,0x08,0x3e,0x20,0xa1,0x22,0x94,0x08,0x5e,0x21,0x51,0x0f,0x08,0xbc,0x47,0xe2,0x07,0x29,0x81,0x40,0x49,0xe2,0x07,0x28,0x61,0x80,0x4b,0xe2,0x07,0x28,0x19,0xe0,0xc0,0xe2,0x0d,0x18,0xc0,0x1d,0x00,0x02,0xa8,0x30,0x39,0x2e,0x10,0x0e,0x5e,0x00,0x3b,0x7e,0x00,0xec,0x46,0x10,0x3f,0x80,0xc8,};
 const uint8_t* const _I_Error_62x31[] = {_I_Error_62x31_0};
 
+const uint8_t _I_Updating_32x40_0[] = {0x01,0x00,0x56,0x00,0xc0,0x7f,0xc0,0x03,0xc0,0x01,0x97,0x82,0x07,0x00,0xe0,0x5c,0x00,0x65,0x38,0x01,0x94,0x70,0x06,0x50,0xe0,0x19,0x41,0xc0,0x65,0xff,0x01,0xb4,0x0c,0x02,0x7e,0x08,0x38,0x0c,0x7c,0xd6,0x70,0x18,0xfb,0xfe,0xfc,0x0c,0x18,0xc8,0x78,0x20,0x33,0x81,0x8f,0x8a,0x07,0x3e,0xbe,0x70,0x38,0x71,0xff,0xc7,0x0f,0xc7,0x0f,0xf8,0x71,0xc0,0x76,0x13,0x30,0xd9,0x88,0xcc,0x5f,0x03,0xb2,0x21,0xa1,0x2c,0xc0,0x26,0x82,0x10,0x1f,0x80,0xd1,0x24,0x40,0x04,};
+const uint8_t* const _I_Updating_32x40[] = {_I_Updating_32x40_0};
+
 const uint8_t _I_DolphinExcited_64x63_0[] = {0x01,0x00,0x36,0x01,0x00,0x25,0x00,0x0f,0xd2,0x00,0x3b,0xe0,0x00,0xeb,0x10,0x0c,0x34,0x40,0x30,0xd0,0x88,0x80,0x1d,0xa1,0x00,0x42,0xfc,0x7f,0xc0,0x63,0x04,0x01,0x0e,0x02,0x0f,0x00,0x00,0x8c,0x08,0x0e,0x37,0x00,0x10,0xc6,0x20,0x10,0x10,0xd9,0x11,0x92,0x1c,0x1a,0x3e,0x00,0x04,0x42,0x02,0x1a,0x20,0xb0,0xce,0x00,0x64,0x07,0x20,0x59,0x16,0x50,0x36,0x45,0x94,0x84,0x78,0x20,0x60,0x75,0x8e,0x43,0x06,0x63,0x3c,0x33,0x94,0x0c,0xd2,0x5c,0x30,0x38,0xe4,0x08,0x43,0x10,0xc0,0x5e,0x06,0x22,0x53,0x1a,0x02,0x08,0x7f,0xd0,0x32,0xc1,0x50,0x21,0x14,0x0e,0x70,0x1c,0x46,0xe2,0x07,0x19,0x06,0x3c,0xdc,0x20,0x91,0xae,0x01,0xcc,0xbe,0x30,0x09,0xfc,0x12,0x41,0xff,0x83,0xcc,0x0a,0xa3,0x1f,0x03,0x99,0xe8,0x7c,0x10,0xf8,0x25,0xa0,0x5e,0x50,0x0f,0x84,0x1e,0x09,0x54,0x03,0x9f,0xf2,0x07,0x02,0xd5,0x11,0xca,0x01,0xfe,0x80,0xc0,0xaa,0x9f,0xf0,0x39,0x5f,0xd0,0x43,0xaa,0x83,0x41,0x92,0xc3,0x1f,0x03,0x8d,0x52,0x02,0x2e,0x25,0xc9,0x6a,0x99,0x46,0xa6,0x2a,0xa0,0x1c,0xaf,0xca,0x62,0x94,0x28,0xcb,0x7e,0x0f,0x15,0x71,0xf8,0x3c,0x22,0x71,0x03,0x8a,0x84,0x67,0x18,0x0f,0xac,0x1c,0x0e,0x38,0x08,0x0c,0x3e,0x01,0xae,0xbd,0x13,0x0c,0x0e,0x35,0x8e,0xa8,0x1c,0xb0,0x1f,0xf8,0x06,0x83,0xf4,0x27,0x38,0x07,0xff,0xff,0x8f,0x03,0xa0,0x4c,0x80,0xed,0x60,0x03,0xb4,0x60,0x0e,0xd0,0x60,0x3a,0x87,0x84,0x0e,0xb7,0xc2,0xfa,0x18,0x05,0x44,0x20,0x73,0xff,0xf7,0xce,0xe4,0x07,0x2d,0x52,0x2c,0x80,0xe7,0x54,0xea,0x81,0xd7,0x50,0x0f,0x7a,0xaa,0x3d,0x41,0xe2,0x07,0x5a,0x80,0x3c,0xa0,0x40,0x72,0xd0,0x6a,0x80,0xa2,0x07,0x3a,0x05,0x54,0x8e,0x20,0x73,0xc0,0x03,0xd8,0x60,0x30,0x40,0x3a,0xc0,0x00,0xee,0xea,0x10,0x3b,0x80,};
 const uint8_t* const _I_DolphinExcited_64x63[] = {_I_DolphinExcited_64x63_0};
 
@@ -835,6 +838,7 @@ const Icon I_Connect_me_62x31 = {.width=62,.height=31,.frame_count=1,.frame_rate
 const Icon I_Connected_62x31 = {.width=62,.height=31,.frame_count=1,.frame_rate=0,.frames=_I_Connected_62x31};
 const Icon I_Drive_112x35 = {.width=112,.height=35,.frame_count=1,.frame_rate=0,.frames=_I_Drive_112x35};
 const Icon I_Error_62x31 = {.width=62,.height=31,.frame_count=1,.frame_rate=0,.frames=_I_Error_62x31};
+const Icon I_Updating_32x40 = {.width=32,.height=40,.frame_count=1,.frame_rate=0,.frames=_I_Updating_32x40};
 const Icon I_DolphinExcited_64x63 = {.width=64,.height=63,.frame_count=1,.frame_rate=0,.frames=_I_DolphinExcited_64x63};
 const Icon I_DolphinMafia_115x62 = {.width=115,.height=62,.frame_count=1,.frame_rate=0,.frames=_I_DolphinMafia_115x62};
 const Icon I_DolphinNice_96x59 = {.width=96,.height=59,.frame_count=1,.frame_rate=0,.frames=_I_DolphinNice_96x59};
diff --git a/assets/compiled/assets_icons.h b/assets/compiled/assets_icons.h
index be1023f6..12ddb78e 100644
--- a/assets/compiled/assets_icons.h
+++ b/assets/compiled/assets_icons.h
@@ -173,6 +173,7 @@ extern const Icon I_Connect_me_62x31;
 extern const Icon I_Connected_62x31;
 extern const Icon I_Drive_112x35;
 extern const Icon I_Error_62x31;
+extern const Icon I_Updating_32x40;
 extern const Icon I_DolphinExcited_64x63;
 extern const Icon I_DolphinMafia_115x62;
 extern const Icon I_DolphinNice_96x59;
diff --git a/assets/compiled/flipper.pb.h b/assets/compiled/flipper.pb.h
index 88548bea..3199090d 100644
--- a/assets/compiled/flipper.pb.h
+++ b/assets/compiled/flipper.pb.h
@@ -103,6 +103,7 @@ typedef struct _PB_Main {
         PB_Storage_BackupRestoreRequest storage_backup_restore_request;
         PB_System_PowerInfoRequest system_power_info_request;
         PB_System_PowerInfoResponse system_power_info_response;
+        PB_System_UpdateResponse system_update_response;
     } content; 
 } PB_Main;
 
@@ -171,6 +172,7 @@ extern "C" {
 #define PB_Main_storage_backup_restore_request_tag 43
 #define PB_Main_system_power_info_request_tag    44
 #define PB_Main_system_power_info_response_tag   45
+#define PB_Main_system_update_response_tag       46
 
 /* Struct field encoding specification for nanopb */
 #define PB_Empty_FIELDLIST(X, a) \
@@ -228,7 +230,8 @@ X(a, STATIC,   ONEOF,    MSG_W_CB, (content,system_update_request,content.system
 X(a, STATIC,   ONEOF,    MSG_W_CB, (content,storage_backup_create_request,content.storage_backup_create_request),  42) \
 X(a, STATIC,   ONEOF,    MSG_W_CB, (content,storage_backup_restore_request,content.storage_backup_restore_request),  43) \
 X(a, STATIC,   ONEOF,    MSG_W_CB, (content,system_power_info_request,content.system_power_info_request),  44) \
-X(a, STATIC,   ONEOF,    MSG_W_CB, (content,system_power_info_response,content.system_power_info_response),  45)
+X(a, STATIC,   ONEOF,    MSG_W_CB, (content,system_power_info_response,content.system_power_info_response),  45) \
+X(a, STATIC,   ONEOF,    MSG_W_CB, (content,system_update_response,content.system_update_response),  46)
 #define PB_Main_CALLBACK NULL
 #define PB_Main_DEFAULT NULL
 #define PB_Main_content_empty_MSGTYPE PB_Empty
@@ -273,6 +276,7 @@ X(a, STATIC,   ONEOF,    MSG_W_CB, (content,system_power_info_response,content.s
 #define PB_Main_content_storage_backup_restore_request_MSGTYPE PB_Storage_BackupRestoreRequest
 #define PB_Main_content_system_power_info_request_MSGTYPE PB_System_PowerInfoRequest
 #define PB_Main_content_system_power_info_response_MSGTYPE PB_System_PowerInfoResponse
+#define PB_Main_content_system_update_response_MSGTYPE PB_System_UpdateResponse
 
 extern const pb_msgdesc_t PB_Empty_msg;
 extern const pb_msgdesc_t PB_StopSession_msg;
diff --git a/assets/compiled/protobuf_version.h b/assets/compiled/protobuf_version.h
index 0459d120..6b401411 100644
--- a/assets/compiled/protobuf_version.h
+++ b/assets/compiled/protobuf_version.h
@@ -1,3 +1,3 @@
 #pragma once
 #define PROTOBUF_MAJOR_VERSION 0
-#define PROTOBUF_MINOR_VERSION 6
+#define PROTOBUF_MINOR_VERSION 7
diff --git a/assets/compiled/system.pb.c b/assets/compiled/system.pb.c
index 45ab3a01..e05ff90e 100644
--- a/assets/compiled/system.pb.c
+++ b/assets/compiled/system.pb.c
@@ -48,6 +48,9 @@ PB_BIND(PB_System_ProtobufVersionResponse, PB_System_ProtobufVersionResponse, AU
 PB_BIND(PB_System_UpdateRequest, PB_System_UpdateRequest, AUTO)
 
 
+PB_BIND(PB_System_UpdateResponse, PB_System_UpdateResponse, AUTO)
+
+
 PB_BIND(PB_System_PowerInfoRequest, PB_System_PowerInfoRequest, AUTO)
 
 
@@ -56,3 +59,4 @@ PB_BIND(PB_System_PowerInfoResponse, PB_System_PowerInfoResponse, AUTO)
 
 
 
+
diff --git a/assets/compiled/system.pb.h b/assets/compiled/system.pb.h
index 978219ae..aef2c75b 100644
--- a/assets/compiled/system.pb.h
+++ b/assets/compiled/system.pb.h
@@ -16,6 +16,17 @@ typedef enum _PB_System_RebootRequest_RebootMode {
     PB_System_RebootRequest_RebootMode_UPDATE = 2 
 } PB_System_RebootRequest_RebootMode;
 
+typedef enum _PB_System_UpdateResponse_UpdateResultCode { 
+    PB_System_UpdateResponse_UpdateResultCode_OK = 0, 
+    PB_System_UpdateResponse_UpdateResultCode_ManifestPathInvalid = 1, 
+    PB_System_UpdateResponse_UpdateResultCode_ManifestFolderNotFound = 2, 
+    PB_System_UpdateResponse_UpdateResultCode_ManifestInvalid = 3, 
+    PB_System_UpdateResponse_UpdateResultCode_StageMissing = 4, 
+    PB_System_UpdateResponse_UpdateResultCode_StageIntegrityError = 5, 
+    PB_System_UpdateResponse_UpdateResultCode_ManifestPointerError = 6, 
+    PB_System_UpdateResponse_UpdateResultCode_TargetMismatch = 7 
+} PB_System_UpdateResponse_UpdateResultCode;
+
 /* Struct definitions */
 typedef struct _PB_System_DeviceInfoRequest { 
     char dummy_field;
@@ -84,6 +95,10 @@ typedef struct _PB_System_RebootRequest {
     PB_System_RebootRequest_RebootMode mode; 
 } PB_System_RebootRequest;
 
+typedef struct _PB_System_UpdateResponse { 
+    PB_System_UpdateResponse_UpdateResultCode code; 
+} PB_System_UpdateResponse;
+
 typedef struct _PB_System_GetDateTimeResponse { 
     bool has_datetime;
     PB_System_DateTime datetime; 
@@ -100,6 +115,10 @@ typedef struct _PB_System_SetDateTimeRequest {
 #define _PB_System_RebootRequest_RebootMode_MAX PB_System_RebootRequest_RebootMode_UPDATE
 #define _PB_System_RebootRequest_RebootMode_ARRAYSIZE ((PB_System_RebootRequest_RebootMode)(PB_System_RebootRequest_RebootMode_UPDATE+1))
 
+#define _PB_System_UpdateResponse_UpdateResultCode_MIN PB_System_UpdateResponse_UpdateResultCode_OK
+#define _PB_System_UpdateResponse_UpdateResultCode_MAX PB_System_UpdateResponse_UpdateResultCode_TargetMismatch
+#define _PB_System_UpdateResponse_UpdateResultCode_ARRAYSIZE ((PB_System_UpdateResponse_UpdateResultCode)(PB_System_UpdateResponse_UpdateResultCode_TargetMismatch+1))
+
 
 #ifdef __cplusplus
 extern "C" {
@@ -120,6 +139,7 @@ extern "C" {
 #define PB_System_ProtobufVersionRequest_init_default {0}
 #define PB_System_ProtobufVersionResponse_init_default {0, 0}
 #define PB_System_UpdateRequest_init_default     {NULL}
+#define PB_System_UpdateResponse_init_default    {_PB_System_UpdateResponse_UpdateResultCode_MIN}
 #define PB_System_PowerInfoRequest_init_default  {0}
 #define PB_System_PowerInfoResponse_init_default {NULL, NULL}
 #define PB_System_PingRequest_init_zero          {NULL}
@@ -136,6 +156,7 @@ extern "C" {
 #define PB_System_ProtobufVersionRequest_init_zero {0}
 #define PB_System_ProtobufVersionResponse_init_zero {0, 0}
 #define PB_System_UpdateRequest_init_zero        {NULL}
+#define PB_System_UpdateResponse_init_zero       {_PB_System_UpdateResponse_UpdateResultCode_MIN}
 #define PB_System_PowerInfoRequest_init_zero     {0}
 #define PB_System_PowerInfoResponse_init_zero    {NULL, NULL}
 
@@ -157,6 +178,7 @@ extern "C" {
 #define PB_System_ProtobufVersionResponse_major_tag 1
 #define PB_System_ProtobufVersionResponse_minor_tag 2
 #define PB_System_RebootRequest_mode_tag         1
+#define PB_System_UpdateResponse_code_tag        1
 #define PB_System_GetDateTimeResponse_datetime_tag 1
 #define PB_System_SetDateTimeRequest_datetime_tag 1
 
@@ -241,6 +263,11 @@ X(a, POINTER,  SINGULAR, STRING,   update_manifest,   1)
 #define PB_System_UpdateRequest_CALLBACK NULL
 #define PB_System_UpdateRequest_DEFAULT NULL
 
+#define PB_System_UpdateResponse_FIELDLIST(X, a) \
+X(a, STATIC,   SINGULAR, UENUM,    code,              1)
+#define PB_System_UpdateResponse_CALLBACK NULL
+#define PB_System_UpdateResponse_DEFAULT NULL
+
 #define PB_System_PowerInfoRequest_FIELDLIST(X, a) \
 
 #define PB_System_PowerInfoRequest_CALLBACK NULL
@@ -266,6 +293,7 @@ extern const pb_msgdesc_t PB_System_PlayAudiovisualAlertRequest_msg;
 extern const pb_msgdesc_t PB_System_ProtobufVersionRequest_msg;
 extern const pb_msgdesc_t PB_System_ProtobufVersionResponse_msg;
 extern const pb_msgdesc_t PB_System_UpdateRequest_msg;
+extern const pb_msgdesc_t PB_System_UpdateResponse_msg;
 extern const pb_msgdesc_t PB_System_PowerInfoRequest_msg;
 extern const pb_msgdesc_t PB_System_PowerInfoResponse_msg;
 
@@ -284,6 +312,7 @@ extern const pb_msgdesc_t PB_System_PowerInfoResponse_msg;
 #define PB_System_ProtobufVersionRequest_fields &PB_System_ProtobufVersionRequest_msg
 #define PB_System_ProtobufVersionResponse_fields &PB_System_ProtobufVersionResponse_msg
 #define PB_System_UpdateRequest_fields &PB_System_UpdateRequest_msg
+#define PB_System_UpdateResponse_fields &PB_System_UpdateResponse_msg
 #define PB_System_PowerInfoRequest_fields &PB_System_PowerInfoRequest_msg
 #define PB_System_PowerInfoResponse_fields &PB_System_PowerInfoResponse_msg
 
@@ -304,6 +333,7 @@ extern const pb_msgdesc_t PB_System_PowerInfoResponse_msg;
 #define PB_System_ProtobufVersionResponse_size   12
 #define PB_System_RebootRequest_size             2
 #define PB_System_SetDateTimeRequest_size        24
+#define PB_System_UpdateResponse_size            2
 
 #ifdef __cplusplus
 } /* extern "C" */
diff --git a/assets/icons/Update/Updating_32x40.png b/assets/icons/Update/Updating_32x40.png
new file mode 100644
index 00000000..d8f7654b
Binary files /dev/null and b/assets/icons/Update/Updating_32x40.png differ
diff --git a/assets/protobuf b/assets/protobuf
index 0ad90705..ffa62429 160000
--- a/assets/protobuf
+++ b/assets/protobuf
@@ -1 +1 @@
-Subproject commit 0ad90705b9434b6f8fb2c4b605069f0d56d8cc70
+Subproject commit ffa62429f3c678537e0e883a3a8c3ae5f1398ed4
diff --git a/assets/resources/Manifest b/assets/resources/Manifest
index f19edd7d..08d95044 100644
--- a/assets/resources/Manifest
+++ b/assets/resources/Manifest
@@ -1,8 +1,9 @@
 V:0
-T:1651076680
+T:1651524332
 D:badusb
 D:dolphin
 D:infrared
+D:music_player
 D:nfc
 D:subghz
 D:u2f
@@ -223,6 +224,7 @@ F:f267f0654781049ca323b11bb4375519:581:dolphin/L3_Lab_research_128x54/frame_9.bm
 F:41106c0cbc5144f151b2b2d3daaa0527:727:dolphin/L3_Lab_research_128x54/meta.txt
 D:infrared/assets
 F:d895fda2f48c6cc4c55e8a398ff52e43:74300:infrared/assets/tv.ir
+F:a157a80f5a668700403d870c23b9567d:470:music_player/Marble_Machine.fmf
 D:nfc/assets
 F:c6826a621d081d68309e4be424d3d974:4715:nfc/assets/aid.nfc
 F:86efbebdf41bb6bf15cc51ef88f069d5:2565:nfc/assets/country_code.nfc
diff --git a/assets/resources/music_player/Marble_Machine.fmf b/assets/resources/music_player/Marble_Machine.fmf
new file mode 100644
index 00000000..7403c9a0
--- /dev/null
+++ b/assets/resources/music_player/Marble_Machine.fmf
@@ -0,0 +1,6 @@
+Filetype: Flipper Music Format
+Version: 0
+BPM: 130
+Duration: 8
+Octave: 5
+Notes: E6, P, E, B, 4P, E, A, G, A, E, B, P, G, A, D6, 4P, D, B, 4P, D, A, G, A, D, F#, P, G, A, D6, 4P, F#, B, 4P, F#, D6, C6, B, F#, A, P, G, F#, E, P, C, E, B, B4, C, D, D6, C6, B, F#, A, P, G, A, E6, 4P, E, B, 4P, E, A, G, A, E, B, P, G, A, D6, 4P, D, B, 4P, D, A, G, A, D, F#, P, G, A, D6, 4P, F#, B, 4P, F#, D6, C6, B, F#, A, P, G, F#, E, P, C, E, B, B4, C, D, D6, C6, B, F#, A, P, G, A, E6
diff --git a/assets/unit_tests/subghz/firefly_raw.sub b/assets/unit_tests/subghz/firefly_raw.sub
new file mode 100644
index 00000000..c143fa02
--- /dev/null
+++ b/assets/unit_tests/subghz/firefly_raw.sub
@@ -0,0 +1,11 @@
+Filetype: Flipper SubGhz RAW File
+Version: 1
+Frequency: 300000000
+Preset: FuriHalSubGhzPresetOok650Async
+Protocol: RAW
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\ No newline at end of file
diff --git a/assets/unit_tests/subghz/firely.sub b/assets/unit_tests/subghz/firely.sub
new file mode 100644
index 00000000..a38c21df
--- /dev/null
+++ b/assets/unit_tests/subghz/firely.sub
@@ -0,0 +1,7 @@
+Filetype: Flipper SubGhz Key File
+Version: 1
+Frequency: 300000000
+Preset: FuriHalSubGhzPresetOok650Async
+Protocol: Firefly
+Bit: 10
+Key: 00 00 00 00 00 00 01 E4
diff --git a/assets/unit_tests/subghz/holtek.sub b/assets/unit_tests/subghz/holtek.sub
new file mode 100644
index 00000000..b77a759d
--- /dev/null
+++ b/assets/unit_tests/subghz/holtek.sub
@@ -0,0 +1,7 @@
+Filetype: Flipper SubGhz Key File
+Version: 1
+Frequency: 418000000
+Preset: FuriHalSubGhzPresetOok650Async
+Protocol: Holtek
+Bit: 40
+Key: 00 00 00 50 00 00 AA BA
diff --git a/assets/unit_tests/subghz/holtek_raw.sub b/assets/unit_tests/subghz/holtek_raw.sub
new file mode 100644
index 00000000..8eac0a39
--- /dev/null
+++ b/assets/unit_tests/subghz/holtek_raw.sub
@@ -0,0 +1,19 @@
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+Frequency: 418000000
+Preset: FuriHalSubGhzPresetOok650Async
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diff --git a/assets/unit_tests/subghz/megacode.sub b/assets/unit_tests/subghz/megacode.sub
new file mode 100644
index 00000000..e968fd9b
--- /dev/null
+++ b/assets/unit_tests/subghz/megacode.sub
@@ -0,0 +1,7 @@
+Filetype: Flipper SubGhz Key File
+Version: 1
+Frequency: 318000000
+Preset: FuriHalSubGhzPresetOok650Async
+Protocol: MegaCode
+Bit: 24
+Key: 00 00 00 00 00 8A E2 D2
diff --git a/assets/unit_tests/subghz/megacode_raw.sub b/assets/unit_tests/subghz/megacode_raw.sub
new file mode 100644
index 00000000..c2235d8c
--- /dev/null
+++ b/assets/unit_tests/subghz/megacode_raw.sub
@@ -0,0 +1,8 @@
+Filetype: Flipper SubGhz RAW File
+Version: 1
+Frequency: 318000000
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diff --git a/assets/unit_tests/subghz/security_pls_2_0_raw.sub b/assets/unit_tests/subghz/security_pls_2_0_raw.sub
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index 00000000..4cd9822c
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diff --git a/assets/unit_tests/subghz/test_random_raw.sub b/assets/unit_tests/subghz/test_random_raw.sub
index 77e81f23..9d1cdd67 100644
--- a/assets/unit_tests/subghz/test_random_raw.sub
+++ b/assets/unit_tests/subghz/test_random_raw.sub
@@ -63,3 +63,40 @@ RAW_Data: 231 -196 1265 -100 133 -68 933 -100 7293 -66 331 -132 295 -68 1157 -98
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diff --git a/core/furi/check.c b/core/furi/check.c
index 5ea76614..b59e490c 100644
--- a/core/furi/check.c
+++ b/core/furi/check.c
@@ -71,4 +71,4 @@ FURI_NORETURN void furi_halt(const char* message) {
     furi_hal_console_puts("\r\nSystem halted. Bye-bye!\r\n");
     furi_hal_console_puts("\033[0m\r\n");
     __furi_halt();
-}
\ No newline at end of file
+}
diff --git a/core/furi/check.h b/core/furi/check.h
index adea4039..4165c3c2 100644
--- a/core/furi/check.h
+++ b/core/furi/check.h
@@ -14,7 +14,10 @@ extern "C" {
 #ifdef FURI_DEBUG
 #define furi_assert(__e) ((__e) ? (void)0 : furi_crash("furi_assert failed\r\n"))
 #else
-#define furi_assert(__e) ((void)0)
+#define furi_assert(__e) \
+    do {                 \
+        ((void)(__e));   \
+    } while(0)
 #endif
 
 /** Crash system */
diff --git a/core/furi/common_defines.h b/core/furi/common_defines.h
index 9c4f7b18..5b0e6971 100644
--- a/core/furi/common_defines.h
+++ b/core/furi/common_defines.h
@@ -40,11 +40,6 @@ extern "C" {
 #define CLAMP(x, upper, lower) (MIN(upper, MAX(x, lower)))
 #endif
 
-// need some common semantics for those two
-#ifndef SIZEOF_ARRAY
-#define SIZEOF_ARRAY(arr) (sizeof(arr) / sizeof(arr[0]))
-#endif
-
 #ifndef COUNT_OF
 #define COUNT_OF(x) (sizeof(x) / sizeof(x[0]))
 #endif
diff --git a/core/furi/memmgr.c b/core/furi/memmgr.c
index 457520d9..01cf573e 100644
--- a/core/furi/memmgr.c
+++ b/core/furi/memmgr.c
@@ -1,4 +1,5 @@
 #include "memmgr.h"
+#include "common_defines.h"
 #include <string.h>
 
 extern void* pvPortMalloc(size_t xSize);
@@ -60,17 +61,21 @@ size_t memmgr_get_minimum_free_heap(void) {
 }
 
 void* __wrap__malloc_r(struct _reent* r, size_t size) {
+    UNUSED(r);
     return pvPortMalloc(size);
 }
 
 void __wrap__free_r(struct _reent* r, void* ptr) {
+    UNUSED(r);
     vPortFree(ptr);
 }
 
 void* __wrap__calloc_r(struct _reent* r, size_t count, size_t size) {
+    UNUSED(r);
     return calloc(count, size);
 }
 
 void* __wrap__realloc_r(struct _reent* r, void* ptr, size_t size) {
+    UNUSED(r);
     return realloc(ptr, size);
 }
diff --git a/core/furi/memmgr_heap.c b/core/furi/memmgr_heap.c
index 8544092e..618d7e74 100644
--- a/core/furi/memmgr_heap.c
+++ b/core/furi/memmgr_heap.c
@@ -37,6 +37,7 @@
 #include "memmgr_heap.h"
 #include "check.h"
 #include <stdlib.h>
+#include <stdio.h>
 #include <cmsis_os2.h>
 #include <stm32wbxx.h>
 #include <furi_hal_console.h>
@@ -205,6 +206,7 @@ static inline void traceMALLOC(void* pointer, size_t size) {
 
 #undef traceFREE
 static inline void traceFREE(void* pointer, size_t size) {
+    UNUSED(size);
     osThreadId_t thread_id = osThreadGetId();
     if(thread_id && memmgr_heap_thread_trace_depth == 0) {
         memmgr_heap_thread_trace_depth++;
diff --git a/core/furi/stdglue.c b/core/furi/stdglue.c
index 4e727202..1eccafc9 100644
--- a/core/furi/stdglue.c
+++ b/core/furi/stdglue.c
@@ -93,9 +93,11 @@ bool furi_stdglue_set_thread_stdout_callback(FuriStdglueWriteCallback callback)
 }
 
 void __malloc_lock(struct _reent* REENT) {
+    UNUSED(REENT);
     vTaskSuspendAll();
 }
 
 void __malloc_unlock(struct _reent* REENT) {
+    UNUSED(REENT);
     xTaskResumeAll();
 }
diff --git a/core/furi/thread.h b/core/furi/thread.h
index ea1da27a..83e6bb93 100644
--- a/core/furi/thread.h
+++ b/core/furi/thread.h
@@ -160,4 +160,4 @@ int32_t furi_thread_get_return_code(FuriThread* thread);
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/core/furi/valuemutex.c b/core/furi/valuemutex.c
index 77a99937..6010c963 100644
--- a/core/furi/valuemutex.c
+++ b/core/furi/valuemutex.c
@@ -55,4 +55,4 @@ bool write_mutex(ValueMutex* valuemutex, void* data, size_t len, uint32_t timeou
     if(!release_mutex(valuemutex, value)) return false;
 
     return true;
-}
\ No newline at end of file
+}
diff --git a/core/furi/valuemutex.h b/core/furi/valuemutex.h
index 84a08093..63dfac61 100644
--- a/core/furi/valuemutex.h
+++ b/core/furi/valuemutex.h
@@ -146,4 +146,4 @@ void consumer_app(void* _p) {
     }
 }
 ```
-*/
\ No newline at end of file
+*/
diff --git a/docker-compose.yml b/docker-compose.yml
index 68aa14c1..39aca411 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -9,4 +9,4 @@ services:
     volumes:
       - .:/project
       - /dev/bus/usb:/dev/bus/usb
-    working_dir: '/project'
\ No newline at end of file
+    working_dir: '/project'
diff --git a/documentation/OTA.md b/documentation/OTA.md
new file mode 100644
index 00000000..472e81b6
--- /dev/null
+++ b/documentation/OTA.md
@@ -0,0 +1,105 @@
+# Executing code from RAM
+
+In Flipper firmware, we have a special boot mode that loads a specially crafted system image into RAM and transfers control to it. System image executing in RAM has full write access to whole Flipper's flash memory — something that's not possible when running main code from same flash.
+
+We leverage that boot mode to perform OTA firmware updates, including operations on radio stack running on second MCU core.
+
+
+# How does Flipper OTA work?
+
+Installation of OTA updates goes through 3 stages:
+
+## 1. Backing up internal storage (`/int/`)
+
+It is a special partition of Flipper's flash memory, taking up all available space not used by firmware code. Newer versions of firmware may be of different size, and simply installing them would cause flash repartitioning and data loss.
+
+So, before taking any action upon the firmware, we back up current configuration from `/int/` into a plain tar archive on SD card.
+
+
+## 2. Performing device update
+
+For that, main firmware loads an updater image - a customized build of main Flipper firmware — into RAM and runs it. Updater performs operations on system flash that are described by an Update manifest file.
+
+First, if there's a Radio stack image bundled with the update, updater compares its version with currently installed one. If they don't match, updater performs stack deinstallation followed by writing and installing a new one. The installation itself is performed by proprietary software, FUS, running on Core2, and leads to a series of system restarts.
+
+Then updater validates and corrects Option Bytes — a special memory region containing low-level configuration for Flipper's MCU.
+
+After that, updater loads a `.dfu` file with firmware to be flashed, checks its integrity using CRC32, writes it to system flash and validates written data.
+
+
+## 3. Restoring internal storage and updating resources
+
+After performing operations on flash memory, system restarts into newly flashed firmware. Then it performs restoration of previously backed up `/int` contents.
+
+If update package contains an additional resources archive, it is extracted onto SD card.
+
+
+# Update manifest
+
+Update packages come with a manifest that contains a description of its contents. The manifest is in Flipper File Format — a simple text file, comprised of key-value pairs.
+
+## Mandatory fields
+
+Update manifest must contain the following keys in given order:
+
+* __Filetype__: a constant string, "Flipper firmware upgrade configuration";
+
+* __Version__: manifest version. Current value is 2;
+
+* __Info__: arbitraty string, describing package contents;
+
+* __Target__: hardware revision the package is built for;
+
+* __Loader__: file name of stage 2 loader that is executed from RAM;
+
+* __Loader CRC__: CRC32 of loader file. Note that it is represented in little-endian hex.
+
+## Optional fields
+
+Other fields may have empty values, is such case updater skips all operations related to such values.
+
+* __Radio__: file name of radio stack image, provided by STM;
+
+* __Radio address__: address to install the radio stack at. It is specified in Release Notes by STM;
+
+* __Radio version__: Radio major, minor and sub versions followed by branch, release, and stack type packed into 6 hex-encoded bytes;
+
+* __Radio CRC__: CRC32 of radio image;
+
+* __Resources__: file name of TAR acrhive with resources to be extracted on SD card;
+
+* __OB reference__, __OB mask__, __OB write mask__: reference values for validating and correcting option bytes.
+
+
+# OTA update error codes
+
+We designed the OTA update process to be as fail-safe as possible. We don't start any risky operation before validating all related pieces of data to ensure we don't leave the device in partially updated, or bricked, state.
+
+Even if something goes wrong, Updater gives you an option to retry failed operations, and reports its state with an error code. These error codes have an `[XX-YY]` format, where `XX` encodes an operation that failed, and `YY` contains extra details on its progress where the error occured.
+
+|    Stage description    |   Code | Progress   | Description                                |
+|:-----------------------:|-------:|------------|--------------------------------------------|
+| Loading update manifest |  **1** | **13**     | Updater reported hardware version mismatch |
+|                         |        | **20**     | Failed to get saved manifest path          |
+|                         |        | **30**     | Failed to load manifest                    |
+|                         |        | **40**     | Unsupported update package version         |
+|                         |        | **50**     | Package has mismatching HW target          |
+|                         |        | **60**     | Missing DFU file                           |
+|                         |        | **80**     | Missing radio firmware file                |
+| Checking DFU file       |  **2** | **0**      | Error opening DFU file                     |
+|                         |        | **1-98**   | Error reading DFU file                     |
+|                         |        | **99-100** | Corrupted DFU file                         |
+| Writing flash           |  **3** | **0-100**  | Block read/write error                     |
+| Validating flash        |  **4** | **0-100**  | Block read/write error                     |
+| Checking radio FW       |  **5** | **0-99**   | Error reading radio firmware file          |
+|                         |        | **100**    | CRC mismatch                               |
+| Uninstalling radio FW   |  **6** | **0**      | SHCI Install command error                 |
+|                         |        | **80**     | Error awaiting command status              |
+| Writing radio FW        |  **7** | **0-100**  | Block read/write error                     |
+| Installing radio FW     |  **8** | **0**      | SHCI Install command error                 |
+|                         |        | **80**     | Error awaiting command status              |
+| Radio is updating       |  **9** | **10**     | Error waiting for operation completion     |
+| Validating opt. bytes   | **10** | **yy**     | Option byte code                           |
+| Backing up LFS          | **11** | **0-100**  | Block read/write error                     |
+| Restoring LFS           | **12** | **0-100**  | Block read/write error                     |
+| Updating resources      | **13** | **0-100**  | SD card read/write error                   |
diff --git a/firmware/targets/f7/Inc/FreeRTOSConfig.h b/firmware/targets/f7/Inc/FreeRTOSConfig.h
index c3b2117c..0204826a 100644
--- a/firmware/targets/f7/Inc/FreeRTOSConfig.h
+++ b/firmware/targets/f7/Inc/FreeRTOSConfig.h
@@ -2,6 +2,7 @@
 
 #if defined(__ICCARM__) || defined(__CC_ARM) || defined(__GNUC__)
 #include <stdint.h>
+#pragma GCC diagnostic ignored "-Wredundant-decls"
 extern uint32_t SystemCoreClock;
 #endif
 
diff --git a/firmware/targets/f7/Inc/stm32_assert.h b/firmware/targets/f7/Inc/stm32_assert.h
new file mode 100644
index 00000000..3b0a543d
--- /dev/null
+++ b/firmware/targets/f7/Inc/stm32_assert.h
@@ -0,0 +1,52 @@
+/**
+  ******************************************************************************
+  * @file    stm32_assert.h
+  * @author  MCD Application Team
+  * @brief   STM32 assert template file.
+  *          This file should be copied to the application folder and renamed
+  *          to stm32_assert.h.
+  ******************************************************************************
+  * @attention
+  *
+  * Copyright (c) 2019 STMicroelectronics.
+  * All rights reserved.
+  *
+  * This software is licensed under terms that can be found in the LICENSE file
+  * in the root directory of this software component.
+  * If no LICENSE file comes with this software, it is provided AS-IS.
+  *
+  ******************************************************************************
+  */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef STM32_ASSERT_H
+#define STM32_ASSERT_H
+
+#include <furi/check.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Exported types ------------------------------------------------------------*/
+/* Exported constants --------------------------------------------------------*/
+/* Includes ------------------------------------------------------------------*/
+/* Exported macro ------------------------------------------------------------*/
+
+/* We're confident in the parameters we pass to LL functions, so we can skip asserts
+ * since they introduce significant bloat to debug builds */
+
+#ifdef FURI_LL_DEBUG
+#define assert_param furi_assert
+#else
+#define assert_param(__e) \
+    do {                  \
+        ((void)(__e));    \
+    } while(0)
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* STM32_ASSERT_H */
\ No newline at end of file
diff --git a/firmware/targets/f7/Src/main.c b/firmware/targets/f7/Src/main.c
index 1865f8d1..3de1c6ca 100644
--- a/firmware/targets/f7/Src/main.c
+++ b/firmware/targets/f7/Src/main.c
@@ -3,6 +3,7 @@
 #include <flipper.h>
 #include <alt_boot.h>
 #include <semphr.h>
+#include <update_util/update_operation.h>
 
 #define TAG "Main"
 
@@ -68,16 +69,3 @@ void Error_Handler(void) {
 void abort() {
     furi_crash("AbortHandler");
 }
-
-#ifdef USE_FULL_ASSERT
-/**
-    * @brief  Reports the name of the source file and the source line number
-    *         where the assert_param error has occurred.
-    * @param  file: pointer to the source file name
-    * @param  line: assert_param error line source number
-    * @retval None
-    */
-void assert_failed(uint8_t* file, uint32_t line) {
-    furi_crash("HAL assert failed");
-}
-#endif /* USE_FULL_ASSERT */
diff --git a/firmware/targets/f7/Src/update.c b/firmware/targets/f7/Src/update.c
index 4b3ee3ad..a91972e9 100644
--- a/firmware/targets/f7/Src/update.c
+++ b/firmware/targets/f7/Src/update.c
@@ -7,12 +7,14 @@
 #include <flipper_format/flipper_format.h>
 
 #include <update_util/update_manifest.h>
+#include <update_util/update_operation.h>
 #include <toolbox/path.h>
 #include <toolbox/crc32_calc.h>
 
-static FATFS* pfs = NULL;
+#define FS_ROOT_PATH "/"
+#define UPDATE_POINTER_FILE_PATH FS_ROOT_PATH UPDATE_MANIFEST_POINTER_FILE_NAME
 
-static const char FS_ROOT_PATH[] = "/";
+static FATFS* pfs = NULL;
 
 #define CHECK_FRESULT(result)   \
     {                           \
@@ -99,41 +101,34 @@ static bool flipper_update_load_stage(const string_t work_dir, UpdateManifest* m
     return false;
 }
 
-static bool flipper_update_get_work_directory(string_t out_dir) {
-    const uint32_t update_index = furi_hal_rtc_get_register(FuriHalRtcRegisterUpdateFolderFSIndex);
-    if(update_index == 0) {
-        string_set(out_dir, UPDATE_DIR_DEFAULT_REL_PATH);
-        return true;
-    }
-
-    DIR dir;
-    UINT entry_idx = 0;
-    FILINFO fno;
-    CHECK_FRESULT(f_opendir(&dir, UPDATE_DIR_DEFAULT_REL_PATH));
-    string_set(out_dir, UPDATE_DIR_DEFAULT_REL_PATH);
-
-    while(f_readdir(&dir, &fno) == FR_OK) {
-        entry_idx++;
-        if(fno.fname[0] == '\0') {
-            return false;
-        }
-        if(entry_idx == update_index) {
-            path_append(out_dir, fno.fname);
-            return true;
-        }
-    }
-
-    string_reset(out_dir);
-    return false;
-}
-
-static UpdateManifest* flipper_update_process_manifest(const string_t work_dir) {
+static bool flipper_update_get_manifest_path(string_t out_path) {
     FIL file;
     FILINFO stat;
+    uint16_t size_read = 0;
+    char manifest_name_buf[UPDATE_OPERATION_MAX_MANIFEST_PATH_LEN] = {0};
 
-    string_t manifest_path;
-    string_init_set(manifest_path, work_dir);
-    path_append(manifest_path, UPDATE_MANIFEST_DEFAULT_NAME);
+    string_reset(out_path);
+    CHECK_FRESULT(f_stat(UPDATE_POINTER_FILE_PATH, &stat));
+    CHECK_FRESULT(f_open(&file, UPDATE_POINTER_FILE_PATH, FA_OPEN_EXISTING | FA_READ));
+    do {
+        if(f_read(&file, manifest_name_buf, UPDATE_OPERATION_MAX_MANIFEST_PATH_LEN, &size_read) !=
+           FR_OK) {
+            break;
+        }
+
+        if((size_read == 0) || (size_read == UPDATE_OPERATION_MAX_MANIFEST_PATH_LEN)) {
+            break;
+        }
+        string_set_str(out_path, manifest_name_buf);
+        string_right(out_path, strlen("/ext"));
+    } while(0);
+    f_close(&file);
+    return !string_empty_p(out_path);
+}
+
+static UpdateManifest* flipper_update_process_manifest(const string_t manifest_path) {
+    FIL file;
+    FILINFO stat;
 
     CHECK_FRESULT(f_stat(string_get_cstr(manifest_path), &stat));
     CHECK_FRESULT(f_open(&file, string_get_cstr(manifest_path), FA_OPEN_EXISTING | FA_READ));
@@ -163,7 +158,7 @@ static UpdateManifest* flipper_update_process_manifest(const string_t work_dir)
         }
     } while(false);
 
-    string_clear(manifest_path);
+    f_close(&file);
     free(manifest_data);
     return manifest;
 }
@@ -173,22 +168,25 @@ void flipper_boot_update_exec() {
         return;
     }
 
-    string_t work_dir;
+    string_t work_dir, manifest_path;
     string_init(work_dir);
+    string_init(manifest_path);
     do {
-        if(!flipper_update_get_work_directory(work_dir)) {
+        if(!flipper_update_get_manifest_path(manifest_path)) {
             break;
         }
 
-        UpdateManifest* manifest = flipper_update_process_manifest(work_dir);
+        UpdateManifest* manifest = flipper_update_process_manifest(manifest_path);
         if(!manifest) {
             break;
         }
 
+        path_extract_dirname(string_get_cstr(manifest_path), work_dir);
         if(!flipper_update_load_stage(work_dir, manifest)) {
             update_manifest_free(manifest);
         }
     } while(false);
+    string_clear(manifest_path);
     string_clear(work_dir);
     free(pfs);
 }
diff --git a/firmware/targets/f7/ble_glue/app_debug.h b/firmware/targets/f7/ble_glue/app_debug.h
index e1bd65fc..92a54d75 100644
--- a/firmware/targets/f7/ble_glue/app_debug.h
+++ b/firmware/targets/f7/ble_glue/app_debug.h
@@ -35,4 +35,4 @@ void APPD_EnableCPU2(void);
 
 #endif /*__APP_DEBUG_H */
 
-/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
\ No newline at end of file
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/firmware/targets/f7/ble_glue/ble_app.c b/firmware/targets/f7/ble_glue/ble_app.c
index d76b4e7b..618e2b94 100644
--- a/firmware/targets/f7/ble_glue/ble_app.c
+++ b/firmware/targets/f7/ble_glue/ble_app.c
@@ -121,6 +121,7 @@ void ble_app_thread_stop() {
 }
 
 static int32_t ble_app_hci_thread(void* arg) {
+    UNUSED(arg);
     uint32_t flags = 0;
 
     while(1) {
@@ -138,6 +139,7 @@ static int32_t ble_app_hci_thread(void* arg) {
 
 // Called by WPAN lib
 void hci_notify_asynch_evt(void* pdata) {
+    UNUSED(pdata);
     if(ble_app) {
         osThreadId_t thread_id = furi_thread_get_thread_id(ble_app->thread);
         furi_assert(thread_id);
@@ -146,12 +148,14 @@ void hci_notify_asynch_evt(void* pdata) {
 }
 
 void hci_cmd_resp_release(uint32_t flag) {
+    UNUSED(flag);
     if(ble_app) {
         osSemaphoreRelease(ble_app->hci_sem);
     }
 }
 
 void hci_cmd_resp_wait(uint32_t timeout) {
+    UNUSED(timeout);
     if(ble_app) {
         osSemaphoreAcquire(ble_app->hci_sem, osWaitForever);
     }
diff --git a/firmware/targets/f7/ble_glue/ble_glue.c b/firmware/targets/f7/ble_glue/ble_glue.c
index ec4a617b..6a100bea 100644
--- a/firmware/targets/f7/ble_glue/ble_glue.c
+++ b/firmware/targets/f7/ble_glue/ble_glue.c
@@ -349,6 +349,7 @@ void ble_glue_thread_stop() {
 
 // Wrap functions
 static int32_t ble_glue_shci_thread(void* context) {
+    UNUSED(context);
     uint32_t flags = 0;
 
     while(true) {
diff --git a/firmware/targets/f7/ble_glue/ble_glue.h b/firmware/targets/f7/ble_glue/ble_glue.h
index e5c2738d..fe43ae09 100644
--- a/firmware/targets/f7/ble_glue/ble_glue.h
+++ b/firmware/targets/f7/ble_glue/ble_glue.h
@@ -121,4 +121,4 @@ BleGlueCommandResult ble_glue_fus_wait_operation();
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/firmware/targets/f7/ble_glue/gap.c b/firmware/targets/f7/ble_glue/gap.c
index 45191a5a..f2a1a96f 100644
--- a/firmware/targets/f7/ble_glue/gap.c
+++ b/firmware/targets/f7/ble_glue/gap.c
@@ -489,6 +489,7 @@ void gap_stop_advertising() {
 }
 
 static void gap_advetise_timer_callback(void* context) {
+    UNUSED(context);
     GapCommand command = GapCommandAdvLowPower;
     furi_check(osMessageQueuePut(gap->command_queue, &command, 0, 0) == osOK);
 }
@@ -587,6 +588,7 @@ void gap_thread_stop() {
 }
 
 static int32_t gap_app(void* context) {
+    UNUSED(context);
     GapCommand command;
     while(1) {
         osStatus_t status = osMessageQueueGet(gap->command_queue, &command, NULL, osWaitForever);
diff --git a/firmware/targets/f7/fatfs/stm32_adafruit_sd.c b/firmware/targets/f7/fatfs/stm32_adafruit_sd.c
index 246eabf0..fc2924d4 100644
--- a/firmware/targets/f7/fatfs/stm32_adafruit_sd.c
+++ b/firmware/targets/f7/fatfs/stm32_adafruit_sd.c
@@ -419,6 +419,7 @@ uint8_t BSP_SD_GetCardInfo(SD_CardInfo* pCardInfo) {
   */
 uint8_t
     BSP_SD_ReadBlocks(uint32_t* pData, uint32_t ReadAddr, uint32_t NumOfBlocks, uint32_t Timeout) {
+    UNUSED(Timeout); // FIXME!
     uint32_t offset = 0;
     uint32_t addr;
     uint8_t retr = BSP_SD_ERROR;
@@ -500,6 +501,7 @@ uint8_t BSP_SD_WriteBlocks(
     uint32_t WriteAddr,
     uint32_t NumOfBlocks,
     uint32_t Timeout) {
+    UNUSED(Timeout); // FIXME!
     uint32_t offset = 0;
     uint32_t addr;
     uint8_t retr = BSP_SD_ERROR;
diff --git a/firmware/targets/f7/fatfs/user_diskio.c b/firmware/targets/f7/fatfs/user_diskio.c
index 94a7d4d3..b504fcd5 100644
--- a/firmware/targets/f7/fatfs/user_diskio.c
+++ b/firmware/targets/f7/fatfs/user_diskio.c
@@ -44,6 +44,7 @@
 static volatile DSTATUS Stat = STA_NOINIT;
 
 static DSTATUS User_CheckStatus(BYTE lun) {
+    UNUSED(lun);
     Stat = STA_NOINIT;
     if(BSP_SD_GetCardState() == MSD_OK) {
         Stat &= ~STA_NOINIT;
@@ -106,6 +107,7 @@ DSTATUS USER_initialize(BYTE pdrv) {
   */
 DSTATUS USER_status(BYTE pdrv) {
     /* USER CODE BEGIN STATUS */
+    UNUSED(pdrv);
     return Stat;
     /* USER CODE END STATUS */
 }
@@ -120,6 +122,7 @@ DSTATUS USER_status(BYTE pdrv) {
   */
 DRESULT USER_read(BYTE pdrv, BYTE* buff, DWORD sector, UINT count) {
     /* USER CODE BEGIN READ */
+    UNUSED(pdrv);
     DRESULT res = RES_ERROR;
 
     furi_hal_spi_acquire(&furi_hal_spi_bus_handle_sd_fast);
@@ -151,6 +154,7 @@ DRESULT USER_read(BYTE pdrv, BYTE* buff, DWORD sector, UINT count) {
 DRESULT USER_write(BYTE pdrv, const BYTE* buff, DWORD sector, UINT count) {
     /* USER CODE BEGIN WRITE */
     /* USER CODE HERE */
+    UNUSED(pdrv);
     DRESULT res = RES_ERROR;
 
     furi_hal_spi_acquire(&furi_hal_spi_bus_handle_sd_fast);
@@ -181,6 +185,7 @@ DRESULT USER_write(BYTE pdrv, const BYTE* buff, DWORD sector, UINT count) {
 #if _USE_IOCTL == 1
 DRESULT USER_ioctl(BYTE pdrv, BYTE cmd, void* buff) {
     /* USER CODE BEGIN IOCTL */
+    UNUSED(pdrv);
     DRESULT res = RES_ERROR;
     BSP_SD_CardInfo CardInfo;
 
@@ -228,4 +233,4 @@ DRESULT USER_ioctl(BYTE pdrv, BYTE cmd, void* buff) {
 }
 #endif /* _USE_IOCTL == 1 */
 
-/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
\ No newline at end of file
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
diff --git a/firmware/targets/f7/furi_hal/furi_hal_crc.h b/firmware/targets/f7/furi_hal/furi_hal_crc.h
index 110e6c05..8abaaad1 100644
--- a/firmware/targets/f7/furi_hal/furi_hal_crc.h
+++ b/firmware/targets/f7/furi_hal/furi_hal_crc.h
@@ -32,4 +32,4 @@ uint32_t furi_hal_crc_feed(void* data, uint16_t length);
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/firmware/targets/f7/furi_hal/furi_hal_i2c_config.h b/firmware/targets/f7/furi_hal/furi_hal_i2c_config.h
index 03c0f1ca..a8fb9183 100644
--- a/firmware/targets/f7/furi_hal/furi_hal_i2c_config.h
+++ b/firmware/targets/f7/furi_hal/furi_hal_i2c_config.h
@@ -28,4 +28,4 @@ extern FuriHalI2cBusHandle furi_hal_i2c_handle_external;
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/firmware/targets/f7/furi_hal/furi_hal_i2c_types.h b/firmware/targets/f7/furi_hal/furi_hal_i2c_types.h
index 0f2b735e..13f36105 100644
--- a/firmware/targets/f7/furi_hal/furi_hal_i2c_types.h
+++ b/firmware/targets/f7/furi_hal/furi_hal_i2c_types.h
@@ -48,4 +48,4 @@ struct FuriHalI2cBusHandle {
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/firmware/targets/f7/furi_hal/furi_hal_info.c b/firmware/targets/f7/furi_hal/furi_hal_info.c
index bbb3907d..cf7140eb 100644
--- a/firmware/targets/f7/furi_hal/furi_hal_info.c
+++ b/firmware/targets/f7/furi_hal/furi_hal_info.c
@@ -132,4 +132,4 @@ void furi_hal_info_get(FuriHalInfoValueCallback out, void* context) {
     out("protobuf_version_minor", string_get_cstr(value), true, context);
 
     string_clear(value);
-}
\ No newline at end of file
+}
diff --git a/firmware/targets/f7/furi_hal/furi_hal_nfc.c b/firmware/targets/f7/furi_hal/furi_hal_nfc.c
index bf9ea18c..768a4bac 100755
--- a/firmware/targets/f7/furi_hal/furi_hal_nfc.c
+++ b/firmware/targets/f7/furi_hal/furi_hal_nfc.c
@@ -240,6 +240,7 @@ void rfal_interrupt_callback_handler() {
 }
 
 void rfal_state_changed_callback(void* context) {
+    UNUSED(context);
     osEventFlagsSet(event, EVENT_FLAG_STATE_CHANGED);
 }
 
@@ -289,7 +290,7 @@ bool furi_hal_nfc_emulate_nfca(
         buff_rx_len = 0;
         buff_tx_len = 0;
         uint32_t flag = osEventFlagsWait(event, EVENT_FLAG_ALL, osFlagsWaitAny, timeout);
-        if(flag == osErrorTimeout || flag == EVENT_FLAG_STOP) {
+        if(flag == osFlagsErrorTimeout || flag == EVENT_FLAG_STOP) {
             break;
         }
         bool data_received = false;
diff --git a/firmware/targets/f7/furi_hal/furi_hal_os.c b/firmware/targets/f7/furi_hal/furi_hal_os.c
index 8beb0d08..9dd7191f 100644
--- a/firmware/targets/f7/furi_hal/furi_hal_os.c
+++ b/firmware/targets/f7/furi_hal/furi_hal_os.c
@@ -1,5 +1,6 @@
 #include <furi_hal_os.h>
 #include <furi_hal_clock.h>
+#include <furi_hal_console.h>
 #include <furi_hal_power.h>
 #include <furi_hal_gpio.h>
 #include <furi_hal_resources.h>
@@ -178,5 +179,9 @@ void vPortSuppressTicksAndSleep(TickType_t expected_idle_ticks) {
 }
 
 void vApplicationStackOverflowHook(TaskHandle_t xTask, char* pcTaskName) {
+    UNUSED(xTask);
+    furi_hal_console_puts("\r\n\r\n stack overflow in ");
+    furi_hal_console_puts(pcTaskName);
+    furi_hal_console_puts("\r\n\r\n");
     furi_crash("StackOverflow");
 }
diff --git a/firmware/targets/f7/furi_hal/furi_hal_random.c b/firmware/targets/f7/furi_hal/furi_hal_random.c
index 5dfda2b2..cd019c0d 100644
--- a/firmware/targets/f7/furi_hal/furi_hal_random.c
+++ b/firmware/targets/f7/furi_hal/furi_hal_random.c
@@ -7,6 +7,8 @@
 
 #include <hw_conf.h>
 
+#define TAG "FuriHalRandom"
+
 uint32_t furi_hal_random_get() {
     while(LL_HSEM_1StepLock(HSEM, CFG_HW_RNG_SEMID))
         ;
@@ -51,8 +53,13 @@ void furi_hal_random_fill_buf(uint8_t* buf, uint32_t len) {
 }
 
 void srand(unsigned seed) {
+    UNUSED(seed);
 }
 
 int rand() {
     return (furi_hal_random_get() & RAND_MAX);
 }
+
+long random() {
+    return (furi_hal_random_get() & RAND_MAX);
+}
diff --git a/firmware/targets/f7/furi_hal/furi_hal_resources.c b/firmware/targets/f7/furi_hal/furi_hal_resources.c
index e548ffaf..4209e0cf 100644
--- a/firmware/targets/f7/furi_hal/furi_hal_resources.c
+++ b/firmware/targets/f7/furi_hal/furi_hal_resources.c
@@ -1,4 +1,5 @@
 #include <furi_hal_resources.h>
+#include <furi_hal_delay.h>
 #include <furi.h>
 
 #include <stm32wbxx_ll_rcc.h>
@@ -87,10 +88,19 @@ void furi_hal_resources_init_early() {
     SET_BIT(PWR->CR3, PWR_CR3_APC);
 
     // Hard reset USB
+    furi_hal_gpio_write(&gpio_usb_dm, 1);
+    furi_hal_gpio_write(&gpio_usb_dp, 1);
     furi_hal_gpio_init_simple(&gpio_usb_dm, GpioModeOutputOpenDrain);
     furi_hal_gpio_init_simple(&gpio_usb_dp, GpioModeOutputOpenDrain);
     furi_hal_gpio_write(&gpio_usb_dm, 0);
     furi_hal_gpio_write(&gpio_usb_dp, 0);
+    furi_hal_delay_us(5); // Device Driven disconnect: 2.5us + extra to compensate cables
+    furi_hal_gpio_write(&gpio_usb_dm, 1);
+    furi_hal_gpio_write(&gpio_usb_dp, 1);
+    furi_hal_gpio_init_simple(&gpio_usb_dm, GpioModeAnalog);
+    furi_hal_gpio_init_simple(&gpio_usb_dp, GpioModeAnalog);
+    furi_hal_gpio_write(&gpio_usb_dm, 0);
+    furi_hal_gpio_write(&gpio_usb_dp, 0);
 
     // External header pins
     furi_hal_gpio_init(&gpio_ext_pc0, GpioModeAnalog, GpioPullNo, GpioSpeedLow);
diff --git a/firmware/targets/f7/furi_hal/furi_hal_resources.h b/firmware/targets/f7/furi_hal/furi_hal_resources.h
index 69485307..f12edcb3 100644
--- a/firmware/targets/f7/furi_hal/furi_hal_resources.h
+++ b/firmware/targets/f7/furi_hal/furi_hal_resources.h
@@ -10,7 +10,7 @@ extern "C" {
 #endif
 
 /* Input Related Constants */
-#define INPUT_DEBOUNCE_TICKS 20
+#define INPUT_DEBOUNCE_TICKS 30
 
 /* Input Keys */
 typedef enum {
diff --git a/firmware/targets/f7/furi_hal/furi_hal_rfid.c b/firmware/targets/f7/furi_hal/furi_hal_rfid.c
index 964bd12b..86fecc99 100644
--- a/firmware/targets/f7/furi_hal/furi_hal_rfid.c
+++ b/firmware/targets/f7/furi_hal/furi_hal_rfid.c
@@ -152,6 +152,7 @@ void furi_hal_rfid_tim_read_stop() {
 }
 
 void furi_hal_rfid_tim_emulate(float freq) {
+    UNUSED(freq); // FIXME
     // basic PWM setup with needed freq and internal clock
     FURI_CRITICAL_ENTER();
     LL_TIM_DeInit(FURI_HAL_RFID_EMULATE_TIMER);
diff --git a/firmware/targets/f7/furi_hal/furi_hal_speaker.c b/firmware/targets/f7/furi_hal/furi_hal_speaker.c
index 00186198..03a7f094 100644
--- a/firmware/targets/f7/furi_hal/furi_hal_speaker.c
+++ b/firmware/targets/f7/furi_hal/furi_hal_speaker.c
@@ -20,15 +20,7 @@ void furi_hal_speaker_init() {
         &gpio_speaker, GpioModeAltFunctionPushPull, GpioPullNo, GpioSpeedLow, GpioAltFn14TIM16);
 }
 
-void furi_hal_speaker_start(float frequency, float volume) {
-    if(volume == 0) {
-        return;
-    }
-
-    if(volume < 0) volume = 0;
-    if(volume > 1) volume = 1;
-    volume = volume * volume * volume;
-
+static inline uint32_t furi_hal_speaker_calculate_autoreload(float frequency) {
     uint32_t autoreload = (SystemCoreClock / FURI_HAL_SPEAKER_PRESCALER / frequency) - 1;
     if(autoreload < 2) {
         autoreload = 2;
@@ -36,35 +28,65 @@ void furi_hal_speaker_start(float frequency, float volume) {
         autoreload = UINT16_MAX;
     }
 
-    LL_TIM_InitTypeDef TIM_InitStruct = {0};
-    TIM_InitStruct.Prescaler = FURI_HAL_SPEAKER_PRESCALER - 1;
-    TIM_InitStruct.Autoreload = autoreload;
-    LL_TIM_Init(FURI_HAL_SPEAKER_TIMER, &TIM_InitStruct);
+    return autoreload;
+}
+
+static inline uint32_t furi_hal_speaker_calculate_compare(float volume) {
+    if(volume < 0) volume = 0;
+    if(volume > 1) volume = 1;
+    volume = volume * volume * volume;
 
 #ifdef FURI_HAL_SPEAKER_NEW_VOLUME
     uint32_t compare_value = volume * FURI_HAL_SPEAKER_MAX_VOLUME;
-    uint32_t clip_value = volume * TIM_InitStruct.Autoreload / 2;
+    uint32_t clip_value = volume * LL_TIM_GetAutoReload(FURI_HAL_SPEAKER_TIMER) / 2;
     if(compare_value > clip_value) {
         compare_value = clip_value;
     }
 #else
-    uint32_t compare_value = volume * autoreload / 2;
+    uint32_t compare_value = volume * LL_TIM_GetAutoReload(FURI_HAL_SPEAKER_TIMER) / 2;
 #endif
 
     if(compare_value == 0) {
         compare_value = 1;
     }
 
+    return compare_value;
+}
+
+void furi_hal_speaker_start(float frequency, float volume) {
+    if(volume <= 0) {
+        furi_hal_speaker_stop();
+        return;
+    }
+
+    LL_TIM_InitTypeDef TIM_InitStruct = {0};
+    TIM_InitStruct.Prescaler = FURI_HAL_SPEAKER_PRESCALER - 1;
+    TIM_InitStruct.Autoreload = furi_hal_speaker_calculate_autoreload(frequency);
+    LL_TIM_Init(FURI_HAL_SPEAKER_TIMER, &TIM_InitStruct);
+
     LL_TIM_OC_InitTypeDef TIM_OC_InitStruct = {0};
     TIM_OC_InitStruct.OCMode = LL_TIM_OCMODE_PWM1;
     TIM_OC_InitStruct.OCState = LL_TIM_OCSTATE_ENABLE;
-    TIM_OC_InitStruct.CompareValue = compare_value;
+    TIM_OC_InitStruct.CompareValue = furi_hal_speaker_calculate_compare(volume);
     LL_TIM_OC_Init(FURI_HAL_SPEAKER_TIMER, FURI_HAL_SPEAKER_CHANNEL, &TIM_OC_InitStruct);
 
     LL_TIM_EnableAllOutputs(FURI_HAL_SPEAKER_TIMER);
     LL_TIM_EnableCounter(FURI_HAL_SPEAKER_TIMER);
 }
 
+void furi_hal_speaker_set_volume(float volume) {
+    if(volume <= 0) {
+        furi_hal_speaker_stop();
+        return;
+    }
+
+#if FURI_HAL_SPEAKER_CHANNEL == LL_TIM_CHANNEL_CH1
+    LL_TIM_OC_SetCompareCH1(FURI_HAL_SPEAKER_TIMER, furi_hal_speaker_calculate_compare(volume));
+#else
+#error Invalid channel
+#endif
+}
+
 void furi_hal_speaker_stop() {
     LL_TIM_DisableAllOutputs(FURI_HAL_SPEAKER_TIMER);
     LL_TIM_DisableCounter(FURI_HAL_SPEAKER_TIMER);
diff --git a/firmware/targets/f7/furi_hal/furi_hal_spi.c b/firmware/targets/f7/furi_hal/furi_hal_spi.c
index 01cb3ae6..f8c5a2c7 100644
--- a/firmware/targets/f7/furi_hal/furi_hal_spi.c
+++ b/firmware/targets/f7/furi_hal/furi_hal_spi.c
@@ -83,6 +83,7 @@ void furi_hal_spi_release(FuriHalSpiBusHandle* handle) {
 }
 
 static void furi_hal_spi_bus_end_txrx(FuriHalSpiBusHandle* handle, uint32_t timeout) {
+    UNUSED(timeout); // FIXME
     while(LL_SPI_GetTxFIFOLevel(handle->bus->spi) != LL_SPI_TX_FIFO_EMPTY)
         ;
     while(LL_SPI_IsActiveFlag_BSY(handle->bus->spi))
diff --git a/firmware/targets/f7/furi_hal/furi_hal_spi_config.h b/firmware/targets/f7/furi_hal/furi_hal_spi_config.h
index 3e4296a0..eab633a1 100644
--- a/firmware/targets/f7/furi_hal/furi_hal_spi_config.h
+++ b/firmware/targets/f7/furi_hal/furi_hal_spi_config.h
@@ -58,4 +58,4 @@ extern FuriHalSpiBusHandle furi_hal_spi_bus_handle_sd_slow;
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/firmware/targets/f7/furi_hal/furi_hal_spi_types.h b/firmware/targets/f7/furi_hal/furi_hal_spi_types.h
index 1fb1c02b..d2273f38 100644
--- a/firmware/targets/f7/furi_hal/furi_hal_spi_types.h
+++ b/firmware/targets/f7/furi_hal/furi_hal_spi_types.h
@@ -61,4 +61,4 @@ struct FuriHalSpiBusHandle {
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/firmware/targets/f7/furi_hal/furi_hal_subghz.c b/firmware/targets/f7/furi_hal/furi_hal_subghz.c
index 956342ff..7f40a152 100644
--- a/firmware/targets/f7/furi_hal/furi_hal_subghz.c
+++ b/firmware/targets/f7/furi_hal/furi_hal_subghz.c
@@ -799,6 +799,9 @@ static void furi_hal_subghz_async_tx_refill(uint32_t* buffer, size_t samples) {
                 } else {
                     furi_hal_subghz_async_tx.duty_low += API_HAL_SUBGHZ_ASYNC_TX_GUARD_TIME;
                 }
+                // This code must be invoked only once: when encoder starts with low level.
+                // Otherwise whole thing will crash.
+                furi_check(samples > 0);
             }
 
             uint32_t duration = level_duration_get_duration(ld);
@@ -969,9 +972,9 @@ void furi_hal_subghz_stop_async_tx() {
     FURI_LOG_D(
         TAG,
         "Async TX Radio stats: on %0.0fus, off %0.0fus, DutyCycle: %0.0f%%",
-        (float)furi_hal_subghz_async_tx.duty_high,
-        (float)furi_hal_subghz_async_tx.duty_low,
-        duty_cycle);
+        (double)furi_hal_subghz_async_tx.duty_high,
+        (double)furi_hal_subghz_async_tx.duty_low,
+        (double)duty_cycle);
 
     furi_hal_subghz_state = SubGhzStateIdle;
 }
diff --git a/firmware/targets/f7/furi_hal/furi_hal_usb.c b/firmware/targets/f7/furi_hal/furi_hal_usb.c
index d41414f8..6a5e534e 100644
--- a/firmware/targets/f7/furi_hal/furi_hal_usb.c
+++ b/firmware/targets/f7/furi_hal/furi_hal_usb.c
@@ -189,6 +189,9 @@ void furi_hal_usb_set_state_callback(FuriHalUsbStateCallback cb, void* ctx) {
 }
 
 static void reset_evt(usbd_device* dev, uint8_t event, uint8_t ep) {
+    UNUSED(dev);
+    UNUSED(event);
+    UNUSED(ep);
     osThreadFlagsSet(furi_thread_get_thread_id(usb.thread), EventReset);
     if(usb.callback != NULL) {
         usb.callback(FuriHalUsbStateEventReset, usb.cb_ctx);
@@ -196,6 +199,9 @@ static void reset_evt(usbd_device* dev, uint8_t event, uint8_t ep) {
 }
 
 static void susp_evt(usbd_device* dev, uint8_t event, uint8_t ep) {
+    UNUSED(dev);
+    UNUSED(event);
+    UNUSED(ep);
     if((usb.if_cur != NULL) && (usb.connected == true)) {
         usb.connected = false;
         usb.if_cur->suspend(&udev);
@@ -208,6 +214,9 @@ static void susp_evt(usbd_device* dev, uint8_t event, uint8_t ep) {
 }
 
 static void wkup_evt(usbd_device* dev, uint8_t event, uint8_t ep) {
+    UNUSED(dev);
+    UNUSED(event);
+    UNUSED(ep);
     if((usb.if_cur != NULL) && (usb.connected == false)) {
         usb.connected = true;
         usb.if_cur->wakeup(&udev);
@@ -220,6 +229,7 @@ static void wkup_evt(usbd_device* dev, uint8_t event, uint8_t ep) {
 }
 
 static int32_t furi_hal_usb_thread(void* context) {
+    UNUSED(context);
     bool usb_request_pending = false;
     uint8_t usb_wait_time = 0;
     FuriHalUsbInterface* if_new = NULL;
diff --git a/firmware/targets/f7/furi_hal/furi_hal_usb_cdc.c b/firmware/targets/f7/furi_hal/furi_hal_usb_cdc.c
index 807f1634..69a7fb3c 100644
--- a/firmware/targets/f7/furi_hal/furi_hal_usb_cdc.c
+++ b/firmware/targets/f7/furi_hal/furi_hal_usb_cdc.c
@@ -429,6 +429,7 @@ FuriHalUsbInterface usb_cdc_dual = {
 };
 
 static void cdc_init(usbd_device* dev, FuriHalUsbInterface* intf, void* ctx) {
+    UNUSED(ctx);
     usb_dev = dev;
     cdc_if_cur = intf;
 
@@ -515,6 +516,7 @@ int32_t furi_hal_cdc_receive(uint8_t if_num, uint8_t* buf, uint16_t max_len) {
 }
 
 static void cdc_on_wakeup(usbd_device* dev) {
+    UNUSED(dev);
     connected = true;
     for(uint8_t i = 0; i < IF_NUM_MAX; i++) {
         if(callbacks[i] != NULL) {
@@ -524,6 +526,7 @@ static void cdc_on_wakeup(usbd_device* dev) {
 }
 
 static void cdc_on_suspend(usbd_device* dev) {
+    UNUSED(dev);
     connected = false;
     for(uint8_t i = 0; i < IF_NUM_MAX; i++) {
         cdc_ctrl_line_state[i] = 0;
@@ -534,6 +537,8 @@ static void cdc_on_suspend(usbd_device* dev) {
 }
 
 static void cdc_rx_ep_callback(usbd_device* dev, uint8_t event, uint8_t ep) {
+    UNUSED(dev);
+    UNUSED(event);
     uint8_t if_num = 0;
     if(ep == CDC0_RXD_EP)
         if_num = 0;
@@ -547,6 +552,8 @@ static void cdc_rx_ep_callback(usbd_device* dev, uint8_t event, uint8_t ep) {
 }
 
 static void cdc_tx_ep_callback(usbd_device* dev, uint8_t event, uint8_t ep) {
+    UNUSED(dev);
+    UNUSED(event);
     uint8_t if_num = 0;
     if(ep == CDC0_TXD_EP)
         if_num = 0;
@@ -629,6 +636,7 @@ static usbd_respond cdc_ep_config(usbd_device* dev, uint8_t cfg) {
 
 /* Control requests handler */
 static usbd_respond cdc_control(usbd_device* dev, usbd_ctlreq* req, usbd_rqc_callback* callback) {
+    UNUSED(callback);
     /* CDC control requests */
     uint8_t if_num = 0;
     if(((USB_REQ_RECIPIENT | USB_REQ_TYPE) & req->bmRequestType) ==
diff --git a/firmware/targets/f7/furi_hal/furi_hal_usb_hid.c b/firmware/targets/f7/furi_hal/furi_hal_usb_hid.c
index 55825dd9..aae4dd4f 100644
--- a/firmware/targets/f7/furi_hal/furi_hal_usb_hid.c
+++ b/firmware/targets/f7/furi_hal/furi_hal_usb_hid.c
@@ -375,6 +375,7 @@ static void* hid_set_string_descr(char* str) {
 }
 
 static void hid_init(usbd_device* dev, FuriHalUsbInterface* intf, void* ctx) {
+    UNUSED(intf);
     FuriHalUsbHidConfig* cfg = (FuriHalUsbHidConfig*)ctx;
     if(hid_semaphore == NULL) hid_semaphore = osSemaphoreNew(1, 1, NULL);
     usb_dev = dev;
@@ -419,17 +420,23 @@ static void hid_deinit(usbd_device* dev) {
 }
 
 static void hid_on_wakeup(usbd_device* dev) {
-    if(hid_connected == false) {
+    UNUSED(dev);
+    if(!hid_connected) {
         hid_connected = true;
-        if(callback != NULL) callback(true, cb_ctx);
+        if(callback != NULL) {
+            callback(true, cb_ctx);
+        }
     }
 }
 
 static void hid_on_suspend(usbd_device* dev) {
-    if(hid_connected == true) {
+    UNUSED(dev);
+    if(hid_connected) {
         hid_connected = false;
         osSemaphoreRelease(hid_semaphore);
-        if(callback != NULL) callback(false, cb_ctx);
+        if(callback != NULL) {
+            callback(false, cb_ctx);
+        }
     }
 }
 
@@ -450,6 +457,7 @@ static bool hid_send_report(uint8_t report_id) {
 }
 
 static void hid_txrx_ep_callback(usbd_device* dev, uint8_t event, uint8_t ep) {
+    UNUSED(dev);
     if(event == usbd_evt_eptx) {
         osSemaphoreRelease(hid_semaphore);
     } else {
@@ -484,6 +492,7 @@ static usbd_respond hid_ep_config(usbd_device* dev, uint8_t cfg) {
 
 /* Control requests handler */
 static usbd_respond hid_control(usbd_device* dev, usbd_ctlreq* req, usbd_rqc_callback* callback) {
+    UNUSED(callback);
     /* HID control requests */
     if(((USB_REQ_RECIPIENT | USB_REQ_TYPE) & req->bmRequestType) ==
            (USB_REQ_INTERFACE | USB_REQ_CLASS) &&
diff --git a/firmware/targets/f7/furi_hal/furi_hal_usb_u2f.c b/firmware/targets/f7/furi_hal/furi_hal_usb_u2f.c
index 37d879ed..a8041086 100644
--- a/firmware/targets/f7/furi_hal/furi_hal_usb_u2f.c
+++ b/firmware/targets/f7/furi_hal/furi_hal_usb_u2f.c
@@ -159,14 +159,18 @@ bool furi_hal_hid_u2f_is_connected() {
 
 void furi_hal_hid_u2f_set_callback(HidU2fCallback cb, void* ctx) {
     if(callback != NULL) {
-        if(hid_u2f_connected == true) callback(HidU2fDisconnected, cb_ctx);
+        if(hid_u2f_connected == true) {
+            callback(HidU2fDisconnected, cb_ctx);
+        }
     }
 
     callback = cb;
     cb_ctx = ctx;
 
     if(callback != NULL) {
-        if(hid_u2f_connected == true) callback(HidU2fConnected, cb_ctx);
+        if(hid_u2f_connected == true) {
+            callback(HidU2fConnected, cb_ctx);
+        }
     }
 }
 
@@ -186,7 +190,11 @@ FuriHalUsbInterface usb_hid_u2f = {
 };
 
 static void hid_u2f_init(usbd_device* dev, FuriHalUsbInterface* intf, void* ctx) {
-    if(hid_u2f_semaphore == NULL) hid_u2f_semaphore = osSemaphoreNew(1, 1, NULL);
+    UNUSED(intf);
+    UNUSED(ctx);
+    if(hid_u2f_semaphore == NULL) {
+        hid_u2f_semaphore = osSemaphoreNew(1, 1, NULL);
+    }
     usb_dev = dev;
 
     usbd_reg_config(dev, hid_u2f_ep_config);
@@ -201,15 +209,21 @@ static void hid_u2f_deinit(usbd_device* dev) {
 }
 
 static void hid_u2f_on_wakeup(usbd_device* dev) {
+    UNUSED(dev);
     hid_u2f_connected = true;
-    if(callback != NULL) callback(HidU2fConnected, cb_ctx);
+    if(callback != NULL) {
+        callback(HidU2fConnected, cb_ctx);
+    }
 }
 
 static void hid_u2f_on_suspend(usbd_device* dev) {
-    if(hid_u2f_connected == true) {
+    UNUSED(dev);
+    if(hid_u2f_connected) {
         hid_u2f_connected = false;
         osSemaphoreRelease(hid_u2f_semaphore);
-        if(callback != NULL) callback(HidU2fDisconnected, cb_ctx);
+        if(callback != NULL) {
+            callback(HidU2fDisconnected, cb_ctx);
+        }
     }
 }
 
@@ -227,10 +241,18 @@ uint32_t furi_hal_hid_u2f_get_request(uint8_t* data) {
 }
 
 static void hid_u2f_rx_ep_callback(usbd_device* dev, uint8_t event, uint8_t ep) {
-    if(callback != NULL) callback(HidU2fRequest, cb_ctx);
+    UNUSED(dev);
+    UNUSED(event);
+    UNUSED(ep);
+    if(callback != NULL) {
+        callback(HidU2fRequest, cb_ctx);
+    }
 }
 
 static void hid_u2f_tx_ep_callback(usbd_device* dev, uint8_t event, uint8_t ep) {
+    UNUSED(dev);
+    UNUSED(event);
+    UNUSED(ep);
     osSemaphoreRelease(hid_u2f_semaphore);
 }
 
@@ -268,6 +290,7 @@ static usbd_respond hid_u2f_ep_config(usbd_device* dev, uint8_t cfg) {
 /* Control requests handler */
 static usbd_respond
     hid_u2f_control(usbd_device* dev, usbd_ctlreq* req, usbd_rqc_callback* callback) {
+    UNUSED(callback);
     /* HID control requests */
     if(((USB_REQ_RECIPIENT | USB_REQ_TYPE) & req->bmRequestType) ==
            (USB_REQ_INTERFACE | USB_REQ_CLASS) &&
diff --git a/firmware/targets/f7/furi_hal/furi_hal_version.c b/firmware/targets/f7/furi_hal/furi_hal_version.c
index e580c978..7abee281 100644
--- a/firmware/targets/f7/furi_hal/furi_hal_version.c
+++ b/firmware/targets/f7/furi_hal/furi_hal_version.c
@@ -205,7 +205,7 @@ const char* furi_hal_version_get_model_name() {
     return "Flipper Zero";
 }
 
-const FuriHalVersionOtpVersion furi_hal_version_get_otp_version() {
+FuriHalVersionOtpVersion furi_hal_version_get_otp_version() {
     if(*(uint64_t*)FURI_HAL_VERSION_OTP_ADDRESS == 0xFFFFFFFF) {
         return FuriHalVersionOtpVersionEmpty;
     } else {
@@ -228,27 +228,27 @@ const FuriHalVersionOtpVersion furi_hal_version_get_otp_version() {
     }
 }
 
-const uint8_t furi_hal_version_get_hw_version() {
+uint8_t furi_hal_version_get_hw_version() {
     return furi_hal_version.board_version;
 }
 
-const uint8_t furi_hal_version_get_hw_target() {
+uint8_t furi_hal_version_get_hw_target() {
     return furi_hal_version.board_target;
 }
 
-const uint8_t furi_hal_version_get_hw_body() {
+uint8_t furi_hal_version_get_hw_body() {
     return furi_hal_version.board_body;
 }
 
-const FuriHalVersionColor furi_hal_version_get_hw_color() {
+FuriHalVersionColor furi_hal_version_get_hw_color() {
     return furi_hal_version.board_color;
 }
 
-const uint8_t furi_hal_version_get_hw_connect() {
+uint8_t furi_hal_version_get_hw_connect() {
     return furi_hal_version.board_connect;
 }
 
-const FuriHalVersionRegion furi_hal_version_get_hw_region() {
+FuriHalVersionRegion furi_hal_version_get_hw_region() {
     return furi_hal_version.board_region;
 }
 
@@ -266,11 +266,11 @@ const char* furi_hal_version_get_hw_region_name() {
     return "R??";
 }
 
-const FuriHalVersionDisplay furi_hal_version_get_hw_display() {
+FuriHalVersionDisplay furi_hal_version_get_hw_display() {
     return furi_hal_version.board_display;
 }
 
-const uint32_t furi_hal_version_get_hw_timestamp() {
+uint32_t furi_hal_version_get_hw_timestamp() {
     return furi_hal_version.timestamp;
 }
 
diff --git a/firmware/targets/f7/stm32wb55xx_flash.ld b/firmware/targets/f7/stm32wb55xx_flash.ld
index f742ecc1..1d0e916b 100644
--- a/firmware/targets/f7/stm32wb55xx_flash.ld
+++ b/firmware/targets/f7/stm32wb55xx_flash.ld
@@ -135,6 +135,7 @@ SECTIONS
     _sdata = .;        /* create a global symbol at data start */
     *(.data)           /* .data sections */
     *(.data*)          /* .data* sections */
+    *(*_DRIVER_CONTEXT)
 
     . = ALIGN(4);
     _edata = .;        /* define a global symbol at data end */
@@ -158,7 +159,7 @@ SECTIONS
   } >RAM1
 
   /* User_heap_stack section, used to check that there is enough RAM left */
-  ._user_heap_stack :
+  ._user_heap_stack(NOLOAD):
   {
     . = ALIGN(8);
     __heap_start__ = .;
@@ -173,7 +174,7 @@ SECTIONS
   {
     __free_flash_start__ = .;
     . = ORIGIN(FLASH) + LENGTH(FLASH);
-  } >FLASH
+  } >FLASH 
 
   /* Remove information from the standard libraries */
   /DISCARD/ :
diff --git a/firmware/targets/f7/target.mk b/firmware/targets/f7/target.mk
index 6410ba13..8e58a71c 100644
--- a/firmware/targets/f7/target.mk
+++ b/firmware/targets/f7/target.mk
@@ -18,7 +18,10 @@ endif
 
 MCU_FLAGS		= -mcpu=cortex-m4 -mthumb -mfpu=fpv4-sp-d16 -mfloat-abi=hard
 
-CFLAGS			+= $(MCU_FLAGS) -DSTM32WB55xx -Wall -fdata-sections -ffunction-sections
+# Warnings configuration
+CFLAGS			+= -Wall -Wextra -Wredundant-decls -Wdouble-promotion
+
+CFLAGS			+= $(MCU_FLAGS) -DSTM32WB55xx -fdata-sections -ffunction-sections -fsingle-precision-constant
 LDFLAGS			+= $(MCU_FLAGS) -specs=nosys.specs -specs=nano.specs
 
 CPPFLAGS		+= -fno-rtti -fno-use-cxa-atexit -fno-exceptions
@@ -35,6 +38,7 @@ ASM_SOURCES += $(MXPROJECT_DIR)/startup_stm32wb55xx_cm4.s
 CUBE_DIR = ../lib/STM32CubeWB
 CFLAGS += \
 	-DUSE_FULL_LL_DRIVER \
+	-DUSE_FULL_ASSERT \
 	-DHAVE_FREERTOS
 CFLAGS += \
 	-I$(CUBE_DIR)/Drivers/STM32WBxx_HAL_Driver/Inc \
diff --git a/firmware/targets/furi_hal_include/furi_hal_random.h b/firmware/targets/furi_hal_include/furi_hal_random.h
index fa549d23..ee69326f 100644
--- a/firmware/targets/furi_hal_include/furi_hal_random.h
+++ b/firmware/targets/furi_hal_include/furi_hal_random.h
@@ -21,4 +21,4 @@ void furi_hal_random_fill_buf(uint8_t* buf, uint32_t len);
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/firmware/targets/furi_hal_include/furi_hal_sd.h b/firmware/targets/furi_hal_include/furi_hal_sd.h
index 307a8721..e1c08a35 100644
--- a/firmware/targets/furi_hal_include/furi_hal_sd.h
+++ b/firmware/targets/furi_hal_include/furi_hal_sd.h
@@ -1,3 +1,4 @@
+#pragma once
 /**
  * @file furi_hal_sd.h
  * SD Card HAL API
diff --git a/firmware/targets/furi_hal_include/furi_hal_speaker.h b/firmware/targets/furi_hal_include/furi_hal_speaker.h
index 35c89fb6..67de41d9 100644
--- a/firmware/targets/furi_hal_include/furi_hal_speaker.h
+++ b/firmware/targets/furi_hal_include/furi_hal_speaker.h
@@ -12,6 +12,8 @@ void furi_hal_speaker_init();
 
 void furi_hal_speaker_start(float frequency, float volume);
 
+void furi_hal_speaker_set_volume(float volume);
+
 void furi_hal_speaker_stop();
 
 #ifdef __cplusplus
diff --git a/firmware/targets/furi_hal_include/furi_hal_usb_hid.h b/firmware/targets/furi_hal_include/furi_hal_usb_hid.h
index 4819e82e..20c76223 100644
--- a/firmware/targets/furi_hal_include/furi_hal_usb_hid.h
+++ b/firmware/targets/furi_hal_include/furi_hal_usb_hid.h
@@ -347,4 +347,4 @@ bool furi_hal_hid_consumer_key_press(uint16_t button);
  *
  * @param      button  key code
  */
-bool furi_hal_hid_consumer_key_release(uint16_t button);
\ No newline at end of file
+bool furi_hal_hid_consumer_key_release(uint16_t button);
diff --git a/lib/ST25RFAL002/platform.c b/lib/ST25RFAL002/platform.c
index 2c624f6e..52ac843e 100644
--- a/lib/ST25RFAL002/platform.c
+++ b/lib/ST25RFAL002/platform.c
@@ -14,6 +14,7 @@ static volatile PlatformIrqCallback platform_irq_callback = NULL;
 static const GpioPin pin = {ST25R_INT_PORT, ST25R_INT_PIN};
 
 void nfc_isr(void* _ctx) {
+    UNUSED(_ctx);
     if(platform_irq_callback && platformGpioIsHigh(ST25R_INT_PORT, ST25R_INT_PIN)) {
         osThreadFlagsSet(platform_irq_thread_id, 0x1);
     }
diff --git a/lib/ST25RFAL002/source/rfal_t4t.c b/lib/ST25RFAL002/source/rfal_t4t.c
index bcc5b8de..8592daf8 100644
--- a/lib/ST25RFAL002/source/rfal_t4t.c
+++ b/lib/ST25RFAL002/source/rfal_t4t.c
@@ -118,6 +118,7 @@ ReturnCode rfalT4TPollerComposeCAPDU(const rfalT4tCApduParam* apduParam) {
         }
 
         /* Check whether requested Lc fits */
+#pragma GCC diagnostic ignored "-Wtype-limits"
         if((uint16_t)apduParam->Lc >
            (uint16_t)(RFAL_FEATURE_ISO_DEP_APDU_MAX_LEN - RFAL_T4T_LE_LEN)) {
             return ERR_PARAM; /*  PRQA S  2880 # MISRA 2.1 - Unreachable code due to configuration option being set/unset  */
diff --git a/lib/ST25RFAL002/source/st25r3916/st25r3916_com.c b/lib/ST25RFAL002/source/st25r3916/st25r3916_com.c
index 71ded38f..40d65807 100644
--- a/lib/ST25RFAL002/source/st25r3916/st25r3916_com.c
+++ b/lib/ST25RFAL002/source/st25r3916/st25r3916_com.c
@@ -609,7 +609,8 @@ bool st25r3916CheckReg(uint8_t reg, uint8_t mask, uint8_t val) {
 
 /*******************************************************************************/
 bool st25r3916IsRegValid(uint8_t reg) {
-    if(!(((int16_t)reg >= (int16_t)ST25R3916_REG_IO_CONF1) &&
+#pragma GCC diagnostic ignored "-Wtype-limits"
+    if(!(((int16_t)reg >= (int32_t)ST25R3916_REG_IO_CONF1) &&
          (reg <= (ST25R3916_SPACE_B | ST25R3916_REG_IC_IDENTITY)))) {
         return false;
     }
diff --git a/lib/ST25RFAL002/timer.h b/lib/ST25RFAL002/timer.h
index c6719410..b5f5eb32 100644
--- a/lib/ST25RFAL002/timer.h
+++ b/lib/ST25RFAL002/timer.h
@@ -1,3 +1,4 @@
+#pragma once
 /******************************************************************************
   * @attention
   *
@@ -38,7 +39,8 @@
 * INCLUDES
 ******************************************************************************
 */
-#include "platform.h"
+#include <stdint.h>
+#include <stdbool.h>
 
 /*
 ******************************************************************************
diff --git a/lib/app-scened-template/file_worker.c b/lib/app-scened-template/file_worker.c
index f32d10d7..3a742ff9 100644
--- a/lib/app-scened-template/file_worker.c
+++ b/lib/app-scened-template/file_worker.c
@@ -232,6 +232,7 @@ bool file_worker_write_hex(FileWorker* file_worker, const uint8_t* buffer, uint1
 }
 
 void file_worker_show_error(FileWorker* file_worker, const char* error_text) {
+    UNUSED(file_worker);
     DialogsApp* dialogs = furi_record_open("dialogs");
 
     DialogMessage* message = dialog_message_alloc();
@@ -251,6 +252,7 @@ bool file_worker_file_select(
     char* result,
     uint8_t result_size,
     const char* selected_filename) {
+    UNUSED(file_worker);
     DialogsApp* dialogs = furi_record_open("dialogs");
     bool ret =
         dialog_file_select_show(dialogs, path, extension, result, result_size, selected_filename);
@@ -259,6 +261,7 @@ bool file_worker_file_select(
 }
 
 bool file_worker_check_common_errors(FileWorker* file_worker) {
+    UNUSED(file_worker);
     //TODO remove
     /* TODO: [FL-1431] Add return value to file_parser.get_sd_api().check_error() and replace get_fs_info(). */
     return true;
diff --git a/lib/app-scened-template/generic_scene.hpp b/lib/app-scened-template/generic_scene.hpp
index c9e823b2..979e9747 100644
--- a/lib/app-scened-template/generic_scene.hpp
+++ b/lib/app-scened-template/generic_scene.hpp
@@ -6,4 +6,4 @@ public:
     virtual ~GenericScene(){};
 
 private:
-};
\ No newline at end of file
+};
diff --git a/lib/app-scened-template/record_controller.hpp b/lib/app-scened-template/record_controller.hpp
index af8db58c..9dfa9657 100644
--- a/lib/app-scened-template/record_controller.hpp
+++ b/lib/app-scened-template/record_controller.hpp
@@ -43,4 +43,4 @@ public:
 private:
     const char* name;
     TRecordClass* value;
-};
\ No newline at end of file
+};
diff --git a/lib/app-scened-template/scene_controller.hpp b/lib/app-scened-template/scene_controller.hpp
index 7e4c5ec0..678f6c0d 100644
--- a/lib/app-scened-template/scene_controller.hpp
+++ b/lib/app-scened-template/scene_controller.hpp
@@ -141,7 +141,7 @@ public:
      * @param tick_length_ms tick event length in milliseconds
      */
     void process(
-        uint32_t tick_length_ms = 100,
+        uint32_t /* tick_length_ms */ = 100,
         typename TApp::SceneType start_scene_index = TApp::SceneType::Start) {
         typename TApp::Event event;
         bool consumed;
@@ -240,4 +240,4 @@ private:
 
         return scene_index;
     }
-};
\ No newline at end of file
+};
diff --git a/lib/app-scened-template/text_store.h b/lib/app-scened-template/text_store.h
index 95329f6d..a01784fd 100644
--- a/lib/app-scened-template/text_store.h
+++ b/lib/app-scened-template/text_store.h
@@ -9,4 +9,4 @@ public:
     void set(const char* text...);
     const uint8_t text_size;
     char* text;
-};
\ No newline at end of file
+};
diff --git a/lib/app-scened-template/typeindex_no_rtti.hpp b/lib/app-scened-template/typeindex_no_rtti.hpp
index be350cc9..4ac52725 100644
--- a/lib/app-scened-template/typeindex_no_rtti.hpp
+++ b/lib/app-scened-template/typeindex_no_rtti.hpp
@@ -118,4 +118,4 @@ template <> struct std::hash<ext::type_index> {
     result_type operator()(argument_type const& t) const noexcept {
         return t.hash_code();
     }
-};
\ No newline at end of file
+};
diff --git a/lib/app-scened-template/view_modules/byte_input_vm.h b/lib/app-scened-template/view_modules/byte_input_vm.h
index 8217b213..9a161012 100644
--- a/lib/app-scened-template/view_modules/byte_input_vm.h
+++ b/lib/app-scened-template/view_modules/byte_input_vm.h
@@ -34,4 +34,4 @@ public:
 
 private:
     ByteInput* byte_input;
-};
\ No newline at end of file
+};
diff --git a/lib/app-scened-template/view_modules/dialog_ex_vm.h b/lib/app-scened-template/view_modules/dialog_ex_vm.h
index 5c3cf124..66c2b760 100644
--- a/lib/app-scened-template/view_modules/dialog_ex_vm.h
+++ b/lib/app-scened-template/view_modules/dialog_ex_vm.h
@@ -70,4 +70,4 @@ public:
 
 private:
     DialogEx* dialog_ex;
-};
\ No newline at end of file
+};
diff --git a/lib/app-scened-template/view_modules/generic_view_module.h b/lib/app-scened-template/view_modules/generic_view_module.h
index 10f04dc3..8b74ea3a 100644
--- a/lib/app-scened-template/view_modules/generic_view_module.h
+++ b/lib/app-scened-template/view_modules/generic_view_module.h
@@ -7,4 +7,4 @@ public:
     virtual ~GenericViewModule(){};
     virtual View* get_view() = 0;
     virtual void clean() = 0;
-};
\ No newline at end of file
+};
diff --git a/lib/app-scened-template/view_modules/popup_vm.h b/lib/app-scened-template/view_modules/popup_vm.h
index 483f33a2..26650563 100644
--- a/lib/app-scened-template/view_modules/popup_vm.h
+++ b/lib/app-scened-template/view_modules/popup_vm.h
@@ -65,4 +65,4 @@ public:
 
 private:
     Popup* popup;
-};
\ No newline at end of file
+};
diff --git a/lib/app-scened-template/view_modules/submenu_vm.h b/lib/app-scened-template/view_modules/submenu_vm.h
index 6dba936f..06541527 100644
--- a/lib/app-scened-template/view_modules/submenu_vm.h
+++ b/lib/app-scened-template/view_modules/submenu_vm.h
@@ -39,4 +39,4 @@ public:
 
 private:
     Submenu* submenu;
-};
\ No newline at end of file
+};
diff --git a/lib/app-scened-template/view_modules/text_input_vm.h b/lib/app-scened-template/view_modules/text_input_vm.h
index 8fafe861..81799e48 100644
--- a/lib/app-scened-template/view_modules/text_input_vm.h
+++ b/lib/app-scened-template/view_modules/text_input_vm.h
@@ -38,4 +38,4 @@ public:
 
 private:
     TextInput* text_input;
-};
\ No newline at end of file
+};
diff --git a/lib/app-template/app_template.h b/lib/app-template/app_template.h
index 3af491ef..7adcf2bf 100644
--- a/lib/app-template/app_template.h
+++ b/lib/app-template/app_template.h
@@ -110,4 +110,4 @@ template <class TState, class TEvent> uint8_t AppTemplate<TState, TEvent>::exit(
 
 template <class TState, class TEvent> void AppTemplate<TState, TEvent>::update_gui(void) {
     view_port_update(view_port);
-}
\ No newline at end of file
+}
diff --git a/lib/callback-connector/callback-connector.h b/lib/callback-connector/callback-connector.h
index e98ee914..10fec3e2 100644
--- a/lib/callback-connector/callback-connector.h
+++ b/lib/callback-connector/callback-connector.h
@@ -96,4 +96,4 @@ template <typename Functor> auto obtain_connector(Functor functor) {
 }
 } //end of cbc scope
 
-#endif // CALLBACKCONNECTOR_H
\ No newline at end of file
+#endif // CALLBACKCONNECTOR_H
diff --git a/lib/drivers/bq27220.c b/lib/drivers/bq27220.c
index bf654b5d..18f3f028 100644
--- a/lib/drivers/bq27220.c
+++ b/lib/drivers/bq27220.c
@@ -47,7 +47,7 @@ bool bq27220_set_parameter_u16(FuriHalI2cBusHandle* handle, uint16_t address, ui
     uint8_t checksum = bq27220_get_checksum(buffer, 4);
     buffer[0] = checksum;
     buffer[1] = 6;
-    ret = furi_hal_i2c_write_mem(
+    ret &= furi_hal_i2c_write_mem(
         handle, BQ27220_ADDRESS, CommandMACDataSum, buffer, 2, BQ27220_I2C_TIMEOUT);
 
     furi_hal_delay_us(10000);
@@ -62,13 +62,13 @@ bool bq27220_init(FuriHalI2cBusHandle* handle, const ParamCEDV* cedv) {
         return true;
     }
     FURI_LOG_I(TAG, "Start updating battery profile");
-    OperationStatus status = {};
+    OperationStatus status = {0};
     if(!bq27220_control(handle, Control_ENTER_CFG_UPDATE)) {
         FURI_LOG_E(TAG, "Can't configure update");
         return false;
     };
 
-    while((status.CFGUPDATE != 1) && (timeout-- > 0)) {
+    while((status.CFGUPDATE != true) && (timeout-- > 0)) {
         bq27220_get_operation_status(handle, &status);
     }
     bq27220_set_parameter_u16(handle, AddressGaugingConfig, cedv->cedv_conf.gauge_conf_raw);
diff --git a/lib/drivers/cc1101.h b/lib/drivers/cc1101.h
index c35c823c..af1f1556 100644
--- a/lib/drivers/cc1101.h
+++ b/lib/drivers/cc1101.h
@@ -148,13 +148,6 @@ uint32_t cc1101_set_intermediate_frequency(FuriHalSpiBusHandle* handle, uint32_t
  */
 void cc1101_set_pa_table(FuriHalSpiBusHandle* handle, const uint8_t value[8]);
 
-/** Set Power Amplifier level table, ramp
- *
- * @param      handle  - pointer to FuriHalSpiHandle
- * @param      value   - array of power level values
- */
-void cc1101_set_pa_table(FuriHalSpiBusHandle* handle, const uint8_t value[8]);
-
 /** Write FIFO
  *
  * @param      handle  - pointer to FuriHalSpiHandle
@@ -177,4 +170,4 @@ uint8_t cc1101_read_fifo(FuriHalSpiBusHandle* handle, uint8_t* data, uint8_t* si
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/lib/drivers/cc1101_regs.h b/lib/drivers/cc1101_regs.h
index 30a680be..a326dc92 100644
--- a/lib/drivers/cc1101_regs.h
+++ b/lib/drivers/cc1101_regs.h
@@ -209,4 +209,4 @@ typedef struct {
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/lib/fatfs/ff.c b/lib/fatfs/ff.c
index b0bd4366..85ab9736 100644
--- a/lib/fatfs/ff.c
+++ b/lib/fatfs/ff.c
@@ -1059,7 +1059,7 @@ DWORD get_fat (	/* 0xFFFFFFFF:Disk error, 1:Internal error, 2..0x7FFFFFFF:Cluste
 					break;
 				}
 			}
-			/* go to default */
+			__attribute__ ((fallthrough));
 #endif
 		default:
 			val = 1;	/* Internal error */
@@ -5430,7 +5430,7 @@ FRESULT f_mkfs (
 					ch = 0xFFFF; st = 2; break;	/* Compress the no-case block if run is >= 128 */
 				}
 				st = 1;			/* Do not compress short run */
-				/* go to next case */
+				__attribute__ ((fallthrough));
 			case 1:
 				ch = si++;		/* Fill the short run */
 				if (--j == 0) st = 0;
diff --git a/lib/fatfs/ff_gen_drv.c b/lib/fatfs/ff_gen_drv.c
index ccd595bb..9fb51efa 100644
--- a/lib/fatfs/ff_gen_drv.c
+++ b/lib/fatfs/ff_gen_drv.c
@@ -79,6 +79,7 @@ uint8_t FATFS_LinkDriver(const Diskio_drvTypeDef *drv, char *path)
   */
 uint8_t FATFS_UnLinkDriverEx(char *path, uint8_t lun)
 {
+  (void)lun;
   uint8_t DiskNum = 0;
   uint8_t ret = 1;
 
diff --git a/lib/flipper_format/flipper_format.c b/lib/flipper_format/flipper_format.c
index 01f54632..cee76701 100644
--- a/lib/flipper_format/flipper_format.c
+++ b/lib/flipper_format/flipper_format.c
@@ -584,4 +584,4 @@ bool flipper_format_insert_or_update_hex(
     }
 
     return result;
-}
\ No newline at end of file
+}
diff --git a/lib/flipper_format/flipper_format.h b/lib/flipper_format/flipper_format.h
index 0f3c299d..49e3f936 100644
--- a/lib/flipper_format/flipper_format.h
+++ b/lib/flipper_format/flipper_format.h
@@ -622,4 +622,4 @@ bool flipper_format_insert_or_update_hex(
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/lib/flipper_format/flipper_format_i.h b/lib/flipper_format/flipper_format_i.h
index a47d4131..55b06f9f 100644
--- a/lib/flipper_format/flipper_format_i.h
+++ b/lib/flipper_format/flipper_format_i.h
@@ -16,4 +16,4 @@ Stream* flipper_format_get_raw_stream(FlipperFormat* flipper_format);
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/lib/flipper_format/flipper_format_stream.c b/lib/flipper_format/flipper_format_stream.c
index b3a08590..bd700849 100644
--- a/lib/flipper_format/flipper_format_stream.c
+++ b/lib/flipper_format/flipper_format_stream.c
@@ -276,7 +276,7 @@ bool flipper_format_stream_write_value_line(Stream* stream, FlipperStreamWriteDa
 #ifndef FLIPPER_STREAM_LITE
                 case FlipperStreamValueFloat: {
                     const float* data = write_data->data;
-                    string_printf(value, "%f", data[i]);
+                    string_printf(value, "%f", (double)data[i]);
                 }; break;
 #endif
                 case FlipperStreamValueInt32: {
@@ -295,7 +295,7 @@ bool flipper_format_stream_write_value_line(Stream* stream, FlipperStreamWriteDa
                     furi_crash("Unknown FF type");
                 }
 
-                if((i + 1) < write_data->data_size) {
+                if((size_t)(i + 1) < write_data->data_size) {
                     string_cat(value, " ");
                 }
 
@@ -340,7 +340,7 @@ bool flipper_format_stream_read_value_line(
             string_t value;
             string_init(value);
 
-            for(uint16_t i = 0; i < data_size; i++) {
+            for(size_t i = 0; i < data_size; i++) {
                 bool last = false;
                 result = flipper_format_stream_read_value(stream, value, &last);
                 if(result) {
@@ -507,4 +507,4 @@ bool flipper_format_stream_write_comment_cstr(Stream* stream, const char* data)
     } while(false);
 
     return result;
-}
\ No newline at end of file
+}
diff --git a/lib/flipper_format/flipper_format_stream.h b/lib/flipper_format/flipper_format_stream.h
index dc9fb5b3..6ac17322 100644
--- a/lib/flipper_format/flipper_format_stream.h
+++ b/lib/flipper_format/flipper_format_stream.h
@@ -92,4 +92,4 @@ bool flipper_format_stream_write_comment_cstr(Stream* stream, const char* data);
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/lib/flipper_format/flipper_format_stream_i.h b/lib/flipper_format/flipper_format_stream_i.h
index 74cf8f1a..f3614900 100644
--- a/lib/flipper_format/flipper_format_stream_i.h
+++ b/lib/flipper_format/flipper_format_stream_i.h
@@ -31,4 +31,4 @@ bool flipper_format_stream_seek_to_key(Stream* stream, const char* key, bool str
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/lib/fnv1a-hash/fnv1a-hash.c b/lib/fnv1a-hash/fnv1a-hash.c
index a5bfa206..69c675f3 100644
--- a/lib/fnv1a-hash/fnv1a-hash.c
+++ b/lib/fnv1a-hash/fnv1a-hash.c
@@ -7,4 +7,4 @@ uint32_t fnv1a_buffer_hash(const uint8_t* buffer, uint32_t length, uint32_t hash
         hash = (hash ^ buffer[i]) * 16777619ULL;
     }
     return hash;
-}
\ No newline at end of file
+}
diff --git a/lib/fnv1a-hash/fnv1a-hash.h b/lib/fnv1a-hash/fnv1a-hash.h
index fbbdb5b8..3218cc27 100644
--- a/lib/fnv1a-hash/fnv1a-hash.h
+++ b/lib/fnv1a-hash/fnv1a-hash.h
@@ -36,4 +36,4 @@ inline uint32_t fnv1a_string_hash(const char* str) {
     }
     return hash;
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/lib/heatshrink/heatshrink_encoder.c b/lib/heatshrink/heatshrink_encoder.c
index 9cd2594c..98f27dff 100644
--- a/lib/heatshrink/heatshrink_encoder.c
+++ b/lib/heatshrink/heatshrink_encoder.c
@@ -232,6 +232,7 @@ HSE_poll_res heatshrink_encoder_poll(heatshrink_encoder *hse,
             break;
         case HSES_FLUSH_BITS:
             hse->state = st_flush_bit_buffer(hse, &oi);
+            /* fall through */
         case HSES_DONE:
             return HSER_POLL_EMPTY;
         default:
diff --git a/lib/infrared/encoder_decoder/common/infrared_common_decoder.c b/lib/infrared/encoder_decoder/common/infrared_common_decoder.c
index c39de09e..1d944285 100644
--- a/lib/infrared/encoder_decoder/common/infrared_common_decoder.c
+++ b/lib/infrared/encoder_decoder/common/infrared_common_decoder.c
@@ -12,7 +12,9 @@ static void infrared_common_decoder_reset_state(InfraredCommonDecoder* decoder);
 static inline size_t consume_samples(uint32_t* array, size_t len, size_t shift) {
     furi_assert(len >= shift);
     len -= shift;
-    for(int i = 0; i < len; ++i) array[i] = array[i + shift];
+    for(size_t i = 0; i < len; ++i) {
+        array[i] = array[i + shift];
+    }
 
     return len;
 }
@@ -83,8 +85,8 @@ static InfraredStatus infrared_common_decode_bits(InfraredCommonDecoder* decoder
         if(timings->min_split_time && !level) {
             if(timing > timings->min_split_time) {
                 /* long low timing - check if we're ready for any of protocol modification */
-                for(int i = 0; decoder->protocol->databit_len[i] &&
-                               (i < COUNT_OF(decoder->protocol->databit_len));
+                for(size_t i = 0; decoder->protocol->databit_len[i] &&
+                                  (i < COUNT_OF(decoder->protocol->databit_len));
                     ++i) {
                     if(decoder->protocol->databit_len[i] == decoder->databit_cnt) {
                         return InfraredStatusReady;
@@ -153,8 +155,8 @@ InfraredStatus
 InfraredStatus
     infrared_common_decode_manchester(InfraredCommonDecoder* decoder, bool level, uint32_t timing) {
     furi_assert(decoder);
-    uint16_t bit = decoder->protocol->timings.bit1_mark;
-    uint16_t tolerance = decoder->protocol->timings.bit_tolerance;
+    uint32_t bit = decoder->protocol->timings.bit1_mark;
+    uint32_t tolerance = decoder->protocol->timings.bit_tolerance;
 
     bool* switch_detect = &decoder->switch_detect;
     furi_assert((*switch_detect == true) || (*switch_detect == false));
@@ -196,7 +198,7 @@ InfraredMessage* infrared_common_decoder_check_ready(InfraredCommonDecoder* deco
     InfraredMessage* message = NULL;
     bool found_length = false;
 
-    for(int i = 0;
+    for(size_t i = 0;
         decoder->protocol->databit_len[i] && (i < COUNT_OF(decoder->protocol->databit_len));
         ++i) {
         if(decoder->protocol->databit_len[i] == decoder->databit_cnt) {
@@ -280,7 +282,7 @@ void* infrared_common_decoder_alloc(const InfraredCommonProtocolSpec* protocol)
     furi_assert(protocol);
 
     /* protocol->databit_len[0] has to contain biggest value of bits that can be decoded */
-    for(int i = 1; i < COUNT_OF(protocol->databit_len); ++i) {
+    for(size_t i = 1; i < COUNT_OF(protocol->databit_len); ++i) {
         furi_assert(protocol->databit_len[i] <= protocol->databit_len[0]);
     }
 
diff --git a/lib/infrared/encoder_decoder/common/infrared_common_encoder.c b/lib/infrared/encoder_decoder/common/infrared_common_encoder.c
index 563c1e64..f755222d 100644
--- a/lib/infrared/encoder_decoder/common/infrared_common_encoder.c
+++ b/lib/infrared/encoder_decoder/common/infrared_common_encoder.c
@@ -146,7 +146,7 @@ void* infrared_common_encoder_alloc(const InfraredCommonProtocolSpec* protocol)
     }
 
     /* protocol->databit_len[0] has to contain biggest value of bits that can be decoded */
-    for(int i = 1; i < COUNT_OF(protocol->databit_len); ++i) {
+    for(size_t i = 1; i < COUNT_OF(protocol->databit_len); ++i) {
         furi_assert(protocol->databit_len[i] <= protocol->databit_len[0]);
     }
 
@@ -174,7 +174,7 @@ void infrared_common_encoder_reset(InfraredCommonEncoder* encoder) {
 
     uint8_t max_databit_len = 0;
 
-    for(int i = 0; i < COUNT_OF(encoder->protocol->databit_len); ++i) {
+    for(size_t i = 0; i < COUNT_OF(encoder->protocol->databit_len); ++i) {
         max_databit_len = MAX(max_databit_len, encoder->protocol->databit_len[i]);
     }
 
diff --git a/lib/infrared/encoder_decoder/infrared.c b/lib/infrared/encoder_decoder/infrared.c
index 5dfa9281..59b11d5c 100644
--- a/lib/infrared/encoder_decoder/infrared.c
+++ b/lib/infrared/encoder_decoder/infrared.c
@@ -123,7 +123,7 @@ const InfraredMessage*
     InfraredMessage* message = NULL;
     InfraredMessage* result = NULL;
 
-    for(int i = 0; i < COUNT_OF(infrared_encoder_decoder); ++i) {
+    for(size_t i = 0; i < COUNT_OF(infrared_encoder_decoder); ++i) {
         if(infrared_encoder_decoder[i].decoder.decode) {
             message = infrared_encoder_decoder[i].decoder.decode(handler->ctx[i], level, duration);
             if(!result && message) {
@@ -139,7 +139,7 @@ InfraredDecoderHandler* infrared_alloc_decoder(void) {
     InfraredDecoderHandler* handler = malloc(sizeof(InfraredDecoderHandler));
     handler->ctx = malloc(sizeof(void*) * COUNT_OF(infrared_encoder_decoder));
 
-    for(int i = 0; i < COUNT_OF(infrared_encoder_decoder); ++i) {
+    for(size_t i = 0; i < COUNT_OF(infrared_encoder_decoder); ++i) {
         handler->ctx[i] = 0;
         if(infrared_encoder_decoder[i].decoder.alloc)
             handler->ctx[i] = infrared_encoder_decoder[i].decoder.alloc();
@@ -153,7 +153,7 @@ void infrared_free_decoder(InfraredDecoderHandler* handler) {
     furi_assert(handler);
     furi_assert(handler->ctx);
 
-    for(int i = 0; i < COUNT_OF(infrared_encoder_decoder); ++i) {
+    for(size_t i = 0; i < COUNT_OF(infrared_encoder_decoder); ++i) {
         if(infrared_encoder_decoder[i].decoder.free)
             infrared_encoder_decoder[i].decoder.free(handler->ctx[i]);
     }
@@ -163,7 +163,7 @@ void infrared_free_decoder(InfraredDecoderHandler* handler) {
 }
 
 void infrared_reset_decoder(InfraredDecoderHandler* handler) {
-    for(int i = 0; i < COUNT_OF(infrared_encoder_decoder); ++i) {
+    for(size_t i = 0; i < COUNT_OF(infrared_encoder_decoder); ++i) {
         if(infrared_encoder_decoder[i].decoder.reset)
             infrared_encoder_decoder[i].decoder.reset(handler->ctx[i]);
     }
@@ -175,7 +175,7 @@ const InfraredMessage* infrared_check_decoder_ready(InfraredDecoderHandler* hand
     InfraredMessage* message = NULL;
     InfraredMessage* result = NULL;
 
-    for(int i = 0; i < COUNT_OF(infrared_encoder_decoder); ++i) {
+    for(size_t i = 0; i < COUNT_OF(infrared_encoder_decoder); ++i) {
         if(infrared_encoder_decoder[i].decoder.check_ready) {
             message = infrared_encoder_decoder[i].decoder.check_ready(handler->ctx[i]);
             if(!result && message) {
@@ -209,7 +209,7 @@ void infrared_free_encoder(InfraredEncoderHandler* handler) {
 }
 
 static int infrared_find_index_by_protocol(InfraredProtocol protocol) {
-    for(int i = 0; i < COUNT_OF(infrared_encoder_decoder); ++i) {
+    for(size_t i = 0; i < COUNT_OF(infrared_encoder_decoder); ++i) {
         if(infrared_encoder_decoder[i].get_protocol_spec(protocol)) {
             return i;
         }
diff --git a/lib/infrared/encoder_decoder/nec/infrared_decoder_nec.c b/lib/infrared/encoder_decoder/nec/infrared_decoder_nec.c
index 10ff56da..3ad14a7a 100644
--- a/lib/infrared/encoder_decoder/nec/infrared_decoder_nec.c
+++ b/lib/infrared/encoder_decoder/nec/infrared_decoder_nec.c
@@ -20,7 +20,9 @@ bool infrared_decoder_nec_interpret(InfraredCommonDecoder* decoder) {
         uint8_t address_inverse = decoder->data[1];
         uint8_t command = decoder->data[2];
         uint8_t command_inverse = decoder->data[3];
-        if((command == (uint8_t)~command_inverse) && (address == (uint8_t)~address_inverse)) {
+        uint8_t inverse_command_inverse = (uint8_t)~command_inverse;
+        uint8_t inverse_address_inverse = (uint8_t)~address_inverse;
+        if((command == inverse_command_inverse) && (address == inverse_address_inverse)) {
             decoder->message.protocol = InfraredProtocolNEC;
             decoder->message.address = address;
             decoder->message.command = command;
diff --git a/lib/infrared/encoder_decoder/rc6/infrared_decoder_rc6.c b/lib/infrared/encoder_decoder/rc6/infrared_decoder_rc6.c
index 9101cac1..13d3e536 100644
--- a/lib/infrared/encoder_decoder/rc6/infrared_decoder_rc6.c
+++ b/lib/infrared/encoder_decoder/rc6/infrared_decoder_rc6.c
@@ -60,8 +60,8 @@ InfraredStatus infrared_decoder_rc6_decode_manchester(
     uint32_t timing) {
     // 4th bit lasts 2x times more
     InfraredStatus status = InfraredStatusError;
-    uint16_t bit = decoder->protocol->timings.bit1_mark;
-    uint16_t tolerance = decoder->protocol->timings.bit_tolerance;
+    uint32_t bit = decoder->protocol->timings.bit1_mark;
+    uint32_t tolerance = decoder->protocol->timings.bit_tolerance;
 
     bool single_timing = MATCH_TIMING(timing, bit, tolerance);
     bool double_timing = MATCH_TIMING(timing, 2 * bit, tolerance);
diff --git a/lib/infrared/encoder_decoder/samsung/infrared_decoder_samsung.c b/lib/infrared/encoder_decoder/samsung/infrared_decoder_samsung.c
index 4450ffd1..e8cd3b05 100644
--- a/lib/infrared/encoder_decoder/samsung/infrared_decoder_samsung.c
+++ b/lib/infrared/encoder_decoder/samsung/infrared_decoder_samsung.c
@@ -17,8 +17,9 @@ bool infrared_decoder_samsung32_interpret(InfraredCommonDecoder* decoder) {
     uint8_t address2 = decoder->data[1];
     uint8_t command = decoder->data[2];
     uint8_t command_inverse = decoder->data[3];
+    uint8_t inverse_command_inverse = (uint8_t)~command_inverse;
 
-    if((address1 == address2) && (command == (uint8_t)~command_inverse)) {
+    if((address1 == address2) && (command == inverse_command_inverse)) {
         decoder->message.command = command;
         decoder->message.address = address1;
         decoder->message.protocol = InfraredProtocolSamsung32;
diff --git a/lib/infrared/encoder_decoder/sirc/infrared_encoder_sirc.c b/lib/infrared/encoder_decoder/sirc/infrared_encoder_sirc.c
index a6918cee..8ae9e371 100644
--- a/lib/infrared/encoder_decoder/sirc/infrared_encoder_sirc.c
+++ b/lib/infrared/encoder_decoder/sirc/infrared_encoder_sirc.c
@@ -38,7 +38,7 @@ InfraredStatus infrared_encoder_sirc_encode_repeat(
     bool* level) {
     furi_assert(encoder);
 
-    furi_assert(encoder->timings_encoded == (1 + 2 + encoder->bits_to_encode * 2 - 1));
+    furi_assert(encoder->timings_encoded == (1u + 2 + encoder->bits_to_encode * 2 - 1));
 
     furi_assert(encoder->timings_sum < INFRARED_SIRC_REPEAT_PERIOD);
     *duration = INFRARED_SIRC_REPEAT_PERIOD - encoder->timings_sum;
diff --git a/lib/infrared/worker/infrared_worker.c b/lib/infrared/worker/infrared_worker.c
index 5711d2c0..71126c86 100644
--- a/lib/infrared/worker/infrared_worker.c
+++ b/lib/infrared/worker/infrared_worker.c
@@ -597,6 +597,7 @@ void infrared_worker_set_raw_signal(
 
 InfraredWorkerGetSignalResponse
     infrared_worker_tx_get_signal_steady_callback(void* context, InfraredWorker* instance) {
+    UNUSED(context);
     InfraredWorkerGetSignalResponse response = instance->tx.steady_signal_sent ?
                                                    InfraredWorkerGetSignalResponseSame :
                                                    InfraredWorkerGetSignalResponseNew;
diff --git a/lib/lfs_config.h b/lib/lfs_config.h
index a545551c..59b3c486 100644
--- a/lib/lfs_config.h
+++ b/lib/lfs_config.h
@@ -4,6 +4,9 @@
 
 #ifdef FURI_NDEBUG
 #define LFS_NO_ASSERT
+#define LFS_ASSERT(x)
+#else 
+#define LFS_ASSERT furi_assert
 #endif
 
 #define LFS_TAG "Lfs"
@@ -16,7 +19,6 @@
 
 #define LFS_ERROR(...) FURI_LOG_E(LFS_TAG, __VA_ARGS__);
 
-#define LFS_ASSERT furi_assert
 
 // Because crc
 #undef LFS_CONFIG
diff --git a/lib/lib.mk b/lib/lib.mk
index 1470c89f..cb58fade 100644
--- a/lib/lib.mk
+++ b/lib/lib.mk
@@ -4,7 +4,7 @@ LIB_DIR			= $(PROJECT_ROOT)/lib
 CFLAGS			+= -I$(LIB_DIR)
 
 # Mlib containers
-CFLAGS			+= -I$(LIB_DIR)/mlib
+CFLAGS			+= -I$(LIB_DIR)/mlib -D'M_MEMORY_FULL(x)=abort()'
 
 # U8G2 display library
 U8G2_DIR		= $(LIB_DIR)/u8g2
diff --git a/lib/libusb_stm32 b/lib/libusb_stm32
index fd58c2b0..6a88ec4d 160000
--- a/lib/libusb_stm32
+++ b/lib/libusb_stm32
@@ -1 +1 @@
-Subproject commit fd58c2b04710554626ac69d9fb5fa1211d1bcaf0
+Subproject commit 6a88ec4d7709ca8605b5ec3e609057c330ca2a70
diff --git a/lib/micro-ecc/asm_arm.inc b/lib/micro-ecc/asm_arm.inc
index 688fdc75..43844da6 100644
--- a/lib/micro-ecc/asm_arm.inc
+++ b/lib/micro-ecc/asm_arm.inc
@@ -97,6 +97,7 @@ uECC_VLI_API uECC_word_t uECC_vli_add(uECC_word_t *result,
 }
 #define asm_add 1
 
+#pragma GCC diagnostic ignored "-Wredundant-decls"
 uECC_VLI_API uECC_word_t uECC_vli_sub(uECC_word_t *result,
                                       const uECC_word_t *left,
                                       const uECC_word_t *right,
diff --git a/lib/micro-ecc/curve-specific.inc b/lib/micro-ecc/curve-specific.inc
index 0453b212..f5d3da84 100644
--- a/lib/micro-ecc/curve-specific.inc
+++ b/lib/micro-ecc/curve-specific.inc
@@ -542,6 +542,7 @@ static void mod_sqrt_secp224r1_rp(uECC_word_t *d1,
 /* Compute a = sqrt(a) (mod curve_p). */
 /* Routine 3.2.8 mp_mod_sqrt_224; from http://www.nsa.gov/ia/_files/nist-routines.pdf */
 static void mod_sqrt_secp224r1(uECC_word_t *a, uECC_Curve curve) {
+    (void)curve;
     bitcount_t i;
     uECC_word_t e1[num_words_secp224r1];
     uECC_word_t f1[num_words_secp224r1];
diff --git a/lib/nfc_protocols/emv.c b/lib/nfc_protocols/emv.c
index 81a05e35..8e14cf48 100644
--- a/lib/nfc_protocols/emv.c
+++ b/lib/nfc_protocols/emv.c
@@ -292,7 +292,7 @@ static bool emv_decode_read_sfi_record(uint8_t* buff, uint16_t len, EmvApplicati
             i += 2;
         } else if(emv_decode_search_tag_u16_r(EMV_TAG_COUNTRY_CODE, buff, &i)) {
             app->country_code = (buff[i] << 8) | buff[i + 1];
-            i += 2;
+            i += 1;
         }
     }
 
diff --git a/lib/nfc_protocols/mifare_classic.c b/lib/nfc_protocols/mifare_classic.c
index c738accc..ace37bff 100644
--- a/lib/nfc_protocols/mifare_classic.c
+++ b/lib/nfc_protocols/mifare_classic.c
@@ -36,6 +36,7 @@ uint8_t mf_classic_get_total_sectors_num(MfClassicReader* reader) {
 }
 
 bool mf_classic_check_card_type(uint8_t ATQA0, uint8_t ATQA1, uint8_t SAK) {
+    UNUSED(ATQA1);
     if((ATQA0 == 0x44 || ATQA0 == 0x04) && (SAK == 0x08)) {
         return true;
     } else if((ATQA0 == 0x42 || ATQA0 == 0x02) && (SAK == 0x18)) {
@@ -52,6 +53,7 @@ bool mf_classic_get_type(
     uint8_t ATQA1,
     uint8_t SAK,
     MfClassicReader* reader) {
+    UNUSED(ATQA1);
     furi_assert(uid);
     furi_assert(reader);
     memset(reader, 0, sizeof(MfClassicReader));
@@ -204,7 +206,6 @@ bool mf_classic_read_block(
     MfClassicBlock* block) {
     furi_assert(tx_rx);
     furi_assert(crypto);
-    furi_assert(block_num < MF_CLASSIC_TOTAL_BLOCKS_MAX);
     furi_assert(block);
 
     bool read_block_success = false;
diff --git a/lib/nfc_protocols/mifare_desfire.c b/lib/nfc_protocols/mifare_desfire.c
index 6a9c13b6..4f02e839 100644
--- a/lib/nfc_protocols/mifare_desfire.c
+++ b/lib/nfc_protocols/mifare_desfire.c
@@ -444,4 +444,4 @@ bool mf_df_parse_read_data_response(uint8_t* buf, uint16_t len, MifareDesfireFil
     out->contents = malloc(len);
     memcpy(out->contents, buf, len);
     return true;
-}
\ No newline at end of file
+}
diff --git a/lib/nfc_protocols/mifare_ultralight.h b/lib/nfc_protocols/mifare_ultralight.h
index 1947f10a..858fc3ec 100644
--- a/lib/nfc_protocols/mifare_ultralight.h
+++ b/lib/nfc_protocols/mifare_ultralight.h
@@ -123,4 +123,4 @@ bool mf_ul_prepare_emulation_response(
     uint8_t* buff_tx,
     uint16_t* buff_tx_len,
     uint32_t* data_type,
-    void* context);
\ No newline at end of file
+    void* context);
diff --git a/lib/nfc_protocols/nfc_util.c b/lib/nfc_protocols/nfc_util.c
index 69c13ed4..9de6f982 100644
--- a/lib/nfc_protocols/nfc_util.c
+++ b/lib/nfc_protocols/nfc_util.c
@@ -45,19 +45,3 @@ uint8_t nfc_util_even_parity32(uint32_t data) {
 uint8_t nfc_util_odd_parity8(uint8_t data) {
     return nfc_util_odd_byte_parity[data];
 }
-
-void nfc_util_merge_data_and_parity(
-    uint8_t* data,
-    uint16_t data_len,
-    uint8_t* parity,
-    uint16_t parity_len,
-    uint8_t* res,
-    uint16_t* res_len);
-
-void nfc_util_split_data_and_parity(
-    uint8_t* data,
-    uint16_t data_len,
-    uint8_t* parity,
-    uint16_t parity_len,
-    uint8_t* res,
-    uint16_t* res_len);
\ No newline at end of file
diff --git a/lib/nfc_protocols/nfc_util.h b/lib/nfc_protocols/nfc_util.h
index caeb20c9..d530badc 100644
--- a/lib/nfc_protocols/nfc_util.h
+++ b/lib/nfc_protocols/nfc_util.h
@@ -9,19 +9,3 @@ uint64_t nfc_util_bytes2num(uint8_t* src, uint8_t len);
 uint8_t nfc_util_even_parity32(uint32_t data);
 
 uint8_t nfc_util_odd_parity8(uint8_t data);
-
-void nfc_util_merge_data_and_parity(
-    uint8_t* data,
-    uint16_t data_len,
-    uint8_t* parity,
-    uint16_t parity_len,
-    uint8_t* res,
-    uint16_t* res_len);
-
-void nfc_util_split_data_and_parity(
-    uint8_t* data,
-    uint16_t data_len,
-    uint8_t* parity,
-    uint16_t parity_len,
-    uint8_t* res,
-    uint16_t* res_len);
diff --git a/lib/nfc_protocols/nfca.c b/lib/nfc_protocols/nfca.c
index fe001f88..81a6ddfc 100755
--- a/lib/nfc_protocols/nfca.c
+++ b/lib/nfc_protocols/nfca.c
@@ -52,4 +52,4 @@ bool nfca_emulation_handler(
     }
 
     return sleep;
-}
\ No newline at end of file
+}
diff --git a/lib/one_wire/ibutton/encoder/encoder_cyfral.h b/lib/one_wire/ibutton/encoder/encoder_cyfral.h
index 1b0c3e12..4fc7be5e 100644
--- a/lib/one_wire/ibutton/encoder/encoder_cyfral.h
+++ b/lib/one_wire/ibutton/encoder/encoder_cyfral.h
@@ -51,4 +51,4 @@ void encoder_cyfral_get_pulse(EncoderCyfral* cyfral, bool* polarity, uint32_t* l
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/lib/one_wire/ibutton/encoder/encoder_metakom.h b/lib/one_wire/ibutton/encoder/encoder_metakom.h
index 2812dc12..50ff11a2 100644
--- a/lib/one_wire/ibutton/encoder/encoder_metakom.h
+++ b/lib/one_wire/ibutton/encoder/encoder_metakom.h
@@ -51,4 +51,4 @@ void encoder_metakom_get_pulse(EncoderMetakom* metakom, bool* polarity, uint32_t
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/lib/one_wire/ibutton/ibutton_key.c b/lib/one_wire/ibutton/ibutton_key.c
index c90d5f4a..c6d4466f 100644
--- a/lib/one_wire/ibutton/ibutton_key.c
+++ b/lib/one_wire/ibutton/ibutton_key.c
@@ -118,4 +118,4 @@ bool ibutton_key_dallas_crc_is_valid(iButtonKey* key) {
 
 bool ibutton_key_dallas_is_1990_key(iButtonKey* key) {
     return (key->data[0] == 0x01);
-}
\ No newline at end of file
+}
diff --git a/lib/one_wire/ibutton/ibutton_key.h b/lib/one_wire/ibutton/ibutton_key.h
index f8286103..8d6732bc 100644
--- a/lib/one_wire/ibutton/ibutton_key.h
+++ b/lib/one_wire/ibutton/ibutton_key.h
@@ -142,4 +142,4 @@ bool ibutton_key_dallas_is_1990_key(iButtonKey* key);
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/lib/one_wire/ibutton/ibutton_key_command.h b/lib/one_wire/ibutton/ibutton_key_command.h
index 3978ea51..88049d06 100644
--- a/lib/one_wire/ibutton/ibutton_key_command.h
+++ b/lib/one_wire/ibutton/ibutton_key_command.h
@@ -25,4 +25,4 @@
 #define TM01_CMD_SWITCH_TO_CYFRAL 0xCA
 #define TM01_CMD_SWITCH_TO_METAKOM 0xCB
 
-#define DS1990_CMD_READ_ROM 0x33
\ No newline at end of file
+#define DS1990_CMD_READ_ROM 0x33
diff --git a/lib/one_wire/ibutton/ibutton_worker.c b/lib/one_wire/ibutton/ibutton_worker.c
index 74734e75..82c3d688 100644
--- a/lib/one_wire/ibutton/ibutton_worker.c
+++ b/lib/one_wire/ibutton/ibutton_worker.c
@@ -9,6 +9,7 @@ typedef enum {
     iButtonMessageRead,
     iButtonMessageWrite,
     iButtonMessageEmulate,
+    iButtonMessageNotifyEmulate,
 } iButtonMessageType;
 
 typedef struct {
@@ -145,6 +146,11 @@ void ibutton_worker_switch_mode(iButtonWorker* worker, iButtonWorkerMode mode) {
     ibutton_worker_modes[worker->mode_index].start(worker);
 }
 
+void ibutton_worker_notify_emulate(iButtonWorker* worker) {
+    iButtonMessage message = {.type = iButtonMessageNotifyEmulate};
+    furi_check(osMessageQueuePut(worker->messages, &message, 0, 0) == osOK);
+}
+
 void ibutton_worker_set_key_p(iButtonWorker* worker, iButtonKey* key) {
     worker->key_p = key;
 }
@@ -183,6 +189,11 @@ static int32_t ibutton_worker_thread(void* thread_context) {
                 ibutton_worker_set_key_p(worker, message.data.key);
                 ibutton_worker_switch_mode(worker, iButtonWorkerEmulate);
                 break;
+            case iButtonMessageNotifyEmulate:
+                if(worker->emulate_cb) {
+                    worker->emulate_cb(worker->cb_ctx, true);
+                }
+                break;
             }
         } else if(status == osErrorTimeout) {
             ibutton_worker_modes[worker->mode_index].tick(worker);
diff --git a/lib/one_wire/ibutton/ibutton_worker.h b/lib/one_wire/ibutton/ibutton_worker.h
index 3350e05f..5c8b1fc3 100644
--- a/lib/one_wire/ibutton/ibutton_worker.h
+++ b/lib/one_wire/ibutton/ibutton_worker.h
@@ -110,4 +110,4 @@ void ibutton_worker_stop(iButtonWorker* worker);
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/lib/one_wire/ibutton/ibutton_worker_i.h b/lib/one_wire/ibutton/ibutton_worker_i.h
index 14e5d39d..93755481 100644
--- a/lib/one_wire/ibutton/ibutton_worker_i.h
+++ b/lib/one_wire/ibutton/ibutton_worker_i.h
@@ -27,9 +27,9 @@ typedef enum {
 
 typedef struct {
     const uint32_t quant;
-    const void (*start)(iButtonWorker* worker);
-    const void (*tick)(iButtonWorker* worker);
-    const void (*stop)(iButtonWorker* worker);
+    void (*const start) (iButtonWorker* worker);
+    void (*const tick) (iButtonWorker* worker);
+    void (*const stop) (iButtonWorker* worker);
 } iButtonWorkerModeType;
 
 typedef enum {
@@ -73,7 +73,8 @@ struct iButtonWorker {
 extern const iButtonWorkerModeType ibutton_worker_modes[];
 
 void ibutton_worker_switch_mode(iButtonWorker* worker, iButtonWorkerMode mode);
+void ibutton_worker_notify_emulate(iButtonWorker* worker);
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/lib/one_wire/ibutton/ibutton_worker_modes.c b/lib/one_wire/ibutton/ibutton_worker_modes.c
index 7ee3a005..5ee76862 100644
--- a/lib/one_wire/ibutton/ibutton_worker_modes.c
+++ b/lib/one_wire/ibutton/ibutton_worker_modes.c
@@ -49,12 +49,15 @@ const iButtonWorkerModeType ibutton_worker_modes[] = {
 /*********************** IDLE ***********************/
 
 void ibutton_worker_mode_idle_start(iButtonWorker* worker) {
+    UNUSED(worker);
 }
 
 void ibutton_worker_mode_idle_tick(iButtonWorker* worker) {
+    UNUSED(worker);
 }
 
 void ibutton_worker_mode_idle_stop(iButtonWorker* worker) {
+    UNUSED(worker);
 }
 
 /*********************** READ ***********************/
@@ -151,6 +154,7 @@ bool ibutton_worker_read_dallas(iButtonWorker* worker) {
 }
 
 void ibutton_worker_mode_read_start(iButtonWorker* worker) {
+    UNUSED(worker);
     furi_hal_power_enable_otg();
 }
 
@@ -172,6 +176,7 @@ void ibutton_worker_mode_read_tick(iButtonWorker* worker) {
 }
 
 void ibutton_worker_mode_read_stop(iButtonWorker* worker) {
+    UNUSED(worker);
     furi_hal_power_disable_otg();
 }
 
@@ -179,9 +184,7 @@ void ibutton_worker_mode_read_stop(iButtonWorker* worker) {
 static void onewire_slave_callback(void* context) {
     furi_assert(context);
     iButtonWorker* worker = context;
-    if(worker->emulate_cb != NULL) {
-        worker->emulate_cb(worker->cb_ctx, true);
-    }
+    ibutton_worker_notify_emulate(worker);
 }
 
 void ibutton_worker_emulate_dallas_start(iButtonWorker* worker) {
@@ -251,6 +254,7 @@ void ibutton_worker_emulate_timer_start(iButtonWorker* worker) {
 }
 
 void ibutton_worker_emulate_timer_stop(iButtonWorker* worker) {
+    UNUSED(worker);
     furi_hal_ibutton_emulate_stop();
 }
 
@@ -272,6 +276,7 @@ void ibutton_worker_mode_emulate_start(iButtonWorker* worker) {
 }
 
 void ibutton_worker_mode_emulate_tick(iButtonWorker* worker) {
+    UNUSED(worker);
 }
 
 void ibutton_worker_mode_emulate_stop(iButtonWorker* worker) {
@@ -327,4 +332,4 @@ void ibutton_worker_mode_write_tick(iButtonWorker* worker) {
 void ibutton_worker_mode_write_stop(iButtonWorker* worker) {
     furi_hal_power_disable_otg();
     onewire_host_stop(worker->host);
-}
\ No newline at end of file
+}
diff --git a/lib/one_wire/ibutton/ibutton_writer.h b/lib/one_wire/ibutton/ibutton_writer.h
index 8e81cfd1..6dbdbb27 100644
--- a/lib/one_wire/ibutton/ibutton_writer.h
+++ b/lib/one_wire/ibutton/ibutton_writer.h
@@ -57,4 +57,4 @@ void ibutton_writer_stop(iButtonWriter* writer);
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/lib/one_wire/ibutton/pulse_protocols/protocol_cyfral.h b/lib/one_wire/ibutton/pulse_protocols/protocol_cyfral.h
index 4a7c00e4..10305da1 100644
--- a/lib/one_wire/ibutton/pulse_protocols/protocol_cyfral.h
+++ b/lib/one_wire/ibutton/pulse_protocols/protocol_cyfral.h
@@ -35,4 +35,4 @@ PulseProtocol* protocol_cyfral_get_protocol(ProtocolCyfral* cyfral);
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/lib/one_wire/ibutton/pulse_protocols/protocol_metakom.h b/lib/one_wire/ibutton/pulse_protocols/protocol_metakom.h
index fbafc235..fdc45769 100644
--- a/lib/one_wire/ibutton/pulse_protocols/protocol_metakom.h
+++ b/lib/one_wire/ibutton/pulse_protocols/protocol_metakom.h
@@ -35,4 +35,4 @@ PulseProtocol* protocol_metakom_get_protocol(ProtocolMetakom* metakom);
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/lib/one_wire/maxim_crc.c b/lib/one_wire/maxim_crc.c
index bd89d3ad..a5d099b1 100644
--- a/lib/one_wire/maxim_crc.c
+++ b/lib/one_wire/maxim_crc.c
@@ -13,4 +13,4 @@ uint8_t maxim_crc8(const uint8_t* data, const uint8_t data_size, const uint8_t c
         }
     }
     return crc;
-}
\ No newline at end of file
+}
diff --git a/lib/one_wire/maxim_crc.h b/lib/one_wire/maxim_crc.h
index 1b7e8498..4bab5714 100644
--- a/lib/one_wire/maxim_crc.h
+++ b/lib/one_wire/maxim_crc.h
@@ -11,4 +11,4 @@ uint8_t maxim_crc8(const uint8_t* data, const uint8_t data_size, const uint8_t c
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/lib/one_wire/one_wire_device.h b/lib/one_wire/one_wire_device.h
index 4ff16790..fc687c7b 100644
--- a/lib/one_wire/one_wire_device.h
+++ b/lib/one_wire/one_wire_device.h
@@ -71,4 +71,4 @@ uint8_t* onewire_device_get_id_p(OneWireDevice* device);
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/lib/one_wire/one_wire_host.c b/lib/one_wire/one_wire_host.c
index fd8deaf8..1bb0a1cc 100644
--- a/lib/one_wire/one_wire_host.c
+++ b/lib/one_wire/one_wire_host.c
@@ -23,6 +23,7 @@ void onewire_host_free(OneWireHost* host) {
 }
 
 bool onewire_host_reset(OneWireHost* host) {
+    UNUSED(host);
     uint8_t r;
     uint8_t retries = 125;
 
@@ -52,6 +53,7 @@ bool onewire_host_reset(OneWireHost* host) {
 }
 
 bool onewire_host_read_bit(OneWireHost* host) {
+    UNUSED(host);
     bool result;
 
     // drive low
@@ -88,6 +90,7 @@ void onewire_host_read_bytes(OneWireHost* host, uint8_t* buffer, uint16_t count)
 }
 
 void onewire_host_write_bit(OneWireHost* host, bool value) {
+    UNUSED(host);
     if(value) {
         // drive low
         furi_hal_ibutton_pin_low();
@@ -120,10 +123,12 @@ void onewire_host_skip(OneWireHost* host) {
 }
 
 void onewire_host_start(OneWireHost* host) {
+    UNUSED(host);
     furi_hal_ibutton_start_drive();
 }
 
 void onewire_host_stop(OneWireHost* host) {
+    UNUSED(host);
     furi_hal_ibutton_stop();
 }
 
diff --git a/lib/one_wire/one_wire_host.h b/lib/one_wire/one_wire_host.h
index 21530640..5b55ee8d 100644
--- a/lib/one_wire/one_wire_host.h
+++ b/lib/one_wire/one_wire_host.h
@@ -118,4 +118,4 @@ uint8_t onewire_host_search(OneWireHost* host, uint8_t* newAddr, OneWireHostSear
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/lib/one_wire/one_wire_slave.c b/lib/one_wire/one_wire_slave.c
index e8cc5ac1..3c9a796d 100644
--- a/lib/one_wire/one_wire_slave.c
+++ b/lib/one_wire/one_wire_slave.c
@@ -37,6 +37,7 @@ struct OneWireSlave {
 /*********************** PRIVATE ***********************/
 
 uint32_t onewire_slave_wait_while_gpio_is(OneWireSlave* bus, uint32_t time, const bool pin_value) {
+    UNUSED(bus);
     uint32_t start = DWT->CYCCNT;
     uint32_t time_ticks = time * furi_hal_delay_instructions_per_microsecond();
     uint32_t time_captured;
@@ -253,6 +254,7 @@ void onewire_slave_start(OneWireSlave* bus) {
 }
 
 void onewire_slave_stop(OneWireSlave* bus) {
+    UNUSED(bus);
     furi_hal_ibutton_stop();
     furi_hal_ibutton_remove_interrupt();
 }
diff --git a/lib/one_wire/pulse_protocols/pulse_decoder.h b/lib/one_wire/pulse_protocols/pulse_decoder.h
index 4e9f9d22..dbaef52b 100644
--- a/lib/one_wire/pulse_protocols/pulse_decoder.h
+++ b/lib/one_wire/pulse_protocols/pulse_decoder.h
@@ -67,4 +67,4 @@ void pulse_decoder_get_data(PulseDecoder* decoder, int32_t index, uint8_t* data,
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/lib/one_wire/pulse_protocols/pulse_glue.h b/lib/one_wire/pulse_protocols/pulse_glue.h
index aa58f239..4954e271 100644
--- a/lib/one_wire/pulse_protocols/pulse_glue.h
+++ b/lib/one_wire/pulse_protocols/pulse_glue.h
@@ -23,4 +23,4 @@ void pulse_glue_pop(PulseGlue* pulse_glue, uint32_t* length, uint32_t* period);
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/lib/one_wire/pulse_protocols/pulse_protocol.c b/lib/one_wire/pulse_protocols/pulse_protocol.c
index ac01ea92..76feba11 100644
--- a/lib/one_wire/pulse_protocols/pulse_protocol.c
+++ b/lib/one_wire/pulse_protocols/pulse_protocol.c
@@ -64,4 +64,4 @@ void pulse_protocol_get_data(PulseProtocol* protocol, uint8_t* data, size_t leng
     if(protocol->get_data_cb != NULL) {
         protocol->get_data_cb(protocol->context, data, length);
     }
-}
\ No newline at end of file
+}
diff --git a/lib/one_wire/pulse_protocols/pulse_protocol.h b/lib/one_wire/pulse_protocols/pulse_protocol.h
index 01bc14a1..bfce0e76 100644
--- a/lib/one_wire/pulse_protocols/pulse_protocol.h
+++ b/lib/one_wire/pulse_protocols/pulse_protocol.h
@@ -119,4 +119,4 @@ void pulse_protocol_reset(PulseProtocol* protocol);
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/lib/qrcode/qrcode.c b/lib/qrcode/qrcode.c
index cbbf4a47..fb5bd8a6 100644
--- a/lib/qrcode/qrcode.c
+++ b/lib/qrcode/qrcode.c
@@ -972,4 +972,4 @@ bool qrcode_getModule(QRCode* qrcode, uint8_t x, uint8_t y) {
 
     uint32_t offset = y * qrcode->size + x;
     return (qrcode->modules[offset >> 3] & (1 << (7 - (offset & 0x07)))) != 0;
-}
\ No newline at end of file
+}
diff --git a/lib/qrcode/qrcode.h b/lib/qrcode/qrcode.h
index bc3ccb59..6d637ba0 100644
--- a/lib/qrcode/qrcode.h
+++ b/lib/qrcode/qrcode.h
@@ -96,4 +96,4 @@ bool qrcode_getModule(QRCode* qrcode, uint8_t x, uint8_t y);
 }
 #endif /* __cplusplus */
 
-#endif /* __QRCODE_H_ */
\ No newline at end of file
+#endif /* __QRCODE_H_ */
diff --git a/lib/subghz/blocks/generic.h b/lib/subghz/blocks/generic.h
index 0d8fe0a2..1a7bca83 100644
--- a/lib/subghz/blocks/generic.h
+++ b/lib/subghz/blocks/generic.h
@@ -16,7 +16,7 @@ struct SubGhzBlockGeneric {
     uint32_t serial;
     uint8_t data_count_bit;
     uint8_t btn;
-    uint16_t cnt;
+    uint32_t cnt;
 };
 
 /**
diff --git a/lib/subghz/protocols/came.c b/lib/subghz/protocols/came.c
index 467e3154..8817b380 100644
--- a/lib/subghz/protocols/came.c
+++ b/lib/subghz/protocols/came.c
@@ -76,6 +76,7 @@ const SubGhzProtocol subghz_protocol_came = {
 };
 
 void* subghz_protocol_encoder_came_alloc(SubGhzEnvironment* environment) {
+    UNUSED(environment);
     SubGhzProtocolEncoderCame* instance = malloc(sizeof(SubGhzProtocolEncoderCame));
 
     instance->base.protocol = &subghz_protocol_came;
@@ -182,6 +183,7 @@ LevelDuration subghz_protocol_encoder_came_yield(void* context) {
 }
 
 void* subghz_protocol_decoder_came_alloc(SubGhzEnvironment* environment) {
+    UNUSED(environment);
     SubGhzProtocolDecoderCame* instance = malloc(sizeof(SubGhzProtocolDecoderCame));
     instance->base.protocol = &subghz_protocol_came;
     instance->generic.protocol_name = instance->base.protocol->name;
diff --git a/lib/subghz/protocols/came_atomo.c b/lib/subghz/protocols/came_atomo.c
index 67d5398f..51e7fe0b 100644
--- a/lib/subghz/protocols/came_atomo.c
+++ b/lib/subghz/protocols/came_atomo.c
@@ -136,7 +136,7 @@ void subghz_protocol_decoder_came_atomo_feed(void* context, bool level, uint32_t
                 subghz_protocol_came_atomo_const.te_delta) {
                 event = ManchesterEventLongLow;
             } else if(
-                duration >= (subghz_protocol_came_atomo_const.te_long * 2 +
+                duration >= ((uint32_t)subghz_protocol_came_atomo_const.te_long * 2 +
                              subghz_protocol_came_atomo_const.te_delta)) {
                 if(instance->decoder.decode_count_bit ==
                    subghz_protocol_came_atomo_const.min_count_bit_for_found) {
diff --git a/lib/subghz/protocols/came_twee.c b/lib/subghz/protocols/came_twee.c
index fe5f7877..4ca11623 100644
--- a/lib/subghz/protocols/came_twee.c
+++ b/lib/subghz/protocols/came_twee.c
@@ -103,6 +103,7 @@ const SubGhzProtocol subghz_protocol_came_twee = {
 };
 
 void* subghz_protocol_encoder_came_twee_alloc(SubGhzEnvironment* environment) {
+    UNUSED(environment);
     SubGhzProtocolEncoderCameTwee* instance = malloc(sizeof(SubGhzProtocolEncoderCameTwee));
 
     instance->base.protocol = &subghz_protocol_came_twee;
@@ -289,6 +290,7 @@ LevelDuration subghz_protocol_encoder_came_twee_yield(void* context) {
 }
 
 void* subghz_protocol_decoder_came_twee_alloc(SubGhzEnvironment* environment) {
+    UNUSED(environment);
     SubGhzProtocolDecoderCameTwee* instance = malloc(sizeof(SubGhzProtocolDecoderCameTwee));
     instance->base.protocol = &subghz_protocol_came_twee;
     instance->generic.protocol_name = instance->base.protocol->name;
@@ -351,7 +353,7 @@ void subghz_protocol_decoder_came_twee_feed(void* context, bool level, uint32_t
                 subghz_protocol_came_twee_const.te_delta) {
                 event = ManchesterEventLongLow;
             } else if(
-                duration >= (subghz_protocol_came_twee_const.te_long * 2 +
+                duration >= ((uint32_t)subghz_protocol_came_twee_const.te_long * 2 +
                              subghz_protocol_came_twee_const.te_delta)) {
                 if(instance->decoder.decode_count_bit >=
                    subghz_protocol_came_twee_const.min_count_bit_for_found) {
diff --git a/lib/subghz/protocols/faac_slh.c b/lib/subghz/protocols/faac_slh.c
index d5006ae6..d5761831 100644
--- a/lib/subghz/protocols/faac_slh.c
+++ b/lib/subghz/protocols/faac_slh.c
@@ -69,6 +69,7 @@ const SubGhzProtocol subghz_protocol_faac_slh = {
 };
 
 void* subghz_protocol_decoder_faac_slh_alloc(SubGhzEnvironment* environment) {
+    UNUSED(environment);
     SubGhzProtocolDecoderFaacSLH* instance = malloc(sizeof(SubGhzProtocolDecoderFaacSLH));
     instance->base.protocol = &subghz_protocol_faac_slh;
     instance->generic.protocol_name = instance->base.protocol->name;
@@ -111,7 +112,7 @@ void subghz_protocol_decoder_faac_slh_feed(void* context, bool level, uint32_t d
         break;
     case FaacSLHDecoderStepSaveDuration:
         if(level) {
-            if(duration >= (subghz_protocol_faac_slh_const.te_short * 3 +
+            if(duration >= ((uint32_t)subghz_protocol_faac_slh_const.te_short * 3 +
                             subghz_protocol_faac_slh_const.te_delta)) {
                 instance->decoder.parser_step = FaacSLHDecoderStepFoundPreambula;
                 if(instance->decoder.decode_count_bit >=
diff --git a/lib/subghz/protocols/firefly.c b/lib/subghz/protocols/firefly.c
index e872d558..21047a30 100644
--- a/lib/subghz/protocols/firefly.c
+++ b/lib/subghz/protocols/firefly.c
@@ -6,12 +6,6 @@
 #include "../blocks/generic.h"
 #include "../blocks/math.h"
 
-/*
- * Help
- * https://phreakerclub.com/447
- *
- */
-
 #define TAG "SubGhzProtocolFirefly"
 
 #define DIP_PATTERN "%c%c%c%c%c%c%c%c%c%c"
@@ -81,6 +75,7 @@ const SubGhzProtocol subghz_protocol_firefly = {
 };
 
 void* subghz_protocol_encoder_firefly_alloc(SubGhzEnvironment* environment) {
+    UNUSED(environment);
     SubGhzProtocolEncoderFirefly* instance = malloc(sizeof(SubGhzProtocolEncoderFirefly));
 
     instance->base.protocol = &subghz_protocol_firefly;
@@ -199,6 +194,7 @@ LevelDuration subghz_protocol_encoder_firefly_yield(void* context) {
 }
 
 void* subghz_protocol_decoder_firefly_alloc(SubGhzEnvironment* environment) {
+    UNUSED(environment);
     SubGhzProtocolDecoderFirefly* instance = malloc(sizeof(SubGhzProtocolDecoderFirefly));
     instance->base.protocol = &subghz_protocol_firefly;
     instance->generic.protocol_name = instance->base.protocol->name;
diff --git a/lib/subghz/protocols/gate_tx.c b/lib/subghz/protocols/gate_tx.c
index dd6548a2..5f124c37 100644
--- a/lib/subghz/protocols/gate_tx.c
+++ b/lib/subghz/protocols/gate_tx.c
@@ -69,6 +69,7 @@ const SubGhzProtocol subghz_protocol_gate_tx = {
 };
 
 void* subghz_protocol_encoder_gate_tx_alloc(SubGhzEnvironment* environment) {
+    UNUSED(environment);
     SubGhzProtocolEncoderGateTx* instance = malloc(sizeof(SubGhzProtocolEncoderGateTx));
 
     instance->base.protocol = &subghz_protocol_gate_tx;
@@ -175,6 +176,7 @@ LevelDuration subghz_protocol_encoder_gate_tx_yield(void* context) {
 }
 
 void* subghz_protocol_decoder_gate_tx_alloc(SubGhzEnvironment* environment) {
+    UNUSED(environment);
     SubGhzProtocolDecoderGateTx* instance = malloc(sizeof(SubGhzProtocolDecoderGateTx));
     instance->base.protocol = &subghz_protocol_gate_tx;
     instance->generic.protocol_name = instance->base.protocol->name;
@@ -218,7 +220,7 @@ void subghz_protocol_decoder_gate_tx_feed(void* context, bool level, uint32_t du
         break;
     case GateTXDecoderStepSaveDuration:
         if(!level) {
-            if(duration >= (subghz_protocol_gate_tx_const.te_short * 10 +
+            if(duration >= ((uint32_t)subghz_protocol_gate_tx_const.te_short * 10 +
                             subghz_protocol_gate_tx_const.te_delta)) {
                 instance->decoder.parser_step = GateTXDecoderStepFoundStartBit;
                 if(instance->decoder.decode_count_bit >=
diff --git a/lib/subghz/protocols/holtek.c b/lib/subghz/protocols/holtek.c
new file mode 100644
index 00000000..174d023e
--- /dev/null
+++ b/lib/subghz/protocols/holtek.c
@@ -0,0 +1,360 @@
+#include "holtek.h"
+
+#include "../blocks/const.h"
+#include "../blocks/decoder.h"
+#include "../blocks/encoder.h"
+#include "../blocks/generic.h"
+#include "../blocks/math.h"
+
+/*
+ * Help
+ * https://pdf1.alldatasheet.com/datasheet-pdf/view/82103/HOLTEK/HT640.html
+ * https://fccid.io/OJM-CMD-HHLR-XXXA
+ *
+ */
+
+#define TAG "SubGhzProtocolHoltek"
+
+#define HOLTEK_HEADER_MASK 0xF000000000
+#define HOLTEK_HEADER 0x5000000000
+
+static const SubGhzBlockConst subghz_protocol_holtek_const = {
+    .te_short = 430,
+    .te_long = 870,
+    .te_delta = 100,
+    .min_count_bit_for_found = 40,
+};
+
+struct SubGhzProtocolDecoderHoltek {
+    SubGhzProtocolDecoderBase base;
+
+    SubGhzBlockDecoder decoder;
+    SubGhzBlockGeneric generic;
+};
+
+struct SubGhzProtocolEncoderHoltek {
+    SubGhzProtocolEncoderBase base;
+
+    SubGhzProtocolBlockEncoder encoder;
+    SubGhzBlockGeneric generic;
+};
+
+typedef enum {
+    HoltekDecoderStepReset = 0,
+    HoltekDecoderStepFoundStartBit,
+    HoltekDecoderStepSaveDuration,
+    HoltekDecoderStepCheckDuration,
+} HoltekDecoderStep;
+
+const SubGhzProtocolDecoder subghz_protocol_holtek_decoder = {
+    .alloc = subghz_protocol_decoder_holtek_alloc,
+    .free = subghz_protocol_decoder_holtek_free,
+
+    .feed = subghz_protocol_decoder_holtek_feed,
+    .reset = subghz_protocol_decoder_holtek_reset,
+
+    .get_hash_data = subghz_protocol_decoder_holtek_get_hash_data,
+    .serialize = subghz_protocol_decoder_holtek_serialize,
+    .deserialize = subghz_protocol_decoder_holtek_deserialize,
+    .get_string = subghz_protocol_decoder_holtek_get_string,
+};
+
+const SubGhzProtocolEncoder subghz_protocol_holtek_encoder = {
+    .alloc = subghz_protocol_encoder_holtek_alloc,
+    .free = subghz_protocol_encoder_holtek_free,
+
+    .deserialize = subghz_protocol_encoder_holtek_deserialize,
+    .stop = subghz_protocol_encoder_holtek_stop,
+    .yield = subghz_protocol_encoder_holtek_yield,
+};
+
+const SubGhzProtocol subghz_protocol_holtek = {
+    .name = SUBGHZ_PROTOCOL_HOLTEK_NAME,
+    .type = SubGhzProtocolTypeStatic,
+    .flag = SubGhzProtocolFlag_433 | SubGhzProtocolFlag_868 | SubGhzProtocolFlag_315 |
+            SubGhzProtocolFlag_AM | SubGhzProtocolFlag_Decodable | SubGhzProtocolFlag_Load |
+            SubGhzProtocolFlag_Save | SubGhzProtocolFlag_Send,
+
+    .decoder = &subghz_protocol_holtek_decoder,
+    .encoder = &subghz_protocol_holtek_encoder,
+};
+
+void* subghz_protocol_encoder_holtek_alloc(SubGhzEnvironment* environment) {
+    UNUSED(environment);
+    SubGhzProtocolEncoderHoltek* instance = malloc(sizeof(SubGhzProtocolEncoderHoltek));
+
+    instance->base.protocol = &subghz_protocol_holtek;
+    instance->generic.protocol_name = instance->base.protocol->name;
+
+    instance->encoder.repeat = 10;
+    instance->encoder.size_upload = 128;
+    instance->encoder.upload = malloc(instance->encoder.size_upload * sizeof(LevelDuration));
+    instance->encoder.is_runing = false;
+    return instance;
+}
+
+void subghz_protocol_encoder_holtek_free(void* context) {
+    furi_assert(context);
+    SubGhzProtocolEncoderHoltek* instance = context;
+    free(instance->encoder.upload);
+    free(instance);
+}
+
+/**
+ * Generating an upload from data.
+ * @param instance Pointer to a SubGhzProtocolEncoderHoltek instance
+ * @return true On success
+ */
+static bool subghz_protocol_encoder_holtek_get_upload(SubGhzProtocolEncoderHoltek* instance) {
+    furi_assert(instance);
+
+    size_t index = 0;
+    size_t size_upload = (instance->generic.data_count_bit * 2) + 2;
+    if(size_upload > instance->encoder.size_upload) {
+        FURI_LOG_E(TAG, "Size upload exceeds allocated encoder buffer.");
+        return false;
+    } else {
+        instance->encoder.size_upload = size_upload;
+    }
+
+    //Send header
+    instance->encoder.upload[index++] =
+        level_duration_make(false, (uint32_t)subghz_protocol_holtek_const.te_short * 36);
+    //Send start bit
+    instance->encoder.upload[index++] =
+        level_duration_make(true, (uint32_t)subghz_protocol_holtek_const.te_short);
+    //Send key data
+    for(uint8_t i = instance->generic.data_count_bit; i > 0; i--) {
+        if(bit_read(instance->generic.data, i - 1)) {
+            //send bit 1
+            instance->encoder.upload[index++] =
+                level_duration_make(false, (uint32_t)subghz_protocol_holtek_const.te_long);
+            instance->encoder.upload[index++] =
+                level_duration_make(true, (uint32_t)subghz_protocol_holtek_const.te_short);
+        } else {
+            //send bit 0
+            instance->encoder.upload[index++] =
+                level_duration_make(false, (uint32_t)subghz_protocol_holtek_const.te_short);
+            instance->encoder.upload[index++] =
+                level_duration_make(true, (uint32_t)subghz_protocol_holtek_const.te_long);
+        }
+    }
+    return true;
+}
+
+bool subghz_protocol_encoder_holtek_deserialize(void* context, FlipperFormat* flipper_format) {
+    furi_assert(context);
+    SubGhzProtocolEncoderHoltek* instance = context;
+    bool res = false;
+    do {
+        if(!subghz_block_generic_deserialize(&instance->generic, flipper_format)) {
+            FURI_LOG_E(TAG, "Deserialize error");
+            break;
+        }
+
+        //optional parameter parameter
+        flipper_format_read_uint32(
+            flipper_format, "Repeat", (uint32_t*)&instance->encoder.repeat, 1);
+
+        subghz_protocol_encoder_holtek_get_upload(instance);
+        instance->encoder.is_runing = true;
+
+        res = true;
+    } while(false);
+
+    return res;
+}
+
+void subghz_protocol_encoder_holtek_stop(void* context) {
+    SubGhzProtocolEncoderHoltek* instance = context;
+    instance->encoder.is_runing = false;
+}
+
+LevelDuration subghz_protocol_encoder_holtek_yield(void* context) {
+    SubGhzProtocolEncoderHoltek* instance = context;
+
+    if(instance->encoder.repeat == 0 || !instance->encoder.is_runing) {
+        instance->encoder.is_runing = false;
+        return level_duration_reset();
+    }
+
+    LevelDuration ret = instance->encoder.upload[instance->encoder.front];
+
+    if(++instance->encoder.front == instance->encoder.size_upload) {
+        instance->encoder.repeat--;
+        instance->encoder.front = 0;
+    }
+
+    return ret;
+}
+
+void* subghz_protocol_decoder_holtek_alloc(SubGhzEnvironment* environment) {
+    UNUSED(environment);
+    SubGhzProtocolDecoderHoltek* instance = malloc(sizeof(SubGhzProtocolDecoderHoltek));
+    instance->base.protocol = &subghz_protocol_holtek;
+    instance->generic.protocol_name = instance->base.protocol->name;
+    return instance;
+}
+
+void subghz_protocol_decoder_holtek_free(void* context) {
+    furi_assert(context);
+    SubGhzProtocolDecoderHoltek* instance = context;
+    free(instance);
+}
+
+void subghz_protocol_decoder_holtek_reset(void* context) {
+    furi_assert(context);
+    SubGhzProtocolDecoderHoltek* instance = context;
+    instance->decoder.parser_step = HoltekDecoderStepReset;
+}
+
+void subghz_protocol_decoder_holtek_feed(void* context, bool level, uint32_t duration) {
+    furi_assert(context);
+    SubGhzProtocolDecoderHoltek* instance = context;
+
+    switch(instance->decoder.parser_step) {
+    case HoltekDecoderStepReset:
+        if((!level) && (DURATION_DIFF(duration, subghz_protocol_holtek_const.te_short * 36) <
+                        subghz_protocol_holtek_const.te_delta * 36)) {
+            //Found Preambula
+            instance->decoder.parser_step = HoltekDecoderStepFoundStartBit;
+        }
+        break;
+    case HoltekDecoderStepFoundStartBit:
+        if((level) && (DURATION_DIFF(duration, subghz_protocol_holtek_const.te_short) <
+                       subghz_protocol_holtek_const.te_delta)) {
+            //Found StartBit
+            instance->decoder.parser_step = HoltekDecoderStepSaveDuration;
+            instance->decoder.decode_data = 0;
+            instance->decoder.decode_count_bit = 0;
+        } else {
+            instance->decoder.parser_step = HoltekDecoderStepReset;
+        }
+        break;
+    case HoltekDecoderStepSaveDuration:
+        //save duration
+        if(!level) {
+            if(duration >= ((uint32_t)subghz_protocol_holtek_const.te_short * 10 +
+                            subghz_protocol_holtek_const.te_delta)) {
+                instance->decoder.parser_step = HoltekDecoderStepSaveDuration;
+                if(instance->decoder.decode_count_bit ==
+                   subghz_protocol_holtek_const.min_count_bit_for_found) {
+                    if((instance->decoder.decode_data & HOLTEK_HEADER_MASK) == HOLTEK_HEADER) {
+                        instance->generic.data = instance->decoder.decode_data;
+                        instance->generic.data_count_bit = instance->decoder.decode_count_bit;
+
+                        if(instance->base.callback)
+                            instance->base.callback(&instance->base, instance->base.context);
+                    }
+                }
+                instance->decoder.decode_data = 0;
+                instance->decoder.decode_count_bit = 0;
+                instance->decoder.parser_step = HoltekDecoderStepFoundStartBit;
+                break;
+            } else {
+                instance->decoder.te_last = duration;
+
+                instance->decoder.parser_step = HoltekDecoderStepCheckDuration;
+            }
+        } else {
+            instance->decoder.parser_step = HoltekDecoderStepReset;
+        }
+        break;
+    case HoltekDecoderStepCheckDuration:
+        if(level) {
+            if((DURATION_DIFF(instance->decoder.te_last, subghz_protocol_holtek_const.te_short) <
+                subghz_protocol_holtek_const.te_delta) &&
+               (DURATION_DIFF(duration, subghz_protocol_holtek_const.te_long) <
+                subghz_protocol_holtek_const.te_delta * 2)) {
+                subghz_protocol_blocks_add_bit(&instance->decoder, 0);
+                instance->decoder.parser_step = HoltekDecoderStepSaveDuration;
+            } else if(
+                (DURATION_DIFF(instance->decoder.te_last, subghz_protocol_holtek_const.te_long) <
+                 subghz_protocol_holtek_const.te_delta * 2) &&
+                (DURATION_DIFF(duration, subghz_protocol_holtek_const.te_short) <
+                 subghz_protocol_holtek_const.te_delta)) {
+                subghz_protocol_blocks_add_bit(&instance->decoder, 1);
+                instance->decoder.parser_step = HoltekDecoderStepSaveDuration;
+            } else {
+                instance->decoder.parser_step = HoltekDecoderStepReset;
+            }
+        } else {
+            instance->decoder.parser_step = HoltekDecoderStepReset;
+        }
+        break;
+    }
+}
+
+/** 
+ * Analysis of received data
+ * @param instance Pointer to a SubGhzBlockGeneric* instance
+ */
+static void subghz_protocol_holtek_check_remote_controller(SubGhzBlockGeneric* instance) {
+    if((instance->data & HOLTEK_HEADER_MASK) == HOLTEK_HEADER) {
+        instance->serial =
+            subghz_protocol_blocks_reverse_key((instance->data >> 16) & 0xFFFFF, 20);
+        uint16_t btn = instance->data & 0xFFFF;
+        if((btn & 0xf) != 0xA) {
+            instance->btn = 0x1 << 4 | (btn & 0xF);
+        } else if(((btn >> 4) & 0xF) != 0xA) {
+            instance->btn = 0x2 << 4 | ((btn >> 4) & 0xF);
+        } else if(((btn >> 8) & 0xF) != 0xA) {
+            instance->btn = 0x3 << 4 | ((btn >> 8) & 0xF);
+        } else if(((btn >> 12) & 0xF) != 0xA) {
+            instance->btn = 0x4 << 4 | ((btn >> 12) & 0xF);
+        } else {
+            instance->btn = 0;
+        }
+    } else {
+        instance->serial = 0;
+        instance->btn = 0;
+        instance->cnt = 0;
+    }
+}
+
+uint8_t subghz_protocol_decoder_holtek_get_hash_data(void* context) {
+    furi_assert(context);
+    SubGhzProtocolDecoderHoltek* instance = context;
+    return subghz_protocol_blocks_get_hash_data(
+        &instance->decoder, (instance->decoder.decode_count_bit / 8) + 1);
+}
+
+bool subghz_protocol_decoder_holtek_serialize(
+    void* context,
+    FlipperFormat* flipper_format,
+    uint32_t frequency,
+    FuriHalSubGhzPreset preset) {
+    furi_assert(context);
+    SubGhzProtocolDecoderHoltek* instance = context;
+    return subghz_block_generic_serialize(&instance->generic, flipper_format, frequency, preset);
+}
+
+bool subghz_protocol_decoder_holtek_deserialize(void* context, FlipperFormat* flipper_format) {
+    furi_assert(context);
+    SubGhzProtocolDecoderHoltek* instance = context;
+    return subghz_block_generic_deserialize(&instance->generic, flipper_format);
+}
+
+void subghz_protocol_decoder_holtek_get_string(void* context, string_t output) {
+    furi_assert(context);
+    SubGhzProtocolDecoderHoltek* instance = context;
+    subghz_protocol_holtek_check_remote_controller(&instance->generic);
+
+    string_cat_printf(
+        output,
+        "%s %dbit\r\n"
+        "Key:0x%lX%08lX\r\n"
+        "Sn:0x%05lX BTN:%X ",
+        instance->generic.protocol_name,
+        instance->generic.data_count_bit,
+        (uint32_t)((instance->generic.data >> 32) & 0xFFFFFFFF),
+        (uint32_t)(instance->generic.data & 0xFFFFFFFF),
+        instance->generic.serial,
+        instance->generic.btn >> 4);
+
+    if((instance->generic.btn & 0xF) == 0xE) {
+        string_cat_printf(output, "ON\r\n");
+    } else if(((instance->generic.btn & 0xF) == 0xB)) {
+        string_cat_printf(output, "OFF\r\n");
+    }
+}
diff --git a/lib/subghz/protocols/holtek.h b/lib/subghz/protocols/holtek.h
new file mode 100644
index 00000000..0110fdd3
--- /dev/null
+++ b/lib/subghz/protocols/holtek.h
@@ -0,0 +1,109 @@
+#pragma once
+
+#include "base.h"
+
+#define SUBGHZ_PROTOCOL_HOLTEK_NAME "Holtek"
+
+typedef struct SubGhzProtocolDecoderHoltek SubGhzProtocolDecoderHoltek;
+typedef struct SubGhzProtocolEncoderHoltek SubGhzProtocolEncoderHoltek;
+
+extern const SubGhzProtocolDecoder subghz_protocol_holtek_decoder;
+extern const SubGhzProtocolEncoder subghz_protocol_holtek_encoder;
+extern const SubGhzProtocol subghz_protocol_holtek;
+
+/**
+ * Allocate SubGhzProtocolEncoderHoltek.
+ * @param environment Pointer to a SubGhzEnvironment instance
+ * @return SubGhzProtocolEncoderHoltek* pointer to a SubGhzProtocolEncoderHoltek instance
+ */
+void* subghz_protocol_encoder_holtek_alloc(SubGhzEnvironment* environment);
+
+/**
+ * Free SubGhzProtocolEncoderHoltek.
+ * @param context Pointer to a SubGhzProtocolEncoderHoltek instance
+ */
+void subghz_protocol_encoder_holtek_free(void* context);
+
+/**
+ * Deserialize and generating an upload to send.
+ * @param context Pointer to a SubGhzProtocolEncoderHoltek instance
+ * @param flipper_format Pointer to a FlipperFormat instance
+ * @return true On success
+ */
+bool subghz_protocol_encoder_holtek_deserialize(void* context, FlipperFormat* flipper_format);
+
+/**
+ * Forced transmission stop.
+ * @param context Pointer to a SubGhzProtocolEncoderHoltek instance
+ */
+void subghz_protocol_encoder_holtek_stop(void* context);
+
+/**
+ * Getting the level and duration of the upload to be loaded into DMA.
+ * @param context Pointer to a SubGhzProtocolEncoderHoltek instance
+ * @return LevelDuration 
+ */
+LevelDuration subghz_protocol_encoder_holtek_yield(void* context);
+
+/**
+ * Allocate SubGhzProtocolDecoderHoltek.
+ * @param environment Pointer to a SubGhzEnvironment instance
+ * @return SubGhzProtocolDecoderHoltek* pointer to a SubGhzProtocolDecoderHoltek instance
+ */
+void* subghz_protocol_decoder_holtek_alloc(SubGhzEnvironment* environment);
+
+/**
+ * Free SubGhzProtocolDecoderHoltek.
+ * @param context Pointer to a SubGhzProtocolDecoderHoltek instance
+ */
+void subghz_protocol_decoder_holtek_free(void* context);
+
+/**
+ * Reset decoder SubGhzProtocolDecoderHoltek.
+ * @param context Pointer to a SubGhzProtocolDecoderHoltek instance
+ */
+void subghz_protocol_decoder_holtek_reset(void* context);
+
+/**
+ * Parse a raw sequence of levels and durations received from the air.
+ * @param context Pointer to a SubGhzProtocolDecoderHoltek instance
+ * @param level Signal level true-high false-low
+ * @param duration Duration of this level in, us
+ */
+void subghz_protocol_decoder_holtek_feed(void* context, bool level, uint32_t duration);
+
+/**
+ * Getting the hash sum of the last randomly received parcel.
+ * @param context Pointer to a SubGhzProtocolDecoderHoltek instance
+ * @return hash Hash sum
+ */
+uint8_t subghz_protocol_decoder_holtek_get_hash_data(void* context);
+
+/**
+ * Serialize data SubGhzProtocolDecoderHoltek.
+ * @param context Pointer to a SubGhzProtocolDecoderHoltek instance
+ * @param flipper_format Pointer to a FlipperFormat instance
+ * @param frequency The frequency at which the signal was received, Hz
+ * @param preset The modulation on which the signal was received, FuriHalSubGhzPreset
+ * @return true On success
+ */
+bool subghz_protocol_decoder_holtek_serialize(
+    void* context,
+    FlipperFormat* flipper_format,
+    uint32_t frequency,
+    FuriHalSubGhzPreset preset);
+
+/**
+ * Deserialize data SubGhzProtocolDecoderHoltek.
+ * @param context Pointer to a SubGhzProtocolDecoderHoltek instance
+ * @param flipper_format Pointer to a FlipperFormat instance
+ * @return true On success
+ */
+bool subghz_protocol_decoder_holtek_deserialize(void* context, FlipperFormat* flipper_format);
+
+/**
+ * Getting a textual representation of the received data.
+ * @param context Pointer to a SubGhzProtocolDecoderHoltek instance
+ * @param output Resulting text
+ */
+void subghz_protocol_decoder_holtek_get_string(void* context, string_t output);
diff --git a/lib/subghz/protocols/hormann.c b/lib/subghz/protocols/hormann.c
index 7a3fd233..20ff50fc 100644
--- a/lib/subghz/protocols/hormann.c
+++ b/lib/subghz/protocols/hormann.c
@@ -72,6 +72,7 @@ const SubGhzProtocol subghz_protocol_hormann = {
 };
 
 void* subghz_protocol_encoder_hormann_alloc(SubGhzEnvironment* environment) {
+    UNUSED(environment);
     SubGhzProtocolEncoderHormann* instance = malloc(sizeof(SubGhzProtocolEncoderHormann));
 
     instance->base.protocol = &subghz_protocol_hormann;
@@ -191,6 +192,7 @@ LevelDuration subghz_protocol_encoder_hormann_yield(void* context) {
 }
 
 void* subghz_protocol_decoder_hormann_alloc(SubGhzEnvironment* environment) {
+    UNUSED(environment);
     SubGhzProtocolDecoderHormann* instance = malloc(sizeof(SubGhzProtocolDecoderHormann));
     instance->base.protocol = &subghz_protocol_hormann;
     instance->generic.protocol_name = instance->base.protocol->name;
diff --git a/lib/subghz/protocols/ido.c b/lib/subghz/protocols/ido.c
index d2962435..93693b68 100644
--- a/lib/subghz/protocols/ido.c
+++ b/lib/subghz/protocols/ido.c
@@ -68,6 +68,7 @@ const SubGhzProtocol subghz_protocol_ido = {
 };
 
 void* subghz_protocol_decoder_ido_alloc(SubGhzEnvironment* environment) {
+    UNUSED(environment);
     SubGhzProtocolDecoderIDo* instance = malloc(sizeof(SubGhzProtocolDecoderIDo));
     instance->base.protocol = &subghz_protocol_ido;
     instance->generic.protocol_name = instance->base.protocol->name;
@@ -111,8 +112,8 @@ void subghz_protocol_decoder_ido_feed(void* context, bool level, uint32_t durati
         break;
     case IDoDecoderStepSaveDuration:
         if(level) {
-            if(duration >=
-               (subghz_protocol_ido_const.te_short * 5 + subghz_protocol_ido_const.te_delta)) {
+            if(duration >= ((uint32_t)subghz_protocol_ido_const.te_short * 5 +
+                            subghz_protocol_ido_const.te_delta)) {
                 instance->decoder.parser_step = IDoDecoderStepFoundPreambula;
                 if(instance->decoder.decode_count_bit >=
                    subghz_protocol_ido_const.min_count_bit_for_found) {
diff --git a/lib/subghz/protocols/ido.h b/lib/subghz/protocols/ido.h
index c53a1593..266529e1 100644
--- a/lib/subghz/protocols/ido.h
+++ b/lib/subghz/protocols/ido.h
@@ -72,4 +72,4 @@ bool subghz_protocol_decoder_ido_deserialize(void* context, FlipperFormat* flipp
  * @param context Pointer to a SubGhzProtocolDecoderIDo instance
  * @param output Resulting text
  */
-void subghz_protocol_decoder_ido_get_string(void* context, string_t output);
\ No newline at end of file
+void subghz_protocol_decoder_ido_get_string(void* context, string_t output);
diff --git a/lib/subghz/protocols/keeloq.c b/lib/subghz/protocols/keeloq.c
index 975cd29c..566ae576 100644
--- a/lib/subghz/protocols/keeloq.c
+++ b/lib/subghz/protocols/keeloq.c
@@ -11,7 +11,7 @@
 #include "../blocks/generic.h"
 #include "../blocks/math.h"
 
-#define TAG "SubGhzProtocolkeeloq"
+#define TAG "SubGhzProtocolKeeloq"
 
 static const SubGhzBlockConst subghz_protocol_keeloq_const = {
     .te_short = 400,
@@ -384,7 +384,7 @@ void subghz_protocol_decoder_keeloq_feed(void* context, bool level, uint32_t dur
         break;
     case KeeloqDecoderStepCheckDuration:
         if(!level) {
-            if(duration >= (subghz_protocol_keeloq_const.te_short * 2 +
+            if(duration >= ((uint32_t)subghz_protocol_keeloq_const.te_short * 2 +
                             subghz_protocol_keeloq_const.te_delta)) {
                 // Found end TX
                 instance->decoder.parser_step = KeeloqDecoderStepReset;
diff --git a/lib/subghz/protocols/keeloq_common.c b/lib/subghz/protocols/keeloq_common.c
index 9dfc0934..7e864a32 100644
--- a/lib/subghz/protocols/keeloq_common.c
+++ b/lib/subghz/protocols/keeloq_common.c
@@ -81,4 +81,4 @@ inline uint64_t
     subghz_protocol_keeloq_common_magic_xor_type1_learning(uint32_t data, uint64_t xor) {
     data &= 0x0FFFFFFF;
     return (((uint64_t)data << 32) | data) ^ xor;
-}
\ No newline at end of file
+}
diff --git a/lib/subghz/protocols/kia.c b/lib/subghz/protocols/kia.c
index f623a61d..5a89934b 100644
--- a/lib/subghz/protocols/kia.c
+++ b/lib/subghz/protocols/kia.c
@@ -70,6 +70,7 @@ const SubGhzProtocol subghz_protocol_kia = {
 };
 
 void* subghz_protocol_decoder_kia_alloc(SubGhzEnvironment* environment) {
+    UNUSED(environment);
     SubGhzProtocolDecoderKIA* instance = malloc(sizeof(SubGhzProtocolDecoderKIA));
     instance->base.protocol = &subghz_protocol_kia;
     instance->generic.protocol_name = instance->base.protocol->name;
@@ -141,7 +142,7 @@ void subghz_protocol_decoder_kia_feed(void* context, bool level, uint32_t durati
     case KIADecoderStepSaveDuration:
         if(level) {
             if(duration >=
-               (subghz_protocol_kia_const.te_long + subghz_protocol_kia_const.te_delta * 2)) {
+               (uint32_t)(subghz_protocol_kia_const.te_long + subghz_protocol_kia_const.te_delta * 2)) {
                 //Found stop bit
                 instance->decoder.parser_step = KIADecoderStepReset;
                 if(instance->decoder.decode_count_bit >=
diff --git a/lib/subghz/protocols/megacode.c b/lib/subghz/protocols/megacode.c
new file mode 100644
index 00000000..48a6908e
--- /dev/null
+++ b/lib/subghz/protocols/megacode.c
@@ -0,0 +1,413 @@
+#include "megacode.h"
+
+#include "../blocks/const.h"
+#include "../blocks/decoder.h"
+#include "../blocks/encoder.h"
+#include "../blocks/generic.h"
+#include "../blocks/math.h"
+
+/*
+ * Help
+ * https://wiki.cuvoodoo.info/doku.php?id=megacode
+ * https://wiki.cuvoodoo.info/lib/exe/fetch.php?media=megacode:megacode_1.pdf
+ * https://fccid.io/EF4ACP00872/Test-Report/Megacode-2-112615.pdf
+ * https://github.com/aaronsp777/megadecoder
+ * https://github.com/rjmendez/Linear_keyfob
+ * https://github.com/j07rdi/Linear_MegaCode_Garage_Remote
+ *
+ */
+
+#define TAG "SubGhzProtocolMegaCode"
+
+static const SubGhzBlockConst subghz_protocol_megacode_const = {
+    .te_short = 1000,
+    .te_long = 1000,
+    .te_delta = 200,
+    .min_count_bit_for_found = 24,
+};
+
+struct SubGhzProtocolDecoderMegaCode {
+    SubGhzProtocolDecoderBase base;
+
+    SubGhzBlockDecoder decoder;
+    SubGhzBlockGeneric generic;
+    uint8_t last_bit;
+};
+
+struct SubGhzProtocolEncoderMegaCode {
+    SubGhzProtocolEncoderBase base;
+
+    SubGhzProtocolBlockEncoder encoder;
+    SubGhzBlockGeneric generic;
+};
+
+typedef enum {
+    MegaCodeDecoderStepReset = 0,
+    MegaCodeDecoderStepFoundStartBit,
+    MegaCodeDecoderStepSaveDuration,
+    MegaCodeDecoderStepCheckDuration,
+} MegaCodeDecoderStep;
+
+const SubGhzProtocolDecoder subghz_protocol_megacode_decoder = {
+    .alloc = subghz_protocol_decoder_megacode_alloc,
+    .free = subghz_protocol_decoder_megacode_free,
+
+    .feed = subghz_protocol_decoder_megacode_feed,
+    .reset = subghz_protocol_decoder_megacode_reset,
+
+    .get_hash_data = subghz_protocol_decoder_megacode_get_hash_data,
+    .serialize = subghz_protocol_decoder_megacode_serialize,
+    .deserialize = subghz_protocol_decoder_megacode_deserialize,
+    .get_string = subghz_protocol_decoder_megacode_get_string,
+};
+
+const SubGhzProtocolEncoder subghz_protocol_megacode_encoder = {
+    .alloc = subghz_protocol_encoder_megacode_alloc,
+    .free = subghz_protocol_encoder_megacode_free,
+
+    .deserialize = subghz_protocol_encoder_megacode_deserialize,
+    .stop = subghz_protocol_encoder_megacode_stop,
+    .yield = subghz_protocol_encoder_megacode_yield,
+};
+
+const SubGhzProtocol subghz_protocol_megacode = {
+    .name = SUBGHZ_PROTOCOL_MEGACODE_NAME,
+    .type = SubGhzProtocolTypeStatic,
+    .flag = SubGhzProtocolFlag_315 | SubGhzProtocolFlag_AM | SubGhzProtocolFlag_Decodable |
+            SubGhzProtocolFlag_Load | SubGhzProtocolFlag_Save | SubGhzProtocolFlag_Send,
+
+    .decoder = &subghz_protocol_megacode_decoder,
+    .encoder = &subghz_protocol_megacode_encoder,
+};
+
+void* subghz_protocol_encoder_megacode_alloc(SubGhzEnvironment* environment) {
+    UNUSED(environment);
+    SubGhzProtocolEncoderMegaCode* instance = malloc(sizeof(SubGhzProtocolEncoderMegaCode));
+
+    instance->base.protocol = &subghz_protocol_megacode;
+    instance->generic.protocol_name = instance->base.protocol->name;
+
+    instance->encoder.repeat = 10;
+    instance->encoder.size_upload = 52;
+    instance->encoder.upload = malloc(instance->encoder.size_upload * sizeof(LevelDuration));
+    instance->encoder.is_runing = false;
+    return instance;
+}
+
+void subghz_protocol_encoder_megacode_free(void* context) {
+    furi_assert(context);
+    SubGhzProtocolEncoderMegaCode* instance = context;
+    free(instance->encoder.upload);
+    free(instance);
+}
+
+/**
+ * Generating an upload from data.
+ * @param instance Pointer to a SubGhzProtocolEncoderMegaCode instance
+ * @return true On success
+ */
+static bool subghz_protocol_encoder_megacode_get_upload(SubGhzProtocolEncoderMegaCode* instance) {
+    furi_assert(instance);
+    uint8_t last_bit = 0;
+    size_t size_upload = (instance->generic.data_count_bit * 2);
+    if(size_upload > instance->encoder.size_upload) {
+        FURI_LOG_E(TAG, "Size upload exceeds allocated encoder buffer.");
+        return false;
+    } else {
+        instance->encoder.size_upload = size_upload;
+    }
+
+    /*
+    * Due to the nature of the protocol
+    *
+    *  00000 1
+    *  _____|-| = 1 becomes
+    * 
+    *  00 1 000
+    *  __|-|___ = 0 becomes
+    * 
+    * it's easier for us to generate an upload backwards
+    */
+
+    size_t index = size_upload - 1;
+
+    // Send end level
+    instance->encoder.upload[index--] =
+        level_duration_make(true, (uint32_t)subghz_protocol_megacode_const.te_short);
+    if(bit_read(instance->generic.data, 0)) {
+        last_bit = 1;
+    } else {
+        last_bit = 0;
+    }
+
+    //Send key data
+    for(uint8_t i = 1; i < instance->generic.data_count_bit; i++) {
+        if(bit_read(instance->generic.data, i)) {
+            //if bit 1
+            instance->encoder.upload[index--] = level_duration_make(
+                false,
+                last_bit ? (uint32_t)subghz_protocol_megacode_const.te_short * 5 :
+                           (uint32_t)subghz_protocol_megacode_const.te_short * 2);
+            last_bit = 1;
+        } else {
+            //if bit 0
+            instance->encoder.upload[index--] = level_duration_make(
+                false,
+                last_bit ? (uint32_t)subghz_protocol_megacode_const.te_short * 8 :
+                           (uint32_t)subghz_protocol_megacode_const.te_short * 5);
+            last_bit = 0;
+        }
+        instance->encoder.upload[index--] =
+            level_duration_make(true, (uint32_t)subghz_protocol_megacode_const.te_short);
+    }
+
+    //Send PT_GUARD
+    if(bit_read(instance->generic.data, 0)) {
+        //if end bit 1
+        instance->encoder.upload[index] =
+            level_duration_make(false, (uint32_t)subghz_protocol_megacode_const.te_short * 11);
+    } else {
+        //if end bit 1
+        instance->encoder.upload[index] =
+            level_duration_make(false, (uint32_t)subghz_protocol_megacode_const.te_short * 14);
+    }
+
+    return true;
+}
+
+bool subghz_protocol_encoder_megacode_deserialize(void* context, FlipperFormat* flipper_format) {
+    furi_assert(context);
+    SubGhzProtocolEncoderMegaCode* instance = context;
+    bool res = false;
+    do {
+        if(!subghz_block_generic_deserialize(&instance->generic, flipper_format)) {
+            FURI_LOG_E(TAG, "Deserialize error");
+            break;
+        }
+
+        //optional parameter parameter
+        flipper_format_read_uint32(
+            flipper_format, "Repeat", (uint32_t*)&instance->encoder.repeat, 1);
+
+        subghz_protocol_encoder_megacode_get_upload(instance);
+        instance->encoder.is_runing = true;
+
+        res = true;
+    } while(false);
+
+    return res;
+}
+
+void subghz_protocol_encoder_megacode_stop(void* context) {
+    SubGhzProtocolEncoderMegaCode* instance = context;
+    instance->encoder.is_runing = false;
+}
+
+LevelDuration subghz_protocol_encoder_megacode_yield(void* context) {
+    SubGhzProtocolEncoderMegaCode* instance = context;
+
+    if(instance->encoder.repeat == 0 || !instance->encoder.is_runing) {
+        instance->encoder.is_runing = false;
+        return level_duration_reset();
+    }
+
+    LevelDuration ret = instance->encoder.upload[instance->encoder.front];
+
+    if(++instance->encoder.front == instance->encoder.size_upload) {
+        instance->encoder.repeat--;
+        instance->encoder.front = 0;
+    }
+
+    return ret;
+}
+
+void* subghz_protocol_decoder_megacode_alloc(SubGhzEnvironment* environment) {
+    UNUSED(environment);
+    SubGhzProtocolDecoderMegaCode* instance = malloc(sizeof(SubGhzProtocolDecoderMegaCode));
+    instance->base.protocol = &subghz_protocol_megacode;
+    instance->generic.protocol_name = instance->base.protocol->name;
+    return instance;
+}
+
+void subghz_protocol_decoder_megacode_free(void* context) {
+    furi_assert(context);
+    SubGhzProtocolDecoderMegaCode* instance = context;
+    free(instance);
+}
+
+void subghz_protocol_decoder_megacode_reset(void* context) {
+    furi_assert(context);
+    SubGhzProtocolDecoderMegaCode* instance = context;
+    instance->decoder.parser_step = MegaCodeDecoderStepReset;
+}
+
+void subghz_protocol_decoder_megacode_feed(void* context, bool level, uint32_t duration) {
+    furi_assert(context);
+    SubGhzProtocolDecoderMegaCode* instance = context;
+    switch(instance->decoder.parser_step) {
+    case MegaCodeDecoderStepReset:
+        if((!level) && (DURATION_DIFF(duration, subghz_protocol_megacode_const.te_short * 13) <
+                        subghz_protocol_megacode_const.te_delta * 15)) { //10..16ms
+            //Found header MegaCode
+            instance->decoder.parser_step = MegaCodeDecoderStepFoundStartBit;
+        }
+        break;
+    case MegaCodeDecoderStepFoundStartBit:
+        if(level && (DURATION_DIFF(duration, subghz_protocol_megacode_const.te_short) <
+                     subghz_protocol_megacode_const.te_delta)) {
+            //Found start bit MegaCode
+            instance->decoder.parser_step = MegaCodeDecoderStepSaveDuration;
+            instance->decoder.decode_data = 0;
+            instance->decoder.decode_count_bit = 0;
+            subghz_protocol_blocks_add_bit(&instance->decoder, 1);
+            instance->last_bit = 1;
+
+        } else {
+            instance->decoder.parser_step = MegaCodeDecoderStepReset;
+        }
+        break;
+    case MegaCodeDecoderStepSaveDuration:
+        if(!level) { //save interval
+            if(duration >= (subghz_protocol_megacode_const.te_short * 10)) {
+                instance->decoder.parser_step = MegaCodeDecoderStepReset;
+                if(instance->decoder.decode_count_bit >=
+                   subghz_protocol_megacode_const.min_count_bit_for_found) {
+                    instance->generic.data = instance->decoder.decode_data;
+                    instance->generic.data_count_bit = instance->decoder.decode_count_bit;
+
+                    if(instance->base.callback)
+                        instance->base.callback(&instance->base, instance->base.context);
+                }
+                break;
+            }
+
+            if(!instance->last_bit) {
+                instance->decoder.te_last = duration - subghz_protocol_megacode_const.te_short * 3;
+            } else {
+                instance->decoder.te_last = duration;
+            }
+            instance->decoder.parser_step = MegaCodeDecoderStepCheckDuration;
+        } else {
+            instance->decoder.parser_step = MegaCodeDecoderStepReset;
+        }
+        break;
+    case MegaCodeDecoderStepCheckDuration:
+        if(level) {
+            if((DURATION_DIFF(
+                    instance->decoder.te_last, subghz_protocol_megacode_const.te_short * 5) <
+                subghz_protocol_megacode_const.te_delta * 5) &&
+               (DURATION_DIFF(duration, subghz_protocol_megacode_const.te_short) <
+                subghz_protocol_megacode_const.te_delta)) {
+                subghz_protocol_blocks_add_bit(&instance->decoder, 1);
+                instance->last_bit = 1;
+                instance->decoder.parser_step = MegaCodeDecoderStepSaveDuration;
+            } else if(
+                (DURATION_DIFF(
+                     instance->decoder.te_last, subghz_protocol_megacode_const.te_short * 2) <
+                 subghz_protocol_megacode_const.te_delta * 2) &&
+                (DURATION_DIFF(duration, subghz_protocol_megacode_const.te_short) <
+                 subghz_protocol_megacode_const.te_delta)) {
+                subghz_protocol_blocks_add_bit(&instance->decoder, 0);
+                instance->last_bit = 0;
+                instance->decoder.parser_step = MegaCodeDecoderStepSaveDuration;
+            } else
+                instance->decoder.parser_step = MegaCodeDecoderStepReset;
+        } else {
+            instance->decoder.parser_step = MegaCodeDecoderStepReset;
+        }
+        break;
+    }
+}
+
+/** 
+ * Analysis of received data
+ * @param instance Pointer to a SubGhzBlockGeneric* instance
+ */
+static void subghz_protocol_megacode_check_remote_controller(SubGhzBlockGeneric* instance) {
+    /*
+    * Short: 1000 µs
+    * Long: 1000 µs
+    * Gap: 11000 .. 14000 µs
+    * A Linear Megacode transmission consists of 24 bit frames starting with 
+    * the most significant bit and ending with the least. Each of the 24 bit 
+    * frames is 6 milliseconds wide and always contains a single 1 millisecond 
+    * pulse. A frame with more than 1 pulse or a frame with no pulse is invalid 
+    * and a receiver should reset and begin watching for another start bit. 
+    * Start bit is always 1.
+    * 
+    * 
+    * Example (I created with my own remote):
+    * Remote “A” has the code “17316”, a Facility Code of “3”, and a single button.
+    * Start bit (S) = 1
+    * Facility Code 3 (F) = 0011
+    * Remote Code (Key) 17316 = 43A4 = 0100001110100100
+    * Button (Btn) 1 = 001
+    *          S  F        Key         Btn
+    * Result = 1|0011|0100001110100100|001
+    * 
+    *  00000 1
+    *  _____|-| = 1 becomes
+    * 
+    *  00 1 000
+    *  __|-|___ = 0 becomes
+    * 
+    * The device needs to transmit with a 9000 µs gap between retransmissions:
+    * 000001 001000 001000 000001 000001 001000 000001 001000 001000 001000 001000 000001
+    * 000001 000001 001000 000001 001000 001000 000001 001000 001000 001000 001000 000001
+    * wait 9000 µs
+    * 000001 001000 001000 000001 000001 001000 000001 001000 001000 001000 001000 000001
+    * 000001 000001 001000 000001 001000 001000 000001 001000 001000 001000 001000 000001
+    * 
+    */
+    if((instance->data >> 23) == 1) {
+        instance->serial = (instance->data >> 3) & 0xFFFF;
+        instance->btn = instance->data & 0b111;
+        instance->cnt = (instance->data >> 19) & 0b1111;
+    } else {
+        instance->serial = 0;
+        instance->btn = 0;
+        instance->cnt = 0;
+    }
+}
+
+uint8_t subghz_protocol_decoder_megacode_get_hash_data(void* context) {
+    furi_assert(context);
+    SubGhzProtocolDecoderMegaCode* instance = context;
+    return subghz_protocol_blocks_get_hash_data(
+        &instance->decoder, (instance->decoder.decode_count_bit / 8) + 1);
+}
+
+bool subghz_protocol_decoder_megacode_serialize(
+    void* context,
+    FlipperFormat* flipper_format,
+    uint32_t frequency,
+    FuriHalSubGhzPreset preset) {
+    furi_assert(context);
+    SubGhzProtocolDecoderMegaCode* instance = context;
+    return subghz_block_generic_serialize(&instance->generic, flipper_format, frequency, preset);
+}
+
+bool subghz_protocol_decoder_megacode_deserialize(void* context, FlipperFormat* flipper_format) {
+    furi_assert(context);
+    SubGhzProtocolDecoderMegaCode* instance = context;
+    return subghz_block_generic_deserialize(&instance->generic, flipper_format);
+}
+
+void subghz_protocol_decoder_megacode_get_string(void* context, string_t output) {
+    furi_assert(context);
+    SubGhzProtocolDecoderMegaCode* instance = context;
+    subghz_protocol_megacode_check_remote_controller(&instance->generic);
+
+    string_cat_printf(
+        output,
+        "%s %dbit\r\n"
+        "Key:%06lX\r\n"
+        "Sn:%04lX Btn:%X\r\n"
+        "Facility:%X\r\n",
+        instance->generic.protocol_name,
+        instance->generic.data_count_bit,
+        (uint32_t)instance->generic.data,
+        instance->generic.serial,
+        instance->generic.btn,
+        instance->generic.cnt);
+}
diff --git a/lib/subghz/protocols/megacode.h b/lib/subghz/protocols/megacode.h
new file mode 100644
index 00000000..1a3cfd5d
--- /dev/null
+++ b/lib/subghz/protocols/megacode.h
@@ -0,0 +1,109 @@
+#pragma once
+
+#include "base.h"
+
+#define SUBGHZ_PROTOCOL_MEGACODE_NAME "MegaCode"
+
+typedef struct SubGhzProtocolDecoderMegaCode SubGhzProtocolDecoderMegaCode;
+typedef struct SubGhzProtocolEncoderMegaCode SubGhzProtocolEncoderMegaCode;
+
+extern const SubGhzProtocolDecoder subghz_protocol_megacode_decoder;
+extern const SubGhzProtocolEncoder subghz_protocol_megacode_encoder;
+extern const SubGhzProtocol subghz_protocol_megacode;
+
+/**
+ * Allocate SubGhzProtocolEncoderMegaCode.
+ * @param environment Pointer to a SubGhzEnvironment instance
+ * @return SubGhzProtocolEncoderMegaCode* pointer to a SubGhzProtocolEncoderMegaCode instance
+ */
+void* subghz_protocol_encoder_megacode_alloc(SubGhzEnvironment* environment);
+
+/**
+ * Free SubGhzProtocolEncoderMegaCode.
+ * @param context Pointer to a SubGhzProtocolEncoderMegaCode instance
+ */
+void subghz_protocol_encoder_megacode_free(void* context);
+
+/**
+ * Deserialize and generating an upload to send.
+ * @param context Pointer to a SubGhzProtocolEncoderMegaCode instance
+ * @param flipper_format Pointer to a FlipperFormat instance
+ * @return true On success
+ */
+bool subghz_protocol_encoder_megacode_deserialize(void* context, FlipperFormat* flipper_format);
+
+/**
+ * Forced transmission stop.
+ * @param context Pointer to a SubGhzProtocolEncoderMegaCode instance
+ */
+void subghz_protocol_encoder_megacode_stop(void* context);
+
+/**
+ * Getting the level and duration of the upload to be loaded into DMA.
+ * @param context Pointer to a SubGhzProtocolEncoderMegaCode instance
+ * @return LevelDuration 
+ */
+LevelDuration subghz_protocol_encoder_megacode_yield(void* context);
+
+/**
+ * Allocate SubGhzProtocolDecoderMegaCode.
+ * @param environment Pointer to a SubGhzEnvironment instance
+ * @return SubGhzProtocolDecoderMegaCode* pointer to a SubGhzProtocolDecoderMegaCode instance
+ */
+void* subghz_protocol_decoder_megacode_alloc(SubGhzEnvironment* environment);
+
+/**
+ * Free SubGhzProtocolDecoderMegaCode.
+ * @param context Pointer to a SubGhzProtocolDecoderMegaCode instance
+ */
+void subghz_protocol_decoder_megacode_free(void* context);
+
+/**
+ * Reset decoder SubGhzProtocolDecoderMegaCode.
+ * @param context Pointer to a SubGhzProtocolDecoderMegaCode instance
+ */
+void subghz_protocol_decoder_megacode_reset(void* context);
+
+/**
+ * Parse a raw sequence of levels and durations received from the air.
+ * @param context Pointer to a SubGhzProtocolDecoderMegaCode instance
+ * @param level Signal level true-high false-low
+ * @param duration Duration of this level in, us
+ */
+void subghz_protocol_decoder_megacode_feed(void* context, bool level, uint32_t duration);
+
+/**
+ * Getting the hash sum of the last randomly received parcel.
+ * @param context Pointer to a SubGhzProtocolDecoderMegaCode instance
+ * @return hash Hash sum
+ */
+uint8_t subghz_protocol_decoder_megacode_get_hash_data(void* context);
+
+/**
+ * Serialize data SubGhzProtocolDecoderMegaCode.
+ * @param context Pointer to a SubGhzProtocolDecoderMegaCode instance
+ * @param flipper_format Pointer to a FlipperFormat instance
+ * @param frequency The frequency at which the signal was received, Hz
+ * @param preset The modulation on which the signal was received, FuriHalSubGhzPreset
+ * @return true On success
+ */
+bool subghz_protocol_decoder_megacode_serialize(
+    void* context,
+    FlipperFormat* flipper_format,
+    uint32_t frequency,
+    FuriHalSubGhzPreset preset);
+
+/**
+ * Deserialize data SubGhzProtocolDecoderMegaCode.
+ * @param context Pointer to a SubGhzProtocolDecoderMegaCode instance
+ * @param flipper_format Pointer to a FlipperFormat instance
+ * @return true On success
+ */
+bool subghz_protocol_decoder_megacode_deserialize(void* context, FlipperFormat* flipper_format);
+
+/**
+ * Getting a textual representation of the received data.
+ * @param context Pointer to a SubGhzProtocolDecoderMegaCode instance
+ * @param output Resulting text
+ */
+void subghz_protocol_decoder_megacode_get_string(void* context, string_t output);
diff --git a/lib/subghz/protocols/nero_radio.c b/lib/subghz/protocols/nero_radio.c
index d25c377a..6797843f 100644
--- a/lib/subghz/protocols/nero_radio.c
+++ b/lib/subghz/protocols/nero_radio.c
@@ -71,6 +71,7 @@ const SubGhzProtocol subghz_protocol_nero_radio = {
 };
 
 void* subghz_protocol_encoder_nero_radio_alloc(SubGhzEnvironment* environment) {
+    UNUSED(environment);
     SubGhzProtocolEncoderNeroRadio* instance = malloc(sizeof(SubGhzProtocolEncoderNeroRadio));
 
     instance->base.protocol = &subghz_protocol_nero_radio;
@@ -200,6 +201,7 @@ LevelDuration subghz_protocol_encoder_nero_radio_yield(void* context) {
 }
 
 void* subghz_protocol_decoder_nero_radio_alloc(SubGhzEnvironment* environment) {
+    UNUSED(environment);
     SubGhzProtocolDecoderNeroRadio* instance = malloc(sizeof(SubGhzProtocolDecoderNeroRadio));
     instance->base.protocol = &subghz_protocol_nero_radio;
     instance->generic.protocol_name = instance->base.protocol->name;
@@ -278,7 +280,7 @@ void subghz_protocol_decoder_nero_radio_feed(void* context, bool level, uint32_t
         break;
     case NeroRadioDecoderStepCheckDuration:
         if(!level) {
-            if(duration >= (subghz_protocol_nero_radio_const.te_short * 10 +
+            if(duration >= ((uint32_t)subghz_protocol_nero_radio_const.te_short * 10 +
                             subghz_protocol_nero_radio_const.te_delta * 2)) {
                 //Found stop bit
                 if(DURATION_DIFF(
diff --git a/lib/subghz/protocols/nero_sketch.c b/lib/subghz/protocols/nero_sketch.c
index 12a1a547..1ba0cf86 100644
--- a/lib/subghz/protocols/nero_sketch.c
+++ b/lib/subghz/protocols/nero_sketch.c
@@ -6,12 +6,6 @@
 #include "../blocks/generic.h"
 #include "../blocks/math.h"
 
-/*
- * Help
- * https://phreakerclub.com/447
- *
- */
-
 #define TAG "SubGhzProtocolNeroSketch"
 
 static const SubGhzBlockConst subghz_protocol_nero_sketch_const = {
@@ -76,6 +70,7 @@ const SubGhzProtocol subghz_protocol_nero_sketch = {
 };
 
 void* subghz_protocol_encoder_nero_sketch_alloc(SubGhzEnvironment* environment) {
+    UNUSED(environment);
     SubGhzProtocolEncoderNeroSketch* instance = malloc(sizeof(SubGhzProtocolEncoderNeroSketch));
 
     instance->base.protocol = &subghz_protocol_nero_sketch;
@@ -200,6 +195,7 @@ LevelDuration subghz_protocol_encoder_nero_sketch_yield(void* context) {
 }
 
 void* subghz_protocol_decoder_nero_sketch_alloc(SubGhzEnvironment* environment) {
+    UNUSED(environment);
     SubGhzProtocolDecoderNeroSketch* instance = malloc(sizeof(SubGhzProtocolDecoderNeroSketch));
     instance->base.protocol = &subghz_protocol_nero_sketch;
     instance->generic.protocol_name = instance->base.protocol->name;
diff --git a/lib/subghz/protocols/nice_flo.c b/lib/subghz/protocols/nice_flo.c
index 01371b73..d2844dcd 100644
--- a/lib/subghz/protocols/nice_flo.c
+++ b/lib/subghz/protocols/nice_flo.c
@@ -5,12 +5,6 @@
 #include "../blocks/generic.h"
 #include "../blocks/math.h"
 
-/*
- * Help
- * https://phreakerclub.com/447
- *
- */
-
 #define TAG "SubGhzProtocolNiceFLO"
 
 static const SubGhzBlockConst subghz_protocol_nice_flo_const = {
@@ -75,6 +69,7 @@ const SubGhzProtocol subghz_protocol_nice_flo = {
 };
 
 void* subghz_protocol_encoder_nice_flo_alloc(SubGhzEnvironment* environment) {
+    UNUSED(environment);
     SubGhzProtocolEncoderNiceFlo* instance = malloc(sizeof(SubGhzProtocolEncoderNiceFlo));
 
     instance->base.protocol = &subghz_protocol_nice_flo;
@@ -181,6 +176,7 @@ LevelDuration subghz_protocol_encoder_nice_flo_yield(void* context) {
 }
 
 void* subghz_protocol_decoder_nice_flo_alloc(SubGhzEnvironment* environment) {
+    UNUSED(environment);
     SubGhzProtocolDecoderNiceFlo* instance = malloc(sizeof(SubGhzProtocolDecoderNiceFlo));
     instance->base.protocol = &subghz_protocol_nice_flo;
     instance->generic.protocol_name = instance->base.protocol->name;
diff --git a/lib/subghz/protocols/nice_flo.h b/lib/subghz/protocols/nice_flo.h
index ca5cfe3f..430b111d 100644
--- a/lib/subghz/protocols/nice_flo.h
+++ b/lib/subghz/protocols/nice_flo.h
@@ -106,4 +106,4 @@ bool subghz_protocol_decoder_nice_flo_deserialize(void* context, FlipperFormat*
  * @param context Pointer to a SubGhzProtocolDecoderNiceFlo instance
  * @param output Resulting text
  */
-void subghz_protocol_decoder_nice_flo_get_string(void* context, string_t output);
\ No newline at end of file
+void subghz_protocol_decoder_nice_flo_get_string(void* context, string_t output);
diff --git a/lib/subghz/protocols/nice_flor_s.c b/lib/subghz/protocols/nice_flor_s.c
index 8a3e26a8..1fe5876d 100644
--- a/lib/subghz/protocols/nice_flor_s.c
+++ b/lib/subghz/protocols/nice_flor_s.c
@@ -5,6 +5,7 @@
 #include "../blocks/encoder.h"
 #include "../blocks/generic.h"
 #include "../blocks/math.h"
+
 /*
  * https://phreakerclub.com/1615
  * https://phreakerclub.com/forum/showthread.php?t=2360
diff --git a/lib/subghz/protocols/princeton.c b/lib/subghz/protocols/princeton.c
index 4fa2b481..046484c7 100644
--- a/lib/subghz/protocols/princeton.c
+++ b/lib/subghz/protocols/princeton.c
@@ -12,7 +12,7 @@
  *
  */
 
-#define TAG "SubGhzProtocolCAME"
+#define TAG "SubGhzProtocolPrinceton"
 
 static const SubGhzBlockConst subghz_protocol_princeton_const = {
     .te_short = 400,
@@ -28,6 +28,7 @@ struct SubGhzProtocolDecoderPrinceton {
     SubGhzBlockGeneric generic;
 
     uint32_t te;
+    uint32_t last_data;
 };
 
 struct SubGhzProtocolEncoderPrinceton {
@@ -79,6 +80,7 @@ const SubGhzProtocol subghz_protocol_princeton = {
 };
 
 void* subghz_protocol_encoder_princeton_alloc(SubGhzEnvironment* environment) {
+    UNUSED(environment);
     SubGhzProtocolEncoderPrinceton* instance = malloc(sizeof(SubGhzProtocolEncoderPrinceton));
 
     instance->base.protocol = &subghz_protocol_princeton;
@@ -193,6 +195,7 @@ LevelDuration subghz_protocol_encoder_princeton_yield(void* context) {
 }
 
 void* subghz_protocol_decoder_princeton_alloc(SubGhzEnvironment* environment) {
+    UNUSED(environment);
     SubGhzProtocolDecoderPrinceton* instance = malloc(sizeof(SubGhzProtocolDecoderPrinceton));
     instance->base.protocol = &subghz_protocol_princeton;
     instance->generic.protocol_name = instance->base.protocol->name;
@@ -209,6 +212,7 @@ void subghz_protocol_decoder_princeton_reset(void* context) {
     furi_assert(context);
     SubGhzProtocolDecoderPrinceton* instance = context;
     instance->decoder.parser_step = PrincetonDecoderStepReset;
+    instance->last_data = 0;
 }
 
 void subghz_protocol_decoder_princeton_feed(void* context, bool level, uint32_t duration) {
@@ -236,20 +240,24 @@ void subghz_protocol_decoder_princeton_feed(void* context, bool level, uint32_t
         break;
     case PrincetonDecoderStepCheckDuration:
         if(!level) {
-            if(duration >= (subghz_protocol_princeton_const.te_short * 10 +
+            if(duration >= ((uint32_t)subghz_protocol_princeton_const.te_short * 10 +
                             subghz_protocol_princeton_const.te_delta)) {
                 instance->decoder.parser_step = PrincetonDecoderStepSaveDuration;
                 if(instance->decoder.decode_count_bit ==
                    subghz_protocol_princeton_const.min_count_bit_for_found) {
-                    instance->te /= (instance->decoder.decode_count_bit * 4 + 1);
+                    if((instance->last_data == instance->decoder.decode_data) &&
+                       instance->last_data) {
+                        instance->te /= (instance->decoder.decode_count_bit * 4 + 1);
 
-                    instance->generic.data = instance->decoder.decode_data;
-                    instance->generic.data_count_bit = instance->decoder.decode_count_bit;
-                    instance->generic.serial = instance->decoder.decode_data >> 4;
-                    instance->generic.btn = (uint8_t)instance->decoder.decode_data & 0x00000F;
+                        instance->generic.data = instance->decoder.decode_data;
+                        instance->generic.data_count_bit = instance->decoder.decode_count_bit;
+                        instance->generic.serial = instance->decoder.decode_data >> 4;
+                        instance->generic.btn = (uint8_t)instance->decoder.decode_data & 0x00000F;
 
-                    if(instance->base.callback)
-                        instance->base.callback(&instance->base, instance->base.context);
+                        if(instance->base.callback)
+                            instance->base.callback(&instance->base, instance->base.context);
+                    }
+                    instance->last_data = instance->decoder.decode_data;
                 }
                 instance->decoder.decode_data = 0;
                 instance->decoder.decode_count_bit = 0;
diff --git a/lib/subghz/protocols/princeton_for_testing.c b/lib/subghz/protocols/princeton_for_testing.c
index 1c4552f4..5c3f7151 100644
--- a/lib/subghz/protocols/princeton_for_testing.c
+++ b/lib/subghz/protocols/princeton_for_testing.c
@@ -2,6 +2,7 @@
 
 #include "furi_hal.h"
 #include "../blocks/math.h"
+
 /*
  * Help
  * https://phreakerclub.com/447
@@ -248,7 +249,7 @@ void subghz_decoder_princeton_for_testing_parse(
         break;
     case PrincetonDecoderStepCheckDuration:
         if(!level) {
-            if(duration >= (instance->te_short * 10 + instance->te_delta)) {
+            if(duration >= ((uint32_t)instance->te_short * 10 + instance->te_delta)) {
                 instance->parser_step = PrincetonDecoderStepSaveDuration;
                 if(instance->code_count_bit == instance->code_min_count_bit_for_found) {
                     instance->te /= (instance->code_count_bit * 4 + 1);
diff --git a/lib/subghz/protocols/raw.c b/lib/subghz/protocols/raw.c
index 111f4536..516aa633 100644
--- a/lib/subghz/protocols/raw.c
+++ b/lib/subghz/protocols/raw.c
@@ -192,6 +192,7 @@ size_t subghz_protocol_raw_get_sample_write(SubGhzProtocolDecoderRAW* instance)
 }
 
 void* subghz_protocol_decoder_raw_alloc(SubGhzEnvironment* environment) {
+    UNUSED(environment);
     SubGhzProtocolDecoderRAW* instance = malloc(sizeof(SubGhzProtocolDecoderRAW));
     instance->base.protocol = &subghz_protocol_raw;
     instance->upload_raw = NULL;
@@ -243,6 +244,7 @@ void subghz_protocol_decoder_raw_get_string(void* context, string_t output) {
 }
 
 void* subghz_protocol_encoder_raw_alloc(SubGhzEnvironment* environment) {
+    UNUSED(environment);
     SubGhzProtocolEncoderRAW* instance = malloc(sizeof(SubGhzProtocolEncoderRAW));
 
     instance->base.protocol = &subghz_protocol_raw;
diff --git a/lib/subghz/protocols/registry.c b/lib/subghz/protocols/registry.c
index c384eda1..b90e535c 100644
--- a/lib/subghz/protocols/registry.c
+++ b/lib/subghz/protocols/registry.c
@@ -1,13 +1,14 @@
 #include "registry.h"
 
 const SubGhzProtocol* subghz_protocol_registry[] = {
-    &subghz_protocol_princeton,    &subghz_protocol_keeloq,     &subghz_protocol_star_line,
+    &subghz_protocol_gate_tx,      &subghz_protocol_keeloq,     &subghz_protocol_star_line,
     &subghz_protocol_nice_flo,     &subghz_protocol_came,       &subghz_protocol_faac_slh,
     &subghz_protocol_nice_flor_s,  &subghz_protocol_came_twee,  &subghz_protocol_came_atomo,
     &subghz_protocol_nero_sketch,  &subghz_protocol_ido,        &subghz_protocol_kia,
     &subghz_protocol_hormann,      &subghz_protocol_nero_radio, &subghz_protocol_somfy_telis,
-    &subghz_protocol_somfy_keytis, &subghz_protocol_scher_khan, &subghz_protocol_gate_tx,
-    &subghz_protocol_raw,          &subghz_protocol_firefly,
+    &subghz_protocol_somfy_keytis, &subghz_protocol_scher_khan, &subghz_protocol_princeton,
+    &subghz_protocol_raw,          &subghz_protocol_firefly,    &subghz_protocol_secplus_v2,
+    &subghz_protocol_secplus_v1,   &subghz_protocol_megacode,   &subghz_protocol_holtek,
 
 };
 
diff --git a/lib/subghz/protocols/registry.h b/lib/subghz/protocols/registry.h
index 531caee2..a8bc9af4 100644
--- a/lib/subghz/protocols/registry.h
+++ b/lib/subghz/protocols/registry.h
@@ -22,6 +22,10 @@
 #include "gate_tx.h"
 #include "raw.h"
 #include "firefly.h"
+#include "secplus_v2.h"
+#include "secplus_v1.h"
+#include "megacode.h"
+#include "holtek.h"
 
 /**
  * Registration by name SubGhzProtocol.
diff --git a/lib/subghz/protocols/scher_khan.c b/lib/subghz/protocols/scher_khan.c
index c352b4ae..a9a7c040 100644
--- a/lib/subghz/protocols/scher_khan.c
+++ b/lib/subghz/protocols/scher_khan.c
@@ -76,6 +76,7 @@ const SubGhzProtocol subghz_protocol_scher_khan = {
 };
 
 void* subghz_protocol_decoder_scher_khan_alloc(SubGhzEnvironment* environment) {
+    UNUSED(environment);
     SubGhzProtocolDecoderScherKhan* instance = malloc(sizeof(SubGhzProtocolDecoderScherKhan));
     instance->base.protocol = &subghz_protocol_scher_khan;
     instance->generic.protocol_name = instance->base.protocol->name;
@@ -150,7 +151,7 @@ void subghz_protocol_decoder_scher_khan_feed(void* context, bool level, uint32_t
         break;
     case ScherKhanDecoderStepSaveDuration:
         if(level) {
-            if(duration >= (subghz_protocol_scher_khan_const.te_long +
+            if(duration >= (uint32_t)(subghz_protocol_scher_khan_const.te_long +
                             subghz_protocol_scher_khan_const.te_delta * 2)) {
                 //Found stop bit
                 instance->decoder.parser_step = ScherKhanDecoderStepReset;
diff --git a/lib/subghz/protocols/secplus_v1.c b/lib/subghz/protocols/secplus_v1.c
new file mode 100644
index 00000000..ff43e2a4
--- /dev/null
+++ b/lib/subghz/protocols/secplus_v1.c
@@ -0,0 +1,370 @@
+#include "secplus_v1.h"
+#include "../blocks/const.h"
+#include "../blocks/decoder.h"
+#include "../blocks/encoder.h"
+#include "../blocks/generic.h"
+#include "../blocks/math.h"
+
+/*
+* Help
+* https://github.com/argilo/secplus
+* https://github.com/merbanan/rtl_433/blob/master/src/devices/secplus_v1.c
+*/
+
+#define TAG "SubGhzProtocoSecPlus_v1"
+
+#define SECPLUS_V1_BIT_ERR -1 //0b0000
+#define SECPLUS_V1_BIT_0 0 //0b0001
+#define SECPLUS_V1_BIT_1 1 //0b0011
+#define SECPLUS_V1_BIT_2 2 //0b0111
+
+#define SECPLUS_V1_PACKET_1_HEADER 0x00
+#define SECPLUS_V1_PACKET_2_HEADER 0x02
+#define SECPLUS_V1_PACKET_1_INDEX_BASE 0
+#define SECPLUS_V1_PACKET_2_INDEX_BASE 21
+#define SECPLUS_V1_PACKET_1_ACCEPTED (1 << 0)
+#define SECPLUS_V1_PACKET_2_ACCEPTED (1 << 1)
+
+static const SubGhzBlockConst subghz_protocol_secplus_v1_const = {
+    .te_short = 500,
+    .te_long = 1500,
+    .te_delta = 100,
+    .min_count_bit_for_found = 21,
+};
+
+struct SubGhzProtocolDecoderSecPlus_v1 {
+    SubGhzProtocolDecoderBase base;
+
+    SubGhzBlockDecoder decoder;
+    SubGhzBlockGeneric generic;
+
+    uint8_t packet_accepted;
+    uint8_t base_packet_index;
+    uint8_t data_array[44];
+};
+
+struct SubGhzProtocolEncoderSecPlus_v1 {
+    SubGhzProtocolEncoderBase base;
+
+    SubGhzProtocolBlockEncoder encoder;
+    SubGhzBlockGeneric generic;
+};
+
+typedef enum {
+    SecPlus_v1DecoderStepReset = 0,
+    SecPlus_v1DecoderStepSearchStartBit,
+    SecPlus_v1DecoderStepSaveDuration,
+    SecPlus_v1DecoderStepDecoderData,
+} SecPlus_v1DecoderStep;
+
+const SubGhzProtocolDecoder subghz_protocol_secplus_v1_decoder = {
+    .alloc = subghz_protocol_decoder_secplus_v1_alloc,
+    .free = subghz_protocol_decoder_secplus_v1_free,
+
+    .feed = subghz_protocol_decoder_secplus_v1_feed,
+    .reset = subghz_protocol_decoder_secplus_v1_reset,
+
+    .get_hash_data = subghz_protocol_decoder_secplus_v1_get_hash_data,
+    .serialize = subghz_protocol_decoder_secplus_v1_serialize,
+    .deserialize = subghz_protocol_decoder_secplus_v1_deserialize,
+    .get_string = subghz_protocol_decoder_secplus_v1_get_string,
+};
+
+const SubGhzProtocolEncoder subghz_protocol_secplus_v1_encoder = {
+    .alloc = NULL,
+    .free = NULL,
+
+    .deserialize = NULL,
+    .stop = NULL,
+    .yield = NULL,
+};
+
+const SubGhzProtocol subghz_protocol_secplus_v1 = {
+    .name = SUBGHZ_PROTOCOL_SECPLUS_V1_NAME,
+    .type = SubGhzProtocolTypeDynamic,
+    .flag = SubGhzProtocolFlag_315 | SubGhzProtocolFlag_AM | SubGhzProtocolFlag_Decodable,
+
+    .decoder = &subghz_protocol_secplus_v1_decoder,
+    .encoder = &subghz_protocol_secplus_v1_encoder,
+};
+
+void* subghz_protocol_decoder_secplus_v1_alloc(SubGhzEnvironment* environment) {
+    UNUSED(environment);
+    SubGhzProtocolDecoderSecPlus_v1* instance = malloc(sizeof(SubGhzProtocolDecoderSecPlus_v1));
+    instance->base.protocol = &subghz_protocol_secplus_v1;
+    instance->generic.protocol_name = instance->base.protocol->name;
+
+    return instance;
+}
+
+void subghz_protocol_decoder_secplus_v1_free(void* context) {
+    furi_assert(context);
+    SubGhzProtocolDecoderSecPlus_v1* instance = context;
+    free(instance);
+}
+
+void subghz_protocol_decoder_secplus_v1_reset(void* context) {
+    furi_assert(context);
+    // SubGhzProtocolDecoderSecPlus_v1* instance = context;
+    // does not reset the decoder because you need to get 2 parts of the package
+}
+
+/** 
+ * Security+ 1.0 half-message decoding
+ * @param instance SubGhzProtocolDecoderSecPlus_v1* 
+ */
+
+static void subghz_protocol_secplus_v1_decode(SubGhzProtocolDecoderSecPlus_v1* instance) {
+    uint32_t rolling = 0;
+    uint32_t fixed = 0;
+    uint32_t acc = 0;
+    uint8_t digit = 0;
+
+    //decode packet 1
+    for(uint8_t i = 1; i < 21; i += 2) {
+        digit = instance->data_array[i];
+        rolling = (rolling * 3) + digit;
+        acc += digit;
+
+        digit = (60 + instance->data_array[i + 1] - acc) % 3;
+        fixed = (fixed * 3) + digit;
+        acc += digit;
+    }
+
+    acc = 0;
+    //decode packet 2
+    for(uint8_t i = 22; i < 42; i += 2) {
+        digit = instance->data_array[i];
+        rolling = (rolling * 3) + digit;
+        acc += digit;
+
+        digit = (60 + instance->data_array[i + 1] - acc) % 3;
+        fixed = (fixed * 3) + digit;
+        acc += digit;
+    }
+
+    rolling = subghz_protocol_blocks_reverse_key(rolling, 32);
+    instance->generic.data = (uint64_t)fixed << 32 | rolling;
+
+    instance->generic.data_count_bit =
+        subghz_protocol_secplus_v1_const.min_count_bit_for_found * 2;
+}
+
+void subghz_protocol_decoder_secplus_v1_feed(void* context, bool level, uint32_t duration) {
+    furi_assert(context);
+    SubGhzProtocolDecoderSecPlus_v1* instance = context;
+
+    switch(instance->decoder.parser_step) {
+    case SecPlus_v1DecoderStepReset:
+        if((!level) && (DURATION_DIFF(duration, subghz_protocol_secplus_v1_const.te_short * 120) <
+                        subghz_protocol_secplus_v1_const.te_delta * 120)) {
+            //Found header Security+ 1.0
+            instance->decoder.parser_step = SecPlus_v1DecoderStepSearchStartBit;
+            instance->decoder.decode_data = 0;
+            instance->decoder.decode_count_bit = 0;
+            instance->packet_accepted = 0;
+            memset(instance->data_array, 0, sizeof(instance->data_array));
+        }
+        break;
+    case SecPlus_v1DecoderStepSearchStartBit:
+        if(level) {
+            if(DURATION_DIFF(duration, subghz_protocol_secplus_v1_const.te_short) <
+               subghz_protocol_secplus_v1_const.te_delta) {
+                instance->base_packet_index = SECPLUS_V1_PACKET_1_INDEX_BASE;
+                instance
+                    ->data_array[instance->decoder.decode_count_bit + instance->base_packet_index] =
+                    SECPLUS_V1_BIT_0;
+                instance->decoder.decode_count_bit++;
+                instance->decoder.parser_step = SecPlus_v1DecoderStepSaveDuration;
+            } else if(
+                DURATION_DIFF(duration, subghz_protocol_secplus_v1_const.te_long) <
+                subghz_protocol_secplus_v1_const.te_delta) {
+                instance->base_packet_index = SECPLUS_V1_PACKET_2_INDEX_BASE;
+                instance
+                    ->data_array[instance->decoder.decode_count_bit + instance->base_packet_index] =
+                    SECPLUS_V1_BIT_2;
+                instance->decoder.decode_count_bit++;
+                instance->decoder.parser_step = SecPlus_v1DecoderStepSaveDuration;
+            } else {
+                instance->decoder.parser_step = SecPlus_v1DecoderStepReset;
+            }
+        } else {
+            instance->decoder.parser_step = SecPlus_v1DecoderStepReset;
+        }
+        break;
+    case SecPlus_v1DecoderStepSaveDuration:
+        if(!level) { //save interval
+            if(DURATION_DIFF(duration, subghz_protocol_secplus_v1_const.te_short * 120) <
+               subghz_protocol_secplus_v1_const.te_delta * 120) {
+                if(instance->decoder.decode_count_bit ==
+                   subghz_protocol_secplus_v1_const.min_count_bit_for_found) {
+                    if(instance->base_packet_index == SECPLUS_V1_PACKET_1_INDEX_BASE)
+                        instance->packet_accepted |= SECPLUS_V1_PACKET_1_ACCEPTED;
+                    if(instance->base_packet_index == SECPLUS_V1_PACKET_2_INDEX_BASE)
+                        instance->packet_accepted |= SECPLUS_V1_PACKET_2_ACCEPTED;
+
+                    if(instance->packet_accepted ==
+                       (SECPLUS_V1_PACKET_1_ACCEPTED | SECPLUS_V1_PACKET_2_ACCEPTED)) {
+                        subghz_protocol_secplus_v1_decode(instance);
+
+                        if(instance->base.callback)
+                            instance->base.callback(&instance->base, instance->base.context);
+                        instance->decoder.parser_step = SecPlus_v1DecoderStepReset;
+                    }
+                }
+                instance->decoder.parser_step = SecPlus_v1DecoderStepSearchStartBit;
+                instance->decoder.decode_data = 0;
+                instance->decoder.decode_count_bit = 0;
+            } else {
+                instance->decoder.te_last = duration;
+                instance->decoder.parser_step = SecPlus_v1DecoderStepDecoderData;
+            }
+        } else {
+            instance->decoder.parser_step = SecPlus_v1DecoderStepReset;
+        }
+        break;
+    case SecPlus_v1DecoderStepDecoderData:
+        if(level && (instance->decoder.decode_count_bit <=
+                     subghz_protocol_secplus_v1_const.min_count_bit_for_found)) {
+            if((DURATION_DIFF(
+                    instance->decoder.te_last, subghz_protocol_secplus_v1_const.te_short * 3) <
+                subghz_protocol_secplus_v1_const.te_delta * 3) &&
+               (DURATION_DIFF(duration, subghz_protocol_secplus_v1_const.te_short) <
+                subghz_protocol_secplus_v1_const.te_delta)) {
+                instance
+                    ->data_array[instance->decoder.decode_count_bit + instance->base_packet_index] =
+                    SECPLUS_V1_BIT_0;
+                instance->decoder.decode_count_bit++;
+                instance->decoder.parser_step = SecPlus_v1DecoderStepSaveDuration;
+            } else if(
+                (DURATION_DIFF(
+                     instance->decoder.te_last, subghz_protocol_secplus_v1_const.te_short * 2) <
+                 subghz_protocol_secplus_v1_const.te_delta * 2) &&
+                (DURATION_DIFF(duration, subghz_protocol_secplus_v1_const.te_short * 2) <
+                 subghz_protocol_secplus_v1_const.te_delta * 2)) {
+                instance
+                    ->data_array[instance->decoder.decode_count_bit + instance->base_packet_index] =
+                    SECPLUS_V1_BIT_1;
+                instance->decoder.decode_count_bit++;
+                instance->decoder.parser_step = SecPlus_v1DecoderStepSaveDuration;
+            } else if(
+                (DURATION_DIFF(
+                     instance->decoder.te_last, subghz_protocol_secplus_v1_const.te_short) <
+                 subghz_protocol_secplus_v1_const.te_delta) &&
+                (DURATION_DIFF(duration, subghz_protocol_secplus_v1_const.te_short * 3) <
+                 subghz_protocol_secplus_v1_const.te_delta * 3)) {
+                instance
+                    ->data_array[instance->decoder.decode_count_bit + instance->base_packet_index] =
+                    SECPLUS_V1_BIT_2;
+                instance->decoder.decode_count_bit++;
+                instance->decoder.parser_step = SecPlus_v1DecoderStepSaveDuration;
+            } else {
+                instance->decoder.parser_step = SecPlus_v1DecoderStepReset;
+            }
+        } else {
+            instance->decoder.parser_step = SecPlus_v1DecoderStepReset;
+        }
+        break;
+    }
+}
+
+uint8_t subghz_protocol_decoder_secplus_v1_get_hash_data(void* context) {
+    furi_assert(context);
+    SubGhzProtocolDecoderSecPlus_v1* instance = context;
+    return subghz_protocol_blocks_get_hash_data(
+        &instance->decoder, (instance->decoder.decode_count_bit / 8) + 1);
+}
+
+bool subghz_protocol_decoder_secplus_v1_serialize(
+    void* context,
+    FlipperFormat* flipper_format,
+    uint32_t frequency,
+    FuriHalSubGhzPreset preset) {
+    furi_assert(context);
+    SubGhzProtocolDecoderSecPlus_v1* instance = context;
+    return subghz_block_generic_serialize(&instance->generic, flipper_format, frequency, preset);
+}
+
+bool subghz_protocol_decoder_secplus_v1_deserialize(void* context, FlipperFormat* flipper_format) {
+    furi_assert(context);
+    SubGhzProtocolDecoderSecPlus_v1* instance = context;
+    return subghz_block_generic_deserialize(&instance->generic, flipper_format);
+}
+
+void subghz_protocol_decoder_secplus_v1_get_string(void* context, string_t output) {
+    furi_assert(context);
+    SubGhzProtocolDecoderSecPlus_v1* instance = context;
+
+    uint32_t fixed = (instance->generic.data >> 32) & 0xFFFFFFFF;
+    instance->generic.cnt = instance->generic.data & 0xFFFFFFFF;
+
+    instance->generic.btn = fixed % 3;
+    uint8_t id0 = (fixed / 3) % 3;
+    uint8_t id1 = (fixed / 9) % 3;
+    uint16_t pin = 0;
+
+    string_cat_printf(
+        output,
+        "%s %db\r\n"
+        "Key:0x%lX%08lX\r\n"
+        "id1:%d id0:%d",
+        instance->generic.protocol_name,
+        instance->generic.data_count_bit,
+        (uint32_t)(instance->generic.data >> 32),
+        (uint32_t)instance->generic.data,
+        id1,
+        id0);
+
+    if(id1 == 0) {
+        // (fixed // 3**3) % (3**7)    3^3=27  3^73=72187
+
+        instance->generic.serial = (fixed / 27) % 2187;
+        // pin = (fixed // 3**10) % (3**9)  3^10=59049 3^9=19683
+        pin = (fixed / 59049) % 19683;
+
+        if(pin <= 9999) {
+            string_cat_printf(output, " pin:%d", pin);
+        } else if(10000 <= pin && pin <= 11029) {
+            string_cat_printf(output, " pin:enter");
+        }
+
+        int pin_suffix = 0;
+        // pin_suffix = (fixed // 3**19) % 3   3^19=1162261467
+        pin_suffix = (fixed / 1162261467) % 3;
+
+        if(pin_suffix == 1) {
+            string_cat_printf(output, " #\r\n");
+        } else if(pin_suffix == 2) {
+            string_cat_printf(output, " *\r\n");
+        } else {
+            string_cat_printf(output, "\r\n");
+        }
+        string_cat_printf(
+            output,
+            "Sn:0x%08lX\r\n"
+            "Cnt:0x%03X\r\n"
+            "Sw_id:0x%X\r\n",
+            instance->generic.serial,
+            instance->generic.cnt,
+            instance->generic.btn);
+    } else {
+        //id = fixed / 27;
+        instance->generic.serial = fixed / 27;
+        if(instance->generic.btn == 1) {
+            string_cat_printf(output, " Btn:left\r\n");
+        } else if(instance->generic.btn == 0) {
+            string_cat_printf(output, " Btn:middle\r\n");
+        } else if(instance->generic.btn == 2) {
+            string_cat_printf(output, " Btn:right\r\n");
+        }
+
+        string_cat_printf(
+            output,
+            "Sn:0x%08lX\r\n"
+            "Cnt:0x%03X\r\n"
+            "Sw_id:0x%X\r\n",
+            instance->generic.serial,
+            instance->generic.cnt,
+            instance->generic.btn);
+    }
+}
diff --git a/lib/subghz/protocols/secplus_v1.h b/lib/subghz/protocols/secplus_v1.h
new file mode 100644
index 00000000..891f751c
--- /dev/null
+++ b/lib/subghz/protocols/secplus_v1.h
@@ -0,0 +1,74 @@
+#pragma once
+#include "base.h"
+
+#define SUBGHZ_PROTOCOL_SECPLUS_V1_NAME "Security+ 1.0"
+
+typedef struct SubGhzProtocolDecoderSecPlus_v1 SubGhzProtocolDecoderSecPlus_v1;
+typedef struct SubGhzProtocolEncoderSecPlus_v1 SubGhzProtocolEncoderSecPlus_v1;
+
+extern const SubGhzProtocolDecoder subghz_protocol_secplus_v1_decoder;
+extern const SubGhzProtocolEncoder subghz_protocol_secplus_v1_encoder;
+extern const SubGhzProtocol subghz_protocol_secplus_v1;
+
+/**
+ * Allocate SubGhzProtocolDecoderSecPlus_v1.
+ * @param environment Pointer to a SubGhzEnvironment instance
+ * @return SubGhzProtocolDecoderSecPlus_v1* pointer to a SubGhzProtocolDecoderSecPlus_v1 instance
+ */
+void* subghz_protocol_decoder_secplus_v1_alloc(SubGhzEnvironment* environment);
+
+/**
+ * Free SubGhzProtocolDecoderSecPlus_v1.
+ * @param context Pointer to a SubGhzProtocolDecoderSecPlus_v1 instance
+ */
+void subghz_protocol_decoder_secplus_v1_free(void* context);
+
+/**
+ * Reset decoder SubGhzProtocolDecoderSecPlus_v1.
+ * @param context Pointer to a SubGhzProtocolDecoderSecPlus_v1 instance
+ */
+void subghz_protocol_decoder_secplus_v1_reset(void* context);
+
+/**
+ * Parse a raw sequence of levels and durations received from the air.
+ * @param context Pointer to a SubGhzProtocolDecoderSecPlus_v1 instance
+ * @param level Signal level true-high false-low
+ * @param duration Duration of this level in, us
+ */
+void subghz_protocol_decoder_secplus_v1_feed(void* context, bool level, uint32_t duration);
+
+/**
+ * Getting the hash sum of the last randomly received parcel.
+ * @param context Pointer to a SubGhzProtocolDecoderSecPlus_v1 instance
+ * @return hash Hash sum
+ */
+uint8_t subghz_protocol_decoder_secplus_v1_get_hash_data(void* context);
+
+/**
+ * Serialize data SubGhzProtocolDecoderSecPlus_v1.
+ * @param context Pointer to a SubGhzProtocolDecoderSecPlus_v1 instance
+ * @param flipper_format Pointer to a FlipperFormat instance
+ * @param frequency The frequency at which the signal was received, Hz
+ * @param preset The modulation on which the signal was received, FuriHalSubGhzPreset
+ * @return true On success
+ */
+bool subghz_protocol_decoder_secplus_v1_serialize(
+    void* context,
+    FlipperFormat* flipper_format,
+    uint32_t frequency,
+    FuriHalSubGhzPreset preset);
+
+/**
+ * Deserialize data SubGhzProtocolDecoderSecPlus_v1.
+ * @param context Pointer to a SubGhzProtocolDecoderSecPlus_v1 instance
+ * @param flipper_format Pointer to a FlipperFormat instance
+ * @return true On success
+ */
+bool subghz_protocol_decoder_secplus_v1_deserialize(void* context, FlipperFormat* flipper_format);
+
+/**
+ * Getting a textual representation of the received data.
+ * @param context Pointer to a SubGhzProtocolDecoderSecPlus_v1 instance
+ * @param output Resulting text
+ */
+void subghz_protocol_decoder_secplus_v1_get_string(void* context, string_t output);
diff --git a/lib/subghz/protocols/secplus_v2.c b/lib/subghz/protocols/secplus_v2.c
new file mode 100644
index 00000000..936eb0a6
--- /dev/null
+++ b/lib/subghz/protocols/secplus_v2.c
@@ -0,0 +1,476 @@
+#include "secplus_v2.h"
+#include <lib/toolbox/manchester_decoder.h>
+#include "../blocks/const.h"
+#include "../blocks/decoder.h"
+#include "../blocks/encoder.h"
+#include "../blocks/generic.h"
+#include "../blocks/math.h"
+
+/*
+* Help
+* https://github.com/argilo/secplus
+* https://github.com/merbanan/rtl_433/blob/master/src/devices/secplus_v2.c
+*/
+
+#define TAG "SubGhzProtocoSecPlus_v2"
+
+#define SECPLUS_V2_HEADER 0x3C0000000000
+#define SECPLUS_V2_HEADER_MASK 0xFFFF3C0000000000
+#define SECPLUS_V2_PACKET_1 0x000000000000
+#define SECPLUS_V2_PACKET_2 0x010000000000
+#define SECPLUS_V2_PACKET_MASK 0x30000000000
+
+static const SubGhzBlockConst subghz_protocol_secplus_v2_const = {
+    .te_short = 250,
+    .te_long = 500,
+    .te_delta = 110,
+    .min_count_bit_for_found = 62,
+};
+
+struct SubGhzProtocolDecoderSecPlus_v2 {
+    SubGhzProtocolDecoderBase base;
+
+    SubGhzBlockDecoder decoder;
+    SubGhzBlockGeneric generic;
+
+    ManchesterState manchester_saved_state;
+    uint64_t secplus_packet_1;
+};
+
+struct SubGhzProtocolEncoderSecPlus_v2 {
+    SubGhzProtocolEncoderBase base;
+
+    SubGhzProtocolBlockEncoder encoder;
+    SubGhzBlockGeneric generic;
+};
+
+typedef enum {
+    SecPlus_v2DecoderStepReset = 0,
+    SecPlus_v2DecoderStepDecoderData,
+} SecPlus_v2DecoderStep;
+
+const SubGhzProtocolDecoder subghz_protocol_secplus_v2_decoder = {
+    .alloc = subghz_protocol_decoder_secplus_v2_alloc,
+    .free = subghz_protocol_decoder_secplus_v2_free,
+
+    .feed = subghz_protocol_decoder_secplus_v2_feed,
+    .reset = subghz_protocol_decoder_secplus_v2_reset,
+
+    .get_hash_data = subghz_protocol_decoder_secplus_v2_get_hash_data,
+    .serialize = subghz_protocol_decoder_secplus_v2_serialize,
+    .deserialize = subghz_protocol_decoder_secplus_v2_deserialize,
+    .get_string = subghz_protocol_decoder_secplus_v2_get_string,
+};
+
+const SubGhzProtocolEncoder subghz_protocol_secplus_v2_encoder = {
+    .alloc = NULL,
+    .free = NULL,
+
+    .deserialize = NULL,
+    .stop = NULL,
+    .yield = NULL,
+};
+
+const SubGhzProtocol subghz_protocol_secplus_v2 = {
+    .name = SUBGHZ_PROTOCOL_SECPLUS_V2_NAME,
+    .type = SubGhzProtocolTypeDynamic,
+    .flag = SubGhzProtocolFlag_315 | SubGhzProtocolFlag_AM | SubGhzProtocolFlag_Decodable,
+
+    .decoder = &subghz_protocol_secplus_v2_decoder,
+    .encoder = &subghz_protocol_secplus_v2_encoder,
+};
+
+void* subghz_protocol_decoder_secplus_v2_alloc(SubGhzEnvironment* environment) {
+    UNUSED(environment);
+    SubGhzProtocolDecoderSecPlus_v2* instance = malloc(sizeof(SubGhzProtocolDecoderSecPlus_v2));
+    instance->base.protocol = &subghz_protocol_secplus_v2;
+    instance->generic.protocol_name = instance->base.protocol->name;
+
+    return instance;
+}
+
+void subghz_protocol_decoder_secplus_v2_free(void* context) {
+    furi_assert(context);
+    SubGhzProtocolDecoderSecPlus_v2* instance = context;
+    free(instance);
+}
+
+void subghz_protocol_decoder_secplus_v2_reset(void* context) {
+    furi_assert(context);
+    // SubGhzProtocolDecoderSecPlus_v2* instance = context;
+    // does not reset the decoder because you need to get 2 parts of the package
+}
+
+static bool subghz_protocol_secplus_v2_check_packet(SubGhzProtocolDecoderSecPlus_v2* instance) {
+    if((instance->decoder.decode_data & SECPLUS_V2_HEADER_MASK) == SECPLUS_V2_HEADER) {
+        if((instance->decoder.decode_data & SECPLUS_V2_PACKET_MASK) == SECPLUS_V2_PACKET_1) {
+            instance->secplus_packet_1 = instance->decoder.decode_data;
+        } else if(
+            ((instance->decoder.decode_data & SECPLUS_V2_PACKET_MASK) == SECPLUS_V2_PACKET_2) &&
+            (instance->secplus_packet_1)) {
+            return true;
+        }
+    }
+    return false;
+}
+
+void subghz_protocol_decoder_secplus_v2_feed(void* context, bool level, uint32_t duration) {
+    furi_assert(context);
+    SubGhzProtocolDecoderSecPlus_v2* instance = context;
+
+    ManchesterEvent event = ManchesterEventReset;
+    switch(instance->decoder.parser_step) {
+    case SecPlus_v2DecoderStepReset:
+        if((!level) && (DURATION_DIFF(duration, subghz_protocol_secplus_v2_const.te_long * 130) <
+                        subghz_protocol_secplus_v2_const.te_delta * 100)) {
+            //Found header Security+ 2.0
+            instance->decoder.parser_step = SecPlus_v2DecoderStepDecoderData;
+            instance->decoder.decode_data = 0;
+            instance->decoder.decode_count_bit = 0;
+            instance->secplus_packet_1 = 0;
+            manchester_advance(
+                instance->manchester_saved_state,
+                ManchesterEventReset,
+                &instance->manchester_saved_state,
+                NULL);
+            manchester_advance(
+                instance->manchester_saved_state,
+                ManchesterEventLongHigh,
+                &instance->manchester_saved_state,
+                NULL);
+            manchester_advance(
+                instance->manchester_saved_state,
+                ManchesterEventShortLow,
+                &instance->manchester_saved_state,
+                NULL);
+        }
+        break;
+    case SecPlus_v2DecoderStepDecoderData:
+        if(!level) {
+            if(DURATION_DIFF(duration, subghz_protocol_secplus_v2_const.te_short) <
+               subghz_protocol_secplus_v2_const.te_delta) {
+                event = ManchesterEventShortLow;
+            } else if(
+                DURATION_DIFF(duration, subghz_protocol_secplus_v2_const.te_long) <
+                subghz_protocol_secplus_v2_const.te_delta) {
+                event = ManchesterEventLongLow;
+            } else if(
+                duration >= (uint32_t)(subghz_protocol_secplus_v2_const.te_long * 2 +
+                             subghz_protocol_secplus_v2_const.te_delta)) {
+                if(instance->decoder.decode_count_bit >=
+                   subghz_protocol_secplus_v2_const.min_count_bit_for_found) {
+                    instance->generic.data = instance->decoder.decode_data;
+                    instance->generic.data_count_bit = instance->decoder.decode_count_bit;
+                    if(subghz_protocol_secplus_v2_check_packet(instance)) {
+                        if(instance->base.callback)
+                            instance->base.callback(&instance->base, instance->base.context);
+                        instance->decoder.parser_step = SecPlus_v2DecoderStepReset;
+                    }
+                }
+                instance->decoder.decode_data = 0;
+                instance->decoder.decode_count_bit = 0;
+                manchester_advance(
+                    instance->manchester_saved_state,
+                    ManchesterEventReset,
+                    &instance->manchester_saved_state,
+                    NULL);
+                manchester_advance(
+                    instance->manchester_saved_state,
+                    ManchesterEventLongHigh,
+                    &instance->manchester_saved_state,
+                    NULL);
+                manchester_advance(
+                    instance->manchester_saved_state,
+                    ManchesterEventShortLow,
+                    &instance->manchester_saved_state,
+                    NULL);
+            } else {
+                instance->decoder.parser_step = SecPlus_v2DecoderStepReset;
+            }
+        } else {
+            if(DURATION_DIFF(duration, subghz_protocol_secplus_v2_const.te_short) <
+               subghz_protocol_secplus_v2_const.te_delta) {
+                event = ManchesterEventShortHigh;
+            } else if(
+                DURATION_DIFF(duration, subghz_protocol_secplus_v2_const.te_long) <
+                subghz_protocol_secplus_v2_const.te_delta) {
+                event = ManchesterEventLongHigh;
+            } else {
+                instance->decoder.parser_step = SecPlus_v2DecoderStepReset;
+            }
+        }
+        if(event != ManchesterEventReset) {
+            bool data;
+            bool data_ok = manchester_advance(
+                instance->manchester_saved_state, event, &instance->manchester_saved_state, &data);
+
+            if(data_ok) {
+                instance->decoder.decode_data = (instance->decoder.decode_data << 1) | data;
+                instance->decoder.decode_count_bit++;
+            }
+        }
+        break;
+    }
+}
+
+/** 
+ * Security+ 2.0 half-message decoding
+ * @param data data 
+ * @param roll_array[] return roll_array part
+ * @param fixed[] return fixed part
+ * @return true On success
+ */
+
+static bool
+    subghz_protocol_secplus_v2_decode_half(uint64_t data, uint8_t roll_array[], uint32_t* fixed) {
+    uint8_t order = (data >> 34) & 0x0f;
+    uint8_t invert = (data >> 30) & 0x0f;
+    uint16_t p[3] = {0};
+
+    for(int i = 29; i >= 0; i -= 3) {
+        p[0] = p[0] << 1 | bit_read(data, i);
+        p[1] = p[1] << 1 | bit_read(data, i - 1);
+        p[2] = p[2] << 1 | bit_read(data, i - 2);
+    }
+
+    // selectively invert buffers
+    switch(invert) {
+    case 0x00: // 0b0000 (True, True, False),
+        p[0] = ~p[0] & 0x03FF;
+        p[1] = ~p[1] & 0x03FF;
+        break;
+    case 0x01: // 0b0001 (False, True, False),
+        p[1] = ~p[1] & 0x03FF;
+        break;
+    case 0x02: // 0b0010 (False, False, True),
+        p[2] = ~p[2] & 0x03FF;
+        break;
+    case 0x04: // 0b0100 (True, True, True),
+        p[0] = ~p[0] & 0x03FF;
+        p[1] = ~p[1] & 0x03FF;
+        p[2] = ~p[2] & 0x03FF;
+        break;
+    case 0x05: // 0b0101 (True, False, True),
+    case 0x0a: // 0b1010 (True, False, True),
+        p[0] = ~p[0] & 0x03FF;
+        p[2] = ~p[2] & 0x03FF;
+        break;
+    case 0x06: // 0b0110 (False, True, True),
+        p[1] = ~p[1] & 0x03FF;
+        p[2] = ~p[2] & 0x03FF;
+        break;
+    case 0x08: // 0b1000 (True, False, False),
+        p[0] = ~p[0] & 0x03FF;
+        break;
+    case 0x09: // 0b1001 (False, False, False),
+        break;
+    default:
+        FURI_LOG_E(TAG, "Invert FAIL");
+        return false;
+    }
+
+    uint16_t a = p[0], b = p[1], c = p[2];
+
+    // selectively reorder buffers
+    switch(order) {
+    case 0x06: // 0b0110  2, 1, 0],
+    case 0x09: // 0b1001  2, 1, 0],
+        p[2] = a;
+        p[1] = b;
+        p[0] = c;
+        break;
+    case 0x08: // 0b1000  1, 2, 0],
+    case 0x04: // 0b0100  1, 2, 0],
+        p[1] = a;
+        p[2] = b;
+        p[0] = c;
+        break;
+    case 0x01: // 0b0001 2, 0, 1],
+        p[2] = a;
+        p[0] = b;
+        p[1] = c;
+        break;
+    case 0x00: // 0b0000  0, 2, 1],
+        p[0] = a;
+        p[2] = b;
+        p[1] = c;
+        break;
+    case 0x05: // 0b0101 1, 0, 2],
+        p[1] = a;
+        p[0] = b;
+        p[2] = c;
+        break;
+    case 0x02: // 0b0010 0, 1, 2],
+    case 0x0A: // 0b1010 0, 1, 2],
+        p[0] = a;
+        p[1] = b;
+        p[2] = c;
+        break;
+    default:
+        FURI_LOG_E(TAG, "Order FAIL");
+        return false;
+    }
+
+    data = order << 4 | invert;
+    int k = 0;
+    for(int i = 6; i >= 0; i -= 2) {
+        roll_array[k++] = (data >> i) & 0x03;
+        if(roll_array[k] == 3) {
+            FURI_LOG_E(TAG, "Roll_Array FAIL");
+            return false;
+        }
+    }
+
+    for(int i = 8; i >= 0; i -= 2) {
+        roll_array[k++] = (p[2] >> i) & 0x03;
+        if(roll_array[k] == 3) {
+            FURI_LOG_E(TAG, "Roll_Array FAIL");
+            return false;
+        }
+    }
+
+    fixed[0] = p[0] << 10 | p[1];
+    return true;
+}
+
+/** 
+ * Analysis of received data
+ * @param instance Pointer to a SubGhzBlockGeneric* instance
+ * @param packet_1 first part of the message
+ */
+static void
+    subghz_protocol_secplus_v2_remote_controller(SubGhzBlockGeneric* instance, uint64_t packet_1) {
+    uint32_t fixed_1[1];
+    uint8_t roll_1[9] = {0};
+    uint32_t fixed_2[1];
+    uint8_t roll_2[9] = {0};
+    uint8_t rolling_digits[18] = {0};
+
+    if(subghz_protocol_secplus_v2_decode_half(packet_1, roll_1, fixed_1) &&
+       subghz_protocol_secplus_v2_decode_half(instance->data, roll_2, fixed_2)) {
+        rolling_digits[0] = roll_2[8];
+        rolling_digits[1] = roll_1[8];
+
+        rolling_digits[2] = roll_2[4];
+        rolling_digits[3] = roll_2[5];
+        rolling_digits[4] = roll_2[6];
+        rolling_digits[5] = roll_2[7];
+
+        rolling_digits[6] = roll_1[4];
+        rolling_digits[7] = roll_1[5];
+        rolling_digits[8] = roll_1[6];
+        rolling_digits[9] = roll_1[7];
+
+        rolling_digits[10] = roll_2[0];
+        rolling_digits[11] = roll_2[1];
+        rolling_digits[12] = roll_2[2];
+        rolling_digits[13] = roll_2[3];
+
+        rolling_digits[14] = roll_1[0];
+        rolling_digits[15] = roll_1[1];
+        rolling_digits[16] = roll_1[2];
+        rolling_digits[17] = roll_1[3];
+
+        uint32_t rolling = 0;
+        for(int i = 0; i < 18; i++) {
+            rolling = (rolling * 3) + rolling_digits[i];
+        }
+        // Max value = 2^28 (268435456)
+        if(rolling >= 0x10000000) {
+            FURI_LOG_E(TAG, "Rolling FAIL");
+            instance->cnt = 0;
+            instance->btn = 0;
+            instance->serial = 0;
+        } else {
+            instance->cnt = subghz_protocol_blocks_reverse_key(rolling, 28);
+            instance->btn = fixed_1[0] >> 12;
+            instance->serial = fixed_1[0] << 20 | fixed_2[0];
+        }
+    } else {
+        instance->cnt = 0;
+        instance->btn = 0;
+        instance->serial = 0;
+    }
+}
+
+uint8_t subghz_protocol_decoder_secplus_v2_get_hash_data(void* context) {
+    furi_assert(context);
+    SubGhzProtocolDecoderSecPlus_v2* instance = context;
+    return subghz_protocol_blocks_get_hash_data(
+        &instance->decoder, (instance->decoder.decode_count_bit / 8) + 1);
+}
+
+bool subghz_protocol_decoder_secplus_v2_serialize(
+    void* context,
+    FlipperFormat* flipper_format,
+    uint32_t frequency,
+    FuriHalSubGhzPreset preset) {
+    furi_assert(context);
+    SubGhzProtocolDecoderSecPlus_v2* instance = context;
+    bool res =
+        subghz_block_generic_serialize(&instance->generic, flipper_format, frequency, preset);
+
+    uint8_t key_data[sizeof(uint64_t)] = {0};
+    for(size_t i = 0; i < sizeof(uint64_t); i++) {
+        key_data[sizeof(uint64_t) - i - 1] = (instance->secplus_packet_1 >> i * 8) & 0xFF;
+    }
+
+    if(res &&
+       !flipper_format_write_hex(flipper_format, "Secplus_packet_1", key_data, sizeof(uint64_t))) {
+        FURI_LOG_E(TAG, "Unable to add Secplus_packet_1");
+        res = false;
+    }
+    return res;
+}
+
+bool subghz_protocol_decoder_secplus_v2_deserialize(void* context, FlipperFormat* flipper_format) {
+    furi_assert(context);
+    SubGhzProtocolDecoderSecPlus_v2* instance = context;
+    bool res = false;
+    do {
+        if(!subghz_block_generic_deserialize(&instance->generic, flipper_format)) {
+            FURI_LOG_E(TAG, "Deserialize error");
+            break;
+        }
+        if(!flipper_format_rewind(flipper_format)) {
+            FURI_LOG_E(TAG, "Rewind error");
+            break;
+        }
+        uint8_t key_data[sizeof(uint64_t)] = {0};
+        if(!flipper_format_read_hex(
+               flipper_format, "Secplus_packet_1", key_data, sizeof(uint64_t))) {
+            FURI_LOG_E(TAG, "Missing Secplus_packet_1");
+            break;
+        }
+        for(uint8_t i = 0; i < sizeof(uint64_t); i++) {
+            instance->secplus_packet_1 = instance->secplus_packet_1 << 8 | key_data[i];
+        }
+        res = true;
+    } while(false);
+
+    return res;
+}
+
+void subghz_protocol_decoder_secplus_v2_get_string(void* context, string_t output) {
+    furi_assert(context);
+    SubGhzProtocolDecoderSecPlus_v2* instance = context;
+    subghz_protocol_secplus_v2_remote_controller(&instance->generic, instance->secplus_packet_1);
+
+    string_cat_printf(
+        output,
+        "%s %db\r\n"
+        "Pk1:0x%lX%08lX\r\n"
+        "Pk2:0x%lX%08lX\r\n"
+        "Sn:0x%08lX  Btn:0x%01X\r\n"
+        "Cnt:0x%03X\r\n",
+
+        instance->generic.protocol_name,
+        instance->generic.data_count_bit,
+        (uint32_t)(instance->secplus_packet_1 >> 32),
+        (uint32_t)instance->secplus_packet_1,
+        (uint32_t)(instance->generic.data >> 32),
+        (uint32_t)instance->generic.data,
+        instance->generic.serial,
+        instance->generic.btn,
+        instance->generic.cnt);
+}
diff --git a/lib/subghz/protocols/secplus_v2.h b/lib/subghz/protocols/secplus_v2.h
new file mode 100644
index 00000000..dbb1e1bd
--- /dev/null
+++ b/lib/subghz/protocols/secplus_v2.h
@@ -0,0 +1,74 @@
+#pragma once
+#include "base.h"
+
+#define SUBGHZ_PROTOCOL_SECPLUS_V2_NAME "Security+ 2.0"
+
+typedef struct SubGhzProtocolDecoderSecPlus_v2 SubGhzProtocolDecoderSecPlus_v2;
+typedef struct SubGhzProtocolEncoderSecPlus_v2 SubGhzProtocolEncoderSecPlus_v2;
+
+extern const SubGhzProtocolDecoder subghz_protocol_secplus_v2_decoder;
+extern const SubGhzProtocolEncoder subghz_protocol_secplus_v2_encoder;
+extern const SubGhzProtocol subghz_protocol_secplus_v2;
+
+/**
+ * Allocate SubGhzProtocolDecoderSecPlus_v2.
+ * @param environment Pointer to a SubGhzEnvironment instance
+ * @return SubGhzProtocolDecoderSecPlus_v2* pointer to a SubGhzProtocolDecoderSecPlus_v2 instance
+ */
+void* subghz_protocol_decoder_secplus_v2_alloc(SubGhzEnvironment* environment);
+
+/**
+ * Free SubGhzProtocolDecoderSecPlus_v2.
+ * @param context Pointer to a SubGhzProtocolDecoderSecPlus_v2 instance
+ */
+void subghz_protocol_decoder_secplus_v2_free(void* context);
+
+/**
+ * Reset decoder SubGhzProtocolDecoderSecPlus_v2.
+ * @param context Pointer to a SubGhzProtocolDecoderSecPlus_v2 instance
+ */
+void subghz_protocol_decoder_secplus_v2_reset(void* context);
+
+/**
+ * Parse a raw sequence of levels and durations received from the air.
+ * @param context Pointer to a SubGhzProtocolDecoderSecPlus_v2 instance
+ * @param level Signal level true-high false-low
+ * @param duration Duration of this level in, us
+ */
+void subghz_protocol_decoder_secplus_v2_feed(void* context, bool level, uint32_t duration);
+
+/**
+ * Getting the hash sum of the last randomly received parcel.
+ * @param context Pointer to a SubGhzProtocolDecoderSecPlus_v2 instance
+ * @return hash Hash sum
+ */
+uint8_t subghz_protocol_decoder_secplus_v2_get_hash_data(void* context);
+
+/**
+ * Serialize data SubGhzProtocolDecoderSecPlus_v2.
+ * @param context Pointer to a SubGhzProtocolDecoderSecPlus_v2 instance
+ * @param flipper_format Pointer to a FlipperFormat instance
+ * @param frequency The frequency at which the signal was received, Hz
+ * @param preset The modulation on which the signal was received, FuriHalSubGhzPreset
+ * @return true On success
+ */
+bool subghz_protocol_decoder_secplus_v2_serialize(
+    void* context,
+    FlipperFormat* flipper_format,
+    uint32_t frequency,
+    FuriHalSubGhzPreset preset);
+
+/**
+ * Deserialize data SubGhzProtocolDecoderSecPlus_v2.
+ * @param context Pointer to a SubGhzProtocolDecoderSecPlus_v2 instance
+ * @param flipper_format Pointer to a FlipperFormat instance
+ * @return true On success
+ */
+bool subghz_protocol_decoder_secplus_v2_deserialize(void* context, FlipperFormat* flipper_format);
+
+/**
+ * Getting a textual representation of the received data.
+ * @param context Pointer to a SubGhzProtocolDecoderSecPlus_v2 instance
+ * @param output Resulting text
+ */
+void subghz_protocol_decoder_secplus_v2_get_string(void* context, string_t output);
diff --git a/lib/subghz/protocols/somfy_keytis.c b/lib/subghz/protocols/somfy_keytis.c
index 9f58d734..764e8147 100644
--- a/lib/subghz/protocols/somfy_keytis.c
+++ b/lib/subghz/protocols/somfy_keytis.c
@@ -75,6 +75,7 @@ const SubGhzProtocol subghz_protocol_somfy_keytis = {
 };
 
 void* subghz_protocol_decoder_somfy_keytis_alloc(SubGhzEnvironment* environment) {
+    UNUSED(environment);
     SubGhzProtocolDecoderSomfyKeytis* instance = malloc(sizeof(SubGhzProtocolDecoderSomfyKeytis));
     instance->base.protocol = &subghz_protocol_somfy_keytis;
     instance->generic.protocol_name = instance->base.protocol->name;
diff --git a/lib/subghz/protocols/somfy_telis.c b/lib/subghz/protocols/somfy_telis.c
index 4f1212bc..63407427 100644
--- a/lib/subghz/protocols/somfy_telis.c
+++ b/lib/subghz/protocols/somfy_telis.c
@@ -74,6 +74,7 @@ const SubGhzProtocol subghz_protocol_somfy_telis = {
 };
 
 void* subghz_protocol_decoder_somfy_telis_alloc(SubGhzEnvironment* environment) {
+    UNUSED(environment);
     SubGhzProtocolDecoderSomfyTelis* instance = malloc(sizeof(SubGhzProtocolDecoderSomfyTelis));
     instance->base.protocol = &subghz_protocol_somfy_telis;
     instance->generic.protocol_name = instance->base.protocol->name;
diff --git a/lib/subghz/subghz_file_encoder_worker.c b/lib/subghz/subghz_file_encoder_worker.c
index 91538e1f..83cf90b7 100644
--- a/lib/subghz/subghz_file_encoder_worker.c
+++ b/lib/subghz/subghz_file_encoder_worker.c
@@ -19,7 +19,6 @@ struct SubGhzFileEncoderWorker {
     volatile bool worker_running;
     volatile bool worker_stoping;
     bool level;
-    int32_t duration;
     string_t str_data;
     string_t file_path;
 
@@ -37,50 +36,43 @@ void subghz_file_encoder_worker_callback_end(
     instance->context_end = context_end;
 }
 
-void subghz_file_encoder_worker_add_livel_duration(
+void subghz_file_encoder_worker_add_level_duration(
     SubGhzFileEncoderWorker* instance,
     int32_t duration) {
     bool res = true;
     if(duration < 0 && !instance->level) {
-        instance->duration += duration;
         res = false;
     } else if(duration > 0 && instance->level) {
-        instance->duration += duration;
         res = false;
-    } else if(duration == 0) {
-        instance->duration = 0;
     }
 
     if(res) {
         instance->level = !instance->level;
-        instance->duration += duration;
-        xStreamBufferSend(instance->stream, &instance->duration, sizeof(int32_t), 10);
-        instance->duration = 0;
+        xStreamBufferSend(instance->stream, &duration, sizeof(int32_t), 100);
+    } else {
+        FURI_LOG_E(TAG, "Invalid level in the stream");
     }
 }
 
-bool subghz_file_encoder_worker_data_parse(
-    SubGhzFileEncoderWorker* instance,
-    const char* strStart,
-    size_t len) {
+bool subghz_file_encoder_worker_data_parse(SubGhzFileEncoderWorker* instance, const char* strStart) {
     char* str1;
-    size_t ind_start = (size_t)strStart; //store the start address of the beginning of the line
     bool res = false;
+    // Line sample: "RAW_Data: -1, 2, -2..."
+
+    // Look for a key in the line
+    str1 = strstr(strStart, "RAW_Data: ");
 
-    str1 = strstr(
-        strStart, "RAW_Data: "); //looking for the beginning of the desired title in the line
     if(str1 != NULL) {
-        str1 = strchr(
-            str1,
-            ' '); //if found, shift the pointer by 1 element per line "RAW_Data: -1, 2, -2..."
-        while(
-            strchr(str1, ' ') != NULL &&
-            ((size_t)str1 <
-             (len +
-              ind_start))) { //check that there is still an element in the line and that it has not gone beyond the line
+        // Skip key
+        str1 = strchr(str1, ' ');
+
+        // Check that there is still an element in the line
+        while(strchr(str1, ' ') != NULL) {
             str1 = strchr(str1, ' ');
-            str1 += 1; //if found, shift the pointer by next element per line
-            subghz_file_encoder_worker_add_livel_duration(instance, atoi(str1));
+
+            // Skip space
+            str1 += 1;
+            subghz_file_encoder_worker_add_level_duration(instance, atoi(str1));
         }
         res = true;
     }
@@ -148,18 +140,16 @@ static int32_t subghz_file_encoder_worker_thread(void* context) {
             if(stream_read_line(stream, instance->str_data)) {
                 string_strim(instance->str_data);
                 if(!subghz_file_encoder_worker_data_parse(
-                       instance,
-                       string_get_cstr(instance->str_data),
-                       strlen(string_get_cstr(instance->str_data)))) {
+                       instance, string_get_cstr(instance->str_data))) {
                     //to stop DMA correctly
-                    subghz_file_encoder_worker_add_livel_duration(instance, LEVEL_DURATION_RESET);
-                    subghz_file_encoder_worker_add_livel_duration(instance, LEVEL_DURATION_RESET);
+                    subghz_file_encoder_worker_add_level_duration(instance, LEVEL_DURATION_RESET);
+                    subghz_file_encoder_worker_add_level_duration(instance, LEVEL_DURATION_RESET);
 
                     break;
                 }
             } else {
-                subghz_file_encoder_worker_add_livel_duration(instance, LEVEL_DURATION_RESET);
-                subghz_file_encoder_worker_add_livel_duration(instance, LEVEL_DURATION_RESET);
+                subghz_file_encoder_worker_add_level_duration(instance, LEVEL_DURATION_RESET);
+                subghz_file_encoder_worker_add_level_duration(instance, LEVEL_DURATION_RESET);
                 break;
             }
         }
diff --git a/lib/subghz/subghz_keystore.c b/lib/subghz/subghz_keystore.c
index 1acb6ba5..d3903bc5 100644
--- a/lib/subghz/subghz_keystore.c
+++ b/lib/subghz/subghz_keystore.c
@@ -303,7 +303,7 @@ bool subghz_keystore_save(SubGhzKeystore* instance, const char* file_name, uint8
                 }
                 // HEX Encode encrypted line
                 const char xx[] = "0123456789ABCDEF";
-                for(size_t i = 0; i < len; i++) {
+                for(int i = 0; i < len; i++) {
                     size_t cursor = len - i - 1;
                     size_t hex_cursor = len * 2 - i * 2 - 1;
                     encrypted_line[hex_cursor] = xx[encrypted_line[cursor] & 0xF];
@@ -601,4 +601,4 @@ bool subghz_keystore_raw_get_data(const char* file_name, size_t offset, uint8_t*
     string_clear(str_temp);
 
     return result;
-}
\ No newline at end of file
+}
diff --git a/lib/subghz/subghz_tx_rx_worker.c b/lib/subghz/subghz_tx_rx_worker.c
index aad28b88..863aaa31 100644
--- a/lib/subghz/subghz_tx_rx_worker.c
+++ b/lib/subghz/subghz_tx_rx_worker.c
@@ -83,7 +83,10 @@ bool subghz_tx_rx_worker_rx(SubGhzTxRxWorker* instance, uint8_t* data, uint8_t*
 
     if(furi_hal_subghz_rx_pipe_not_empty()) {
         FURI_LOG_I(
-            TAG, "RSSI: %03.1fdbm LQI: %d", furi_hal_subghz_get_rssi(), furi_hal_subghz_get_lqi());
+            TAG,
+            "RSSI: %03.1fdbm LQI: %d",
+            (double)furi_hal_subghz_get_rssi(),
+            furi_hal_subghz_get_lqi());
         if(furi_hal_subghz_is_rx_data_crc_valid()) {
             furi_hal_subghz_read_packet(data, size);
             ret = true;
diff --git a/lib/subghz/transmitter.c b/lib/subghz/transmitter.c
index c74c38ea..0dc2bacd 100644
--- a/lib/subghz/transmitter.c
+++ b/lib/subghz/transmitter.c
@@ -3,6 +3,11 @@
 #include "protocols/base.h"
 #include "protocols/registry.h"
 
+struct SubGhzTransmitter {
+    const SubGhzProtocol* protocol;
+    SubGhzProtocolEncoderBase* protocol_instance;
+};
+
 SubGhzTransmitter*
     subghz_transmitter_alloc_init(SubGhzEnvironment* environment, const char* protocol_name) {
     SubGhzTransmitter* instance = NULL;
@@ -23,6 +28,11 @@ void subghz_transmitter_free(SubGhzTransmitter* instance) {
     free(instance);
 }
 
+SubGhzProtocolEncoderBase* subghz_transmitter_get_protocol_instance(SubGhzTransmitter* instance) {
+    furi_assert(instance);
+    return instance->protocol_instance;
+}
+
 bool subghz_transmitter_stop(SubGhzTransmitter* instance) {
     furi_assert(instance);
     bool ret = false;
@@ -46,6 +56,5 @@ bool subghz_transmitter_deserialize(SubGhzTransmitter* instance, FlipperFormat*
 
 LevelDuration subghz_transmitter_yield(void* context) {
     SubGhzTransmitter* instance = context;
-
     return instance->protocol->encoder->yield(instance->protocol_instance);
 }
diff --git a/lib/subghz/transmitter.h b/lib/subghz/transmitter.h
index 205a3eee..53f10b07 100644
--- a/lib/subghz/transmitter.h
+++ b/lib/subghz/transmitter.h
@@ -6,11 +6,6 @@
 
 typedef struct SubGhzTransmitter SubGhzTransmitter;
 
-struct SubGhzTransmitter {
-    const SubGhzProtocol* protocol;
-    SubGhzProtocolEncoderBase* protocol_instance;
-};
-
 /**
  * Allocate and init SubGhzTransmitter.
  * @param environment Pointer to a SubGhzEnvironment instance
@@ -25,6 +20,11 @@ SubGhzTransmitter*
  */
 void subghz_transmitter_free(SubGhzTransmitter* instance);
 
+/** Get protocol instance.
+ * @param instance Pointer to a SubGhzTransmitter instance
+ */
+SubGhzProtocolEncoderBase* subghz_transmitter_get_protocol_instance(SubGhzTransmitter* instance);
+
 /**
  * Forced transmission stop.
  * @param instance Pointer to a SubGhzTransmitter instance
diff --git a/lib/toolbox/args.c b/lib/toolbox/args.c
index 8d6295dd..287ca7ef 100644
--- a/lib/toolbox/args.c
+++ b/lib/toolbox/args.c
@@ -92,4 +92,4 @@ bool args_read_hex_bytes(string_t args, uint8_t* bytes, size_t bytes_count) {
     }
 
     return result;
-}
\ No newline at end of file
+}
diff --git a/lib/toolbox/args.h b/lib/toolbox/args.h
index 4ae1e1db..dc72bdaf 100644
--- a/lib/toolbox/args.h
+++ b/lib/toolbox/args.h
@@ -78,4 +78,4 @@ bool args_char_to_hex(char hi_nibble, char low_nibble, uint8_t* byte);
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/lib/toolbox/dir_walk.c b/lib/toolbox/dir_walk.c
new file mode 100644
index 00000000..2efbc0f1
--- /dev/null
+++ b/lib/toolbox/dir_walk.c
@@ -0,0 +1,152 @@
+#include "dir_walk.h"
+#include <m-list.h>
+
+LIST_DEF(DirIndexList, uint32_t);
+
+struct DirWalk {
+    File* file;
+    string_t path;
+    DirIndexList_t index_list;
+    uint32_t current_index;
+    bool recursive;
+    DirWalkFilterCb filter_cb;
+    void* filter_context;
+};
+
+DirWalk* dir_walk_alloc(Storage* storage) {
+    DirWalk* dir_walk = malloc(sizeof(DirWalk));
+    string_init(dir_walk->path);
+    dir_walk->file = storage_file_alloc(storage);
+    DirIndexList_init(dir_walk->index_list);
+    dir_walk->recursive = true;
+    dir_walk->filter_cb = NULL;
+    return dir_walk;
+}
+
+void dir_walk_free(DirWalk* dir_walk) {
+    storage_file_free(dir_walk->file);
+    string_clear(dir_walk->path);
+    DirIndexList_clear(dir_walk->index_list);
+    free(dir_walk);
+}
+
+void dir_walk_set_recursive(DirWalk* dir_walk, bool recursive) {
+    dir_walk->recursive = recursive;
+}
+
+void dir_walk_set_filter_cb(DirWalk* dir_walk, DirWalkFilterCb cb, void* context) {
+    dir_walk->filter_cb = cb;
+    dir_walk->filter_context = context;
+}
+
+bool dir_walk_open(DirWalk* dir_walk, const char* path) {
+    string_set(dir_walk->path, path);
+    dir_walk->current_index = 0;
+    return storage_dir_open(dir_walk->file, path);
+}
+
+static bool dir_walk_filter(DirWalk* dir_walk, const char* name, FileInfo* fileinfo) {
+    if(dir_walk->filter_cb) {
+        return dir_walk->filter_cb(name, fileinfo, dir_walk->filter_context);
+    } else {
+        return true;
+    }
+}
+
+static DirWalkResult dir_walk_iter(DirWalk* dir_walk, string_t return_path, FileInfo* fileinfo) {
+    DirWalkResult result = DirWalkError;
+    char* name = malloc(256);
+    FileInfo info;
+    bool end = false;
+
+    while(!end) {
+        storage_dir_read(dir_walk->file, &info, name, 255);
+
+        if(storage_file_get_error(dir_walk->file) == FSE_OK) {
+            result = DirWalkOK;
+            dir_walk->current_index++;
+
+            if(dir_walk_filter(dir_walk, name, &info)) {
+                if(return_path != NULL) {
+                    string_printf(return_path, "%s/%s", string_get_cstr(dir_walk->path), name);
+                }
+
+                if(fileinfo != NULL) {
+                    memcpy(fileinfo, &info, sizeof(FileInfo));
+                }
+
+                end = true;
+            }
+
+            if((info.flags & FSF_DIRECTORY) && dir_walk->recursive) {
+                // step into
+                DirIndexList_push_back(dir_walk->index_list, dir_walk->current_index);
+                dir_walk->current_index = 0;
+                storage_dir_close(dir_walk->file);
+
+                string_cat_printf(dir_walk->path, "/%s", name);
+                storage_dir_open(dir_walk->file, string_get_cstr(dir_walk->path));
+            }
+        } else if(storage_file_get_error(dir_walk->file) == FSE_NOT_EXIST) {
+            if(DirIndexList_size(dir_walk->index_list) == 0) {
+                // last
+                result = DirWalkLast;
+                end = true;
+            } else {
+                // step out
+                uint32_t index;
+                DirIndexList_pop_back(&index, dir_walk->index_list);
+                dir_walk->current_index = 0;
+
+                storage_dir_close(dir_walk->file);
+
+                size_t last_char = string_search_rchar(dir_walk->path, '/');
+                if(last_char != STRING_FAILURE) {
+                    string_left(dir_walk->path, last_char);
+                }
+
+                storage_dir_open(dir_walk->file, string_get_cstr(dir_walk->path));
+
+                // rewind
+                while(true) {
+                    if(index == dir_walk->current_index) {
+                        result = DirWalkOK;
+                        break;
+                    }
+
+                    if(!storage_dir_read(dir_walk->file, &info, name, 255)) {
+                        result = DirWalkError;
+                        end = true;
+                        break;
+                    }
+
+                    dir_walk->current_index++;
+                }
+            }
+        } else {
+            result = DirWalkError;
+            end = true;
+        }
+    }
+
+    free(name);
+    return result;
+}
+
+FS_Error dir_walk_get_error(DirWalk* dir_walk) {
+    return storage_file_get_error(dir_walk->file);
+}
+
+DirWalkResult dir_walk_read(DirWalk* dir_walk, string_t return_path, FileInfo* fileinfo) {
+    return dir_walk_iter(dir_walk, return_path, fileinfo);
+}
+
+void dir_walk_close(DirWalk* dir_walk) {
+    if(storage_file_is_open(dir_walk->file)) {
+        storage_dir_close(dir_walk->file);
+    }
+
+    DirIndexList_reset(dir_walk->index_list);
+    string_reset(dir_walk->path);
+    dir_walk->current_index = 0;
+}
diff --git a/lib/toolbox/dir_walk.h b/lib/toolbox/dir_walk.h
new file mode 100644
index 00000000..fc651042
--- /dev/null
+++ b/lib/toolbox/dir_walk.h
@@ -0,0 +1,79 @@
+#pragma once
+#include <storage/storage.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct DirWalk DirWalk;
+
+typedef enum {
+    DirWalkOK, /**< OK */
+    DirWalkError, /**< Error */
+    DirWalkLast, /**< Last element */
+} DirWalkResult;
+
+typedef bool (*DirWalkFilterCb)(const char* name, FileInfo* fileinfo, void* ctx);
+
+/**
+ * Allocate DirWalk
+ * @param storage 
+ * @return DirWalk* 
+ */
+DirWalk* dir_walk_alloc(Storage* storage);
+
+/**
+ * Free DirWalk
+ * @param dir_walk 
+ */
+void dir_walk_free(DirWalk* dir_walk);
+
+/**
+ * Set recursive mode (true by default)
+ * @param dir_walk 
+ * @param recursive 
+ */
+void dir_walk_set_recursive(DirWalk* dir_walk, bool recursive);
+
+/**
+ * Set filter callback (Should return true if the data is valid)
+ * @param dir_walk 
+ * @param cb 
+ * @param context 
+ */
+void dir_walk_set_filter_cb(DirWalk* dir_walk, DirWalkFilterCb cb, void* context);
+
+/**
+ * Open directory 
+ * @param dir_walk 
+ * @param path 
+ * @return true 
+ * @return false 
+ */
+bool dir_walk_open(DirWalk* dir_walk, const char* path);
+
+/**
+ * Get error id
+ * @param dir_walk 
+ * @return FS_Error 
+ */
+FS_Error dir_walk_get_error(DirWalk* dir_walk);
+
+/**
+ * Read next element from directory
+ * @param dir_walk 
+ * @param return_path 
+ * @param fileinfo 
+ * @return DirWalkResult 
+ */
+DirWalkResult dir_walk_read(DirWalk* dir_walk, string_t return_path, FileInfo* fileinfo);
+
+/**
+ * Close directory
+ * @param dir_walk 
+ */
+void dir_walk_close(DirWalk* dir_walk);
+
+#ifdef __cplusplus
+}
+#endif
\ No newline at end of file
diff --git a/lib/toolbox/hex.c b/lib/toolbox/hex.c
index 8b443e12..739eb30b 100644
--- a/lib/toolbox/hex.c
+++ b/lib/toolbox/hex.c
@@ -25,4 +25,4 @@ bool hex_chars_to_uint8(char hi, char low, uint8_t* value) {
     } else {
         return false;
     }
-}
\ No newline at end of file
+}
diff --git a/lib/toolbox/hex.h b/lib/toolbox/hex.h
index ac67549a..ca10f2be 100644
--- a/lib/toolbox/hex.h
+++ b/lib/toolbox/hex.h
@@ -25,4 +25,4 @@ bool hex_chars_to_uint8(char hi, char low, uint8_t* value);
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/lib/toolbox/level_duration.h b/lib/toolbox/level_duration.h
index bef0b6ec..9406cef3 100644
--- a/lib/toolbox/level_duration.h
+++ b/lib/toolbox/level_duration.h
@@ -79,4 +79,4 @@ static inline uint32_t level_duration_get_duration(LevelDuration level_duration)
     return (level_duration >= 0) ? level_duration : -level_duration;
 }
 
-#endif
\ No newline at end of file
+#endif
diff --git a/lib/toolbox/manchester_decoder.h b/lib/toolbox/manchester_decoder.h
index 580d88e2..4fb6dbc6 100644
--- a/lib/toolbox/manchester_decoder.h
+++ b/lib/toolbox/manchester_decoder.h
@@ -28,4 +28,4 @@ bool manchester_advance(
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/lib/toolbox/manchester_encoder.c b/lib/toolbox/manchester_encoder.c
index c0fc4ca9..c22e4a17 100644
--- a/lib/toolbox/manchester_encoder.c
+++ b/lib/toolbox/manchester_encoder.c
@@ -51,4 +51,4 @@ bool manchester_encoder_advance(
 ManchesterEncoderResult manchester_encoder_finish(ManchesterEncoderState* state) {
     state->step = 0;
     return (state->prev_bit << 1) + state->prev_bit;
-}
\ No newline at end of file
+}
diff --git a/lib/toolbox/manchester_encoder.h b/lib/toolbox/manchester_encoder.h
index 639d9b81..57ea8fb4 100644
--- a/lib/toolbox/manchester_encoder.h
+++ b/lib/toolbox/manchester_encoder.h
@@ -29,4 +29,4 @@ ManchesterEncoderResult manchester_encoder_finish(ManchesterEncoderState* state)
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/lib/toolbox/md5.c b/lib/toolbox/md5.c
index b873ee0f..3cf7cf05 100644
--- a/lib/toolbox/md5.c
+++ b/lib/toolbox/md5.c
@@ -296,4 +296,4 @@ void md5(const unsigned char* input, size_t ilen, unsigned char output[16]) {
     md5_finish(&ctx, output);
 
     memset(&ctx, 0, sizeof(md5_context));
-}
\ No newline at end of file
+}
diff --git a/lib/toolbox/md5.h b/lib/toolbox/md5.h
index 7878881e..fe53db8d 100644
--- a/lib/toolbox/md5.h
+++ b/lib/toolbox/md5.h
@@ -80,4 +80,4 @@ void md5(const unsigned char* input, size_t ilen, unsigned char output[16]);
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/lib/toolbox/random_name.c b/lib/toolbox/random_name.c
index 34a53867..b581bb97 100644
--- a/lib/toolbox/random_name.c
+++ b/lib/toolbox/random_name.c
@@ -33,8 +33,8 @@ void set_random_name(char* name, uint8_t max_name_size) {
         "opening",
         "crack",
     };
-    uint8_t prefix_i = rand() % SIZEOF_ARRAY(prefix);
-    uint8_t suffix_i = rand() % SIZEOF_ARRAY(suffix);
+    uint8_t prefix_i = rand() % COUNT_OF(prefix);
+    uint8_t suffix_i = rand() % COUNT_OF(suffix);
 
     sniprintf(name, max_name_size, "%s_%s", prefix[prefix_i], suffix[suffix_i]);
     // Set first symbol to upper case
diff --git a/lib/toolbox/stream/file_stream.c b/lib/toolbox/stream/file_stream.c
index 340cb61a..70db8af9 100644
--- a/lib/toolbox/stream/file_stream.c
+++ b/lib/toolbox/stream/file_stream.c
@@ -228,4 +228,4 @@ static bool file_stream_delete_and_insert(
     string_clear(scratch_name);
 
     return result;
-}
\ No newline at end of file
+}
diff --git a/lib/toolbox/stream/file_stream.h b/lib/toolbox/stream/file_stream.h
index ec371a53..4531b3e7 100644
--- a/lib/toolbox/stream/file_stream.h
+++ b/lib/toolbox/stream/file_stream.h
@@ -44,4 +44,4 @@ FS_Error file_stream_get_error(Stream* stream);
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/lib/toolbox/stream/stream.c b/lib/toolbox/stream/stream.c
index 4aee8acd..982c4983 100644
--- a/lib/toolbox/stream/stream.c
+++ b/lib/toolbox/stream/stream.c
@@ -217,7 +217,7 @@ bool stream_delete_and_insert_vaformat(
     string_init_vprintf(data, format, args);
     StreamWriteData write_data = {
         .data = (uint8_t*)string_get_cstr(data), .size = string_size(data)};
-    bool result = stream_delete_and_insert(stream, 0, stream_write_struct, &write_data);
+    bool result = stream_delete_and_insert(stream, delete_size, stream_write_struct, &write_data);
     string_clear(data);
 
     return result;
@@ -333,4 +333,4 @@ void stream_dump_data(Stream* stream) {
     printf("\r\n");
     printf("DATA END\r\n");
     stream_seek(stream, tell, StreamOffsetFromStart);
-}
\ No newline at end of file
+}
diff --git a/lib/toolbox/stream/stream.h b/lib/toolbox/stream/stream.h
index 97ded8bd..c10e9f5e 100644
--- a/lib/toolbox/stream/stream.h
+++ b/lib/toolbox/stream/stream.h
@@ -333,4 +333,4 @@ void stream_dump_data(Stream* stream);
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/lib/toolbox/stream/stream_i.h b/lib/toolbox/stream/stream_i.h
index a62e174c..178d3fee 100644
--- a/lib/toolbox/stream/stream_i.h
+++ b/lib/toolbox/stream/stream_i.h
@@ -7,7 +7,7 @@
 extern "C" {
 #endif
 
-#define STREAM_CACHE_SIZE 512
+#define STREAM_CACHE_SIZE 512u
 
 typedef struct StreamVTable StreamVTable;
 
diff --git a/lib/toolbox/stream/string_stream.c b/lib/toolbox/stream/string_stream.c
index 5fec06c3..3244b7ba 100644
--- a/lib/toolbox/stream/string_stream.c
+++ b/lib/toolbox/stream/string_stream.c
@@ -176,4 +176,4 @@ static size_t string_stream_write_char(StringStream* stream, char c) {
     stream->index++;
 
     return 1;
-}
\ No newline at end of file
+}
diff --git a/lib/toolbox/stream/string_stream.h b/lib/toolbox/stream/string_stream.h
index 1827258d..6cccfa6c 100644
--- a/lib/toolbox/stream/string_stream.h
+++ b/lib/toolbox/stream/string_stream.h
@@ -15,4 +15,4 @@ Stream* string_stream_alloc();
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/lib/toolbox/tar/tar_archive.c b/lib/toolbox/tar/tar_archive.c
index 315497e1..91d2c812 100644
--- a/lib/toolbox/tar/tar_archive.c
+++ b/lib/toolbox/tar/tar_archive.c
@@ -345,4 +345,4 @@ bool tar_archive_add_dir(TarArchive* archive, const char* fs_full_path, const ch
     free(name);
     storage_file_free(directory);
     return success;
-}
\ No newline at end of file
+}
diff --git a/lib/toolbox/tar/tar_archive.h b/lib/toolbox/tar/tar_archive.h
index a8976181..d9b0f321 100644
--- a/lib/toolbox/tar/tar_archive.h
+++ b/lib/toolbox/tar/tar_archive.h
@@ -63,4 +63,4 @@ bool tar_archive_finalize(TarArchive* archive);
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/lib/toolbox/version.c b/lib/toolbox/version.c
index 902be876..40c48370 100644
--- a/lib/toolbox/version.c
+++ b/lib/toolbox/version.c
@@ -55,4 +55,4 @@ uint8_t version_get_target(const Version* v) {
 
 bool version_get_dirty_flag(const Version* v) {
     return v ? v->build_is_dirty : version.build_is_dirty;
-}
\ No newline at end of file
+}
diff --git a/lib/toolbox/version.h b/lib/toolbox/version.h
index 7e82e45d..652ff3fe 100644
--- a/lib/toolbox/version.h
+++ b/lib/toolbox/version.h
@@ -84,4 +84,4 @@ bool version_get_dirty_flag(const Version* v);
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/lib/u8g2/u8g2_glue.c b/lib/u8g2/u8g2_glue.c
index cc186663..33d30f29 100644
--- a/lib/u8g2/u8g2_glue.c
+++ b/lib/u8g2/u8g2_glue.c
@@ -3,6 +3,8 @@
 #include <furi_hal.h>
 
 uint8_t u8g2_gpio_and_delay_stm32(u8x8_t* u8x8, uint8_t msg, uint8_t arg_int, void* arg_ptr) {
+    UNUSED(u8x8);
+    UNUSED(arg_ptr);
     switch(msg) {
     case U8X8_MSG_GPIO_AND_DELAY_INIT:
         /* HAL initialization contains all what we need so we can skip this part. */
@@ -27,6 +29,7 @@ uint8_t u8g2_gpio_and_delay_stm32(u8x8_t* u8x8, uint8_t msg, uint8_t arg_int, vo
 }
 
 uint8_t u8x8_hw_spi_stm32(u8x8_t* u8x8, uint8_t msg, uint8_t arg_int, void* arg_ptr) {
+    UNUSED(u8x8);
     switch(msg) {
     case U8X8_MSG_BYTE_SEND:
         furi_hal_spi_bus_tx(&furi_hal_spi_bus_handle_display, (uint8_t*)arg_ptr, arg_int, 10000);
diff --git a/lib/u8g2/u8x8_display.c b/lib/u8g2/u8x8_display.c
index 76a099b1..83b0ca41 100644
--- a/lib/u8g2/u8x8_display.c
+++ b/lib/u8g2/u8x8_display.c
@@ -147,4 +147,4 @@ void u8x8_ClearLine(u8x8_t* u8x8, uint8_t line) {
         u8x8->display_cb(
             u8x8, U8X8_MSG_DISPLAY_DRAW_TILE, u8x8->display_info->tile_width, (void*)&tile);
     }
-}
\ No newline at end of file
+}
diff --git a/lib/u8g2/u8x8_gpio.c b/lib/u8g2/u8x8_gpio.c
index bb1470d3..1fcc0a39 100644
--- a/lib/u8g2/u8x8_gpio.c
+++ b/lib/u8g2/u8x8_gpio.c
@@ -44,4 +44,4 @@ void u8x8_gpio_Delay(u8x8_t *u8x8, uint8_t msg, uint8_t dly)
 {
   u8x8->gpio_and_delay_cb(u8x8, msg, dly, NULL);
 }
-*/
\ No newline at end of file
+*/
diff --git a/lib/update_util/update_manifest.c b/lib/update_util/update_manifest.c
index 3d05d0ba..2fe0a1ef 100644
--- a/lib/update_util/update_manifest.c
+++ b/lib/update_util/update_manifest.c
@@ -26,6 +26,7 @@ UpdateManifest* update_manifest_alloc() {
     string_init(update_manifest->staged_loader_file);
     string_init(update_manifest->resource_bundle);
     update_manifest->target = 0;
+    update_manifest->manifest_version = 0;
     memset(update_manifest->ob_reference.bytes, 0, FURI_HAL_FLASH_OB_RAW_SIZE_BYTES);
     memset(update_manifest->ob_compare_mask.bytes, 0, FURI_HAL_FLASH_OB_RAW_SIZE_BYTES);
     memset(update_manifest->ob_write_mask.bytes, 0, FURI_HAL_FLASH_OB_RAW_SIZE_BYTES);
@@ -49,12 +50,11 @@ static bool
     furi_assert(flipper_file);
 
     string_t filetype;
-    uint32_t version = 0;
 
     // TODO: compare filetype?
     string_init(filetype);
     update_manifest->valid =
-        flipper_format_read_header(flipper_file, filetype, &version) &&
+        flipper_format_read_header(flipper_file, filetype, &update_manifest->manifest_version) &&
         flipper_format_read_string(flipper_file, MANIFEST_KEY_INFO, update_manifest->version) &&
         flipper_format_read_uint32(
             flipper_file, MANIFEST_KEY_TARGET, &update_manifest->target, 1) &&
@@ -68,7 +68,7 @@ static bool
     string_clear(filetype);
 
     if(update_manifest->valid) {
-        /* Optional fields - we can have dfu, radio, or both */
+        /* Optional fields - we can have dfu, radio, resources, or any combination */
         flipper_format_read_string(
             flipper_file, MANIFEST_KEY_DFU_FILE, update_manifest->firmware_dfu_image);
         flipper_format_read_string(
@@ -131,8 +131,7 @@ static bool ob_data_check_masked_values_valid(
     const FuriHalFlashRawOptionByteData* mask) {
     bool valid = true;
     for(size_t idx = 0; valid && (idx < FURI_HAL_FLASH_OB_TOTAL_VALUES); ++idx) {
-        valid &= (data->obs[idx]. dword & mask->obs[idx].dword) ==
-                 data->obs[idx].dword;
+        valid &= (data->obs[idx].dword & mask->obs[idx].dword) == data->obs[idx].dword;
     }
     return valid;
 }
@@ -179,4 +178,4 @@ bool update_manifest_init_mem(
     flipper_format_free(flipper_file);
 
     return update_manifest->valid;
-}
\ No newline at end of file
+}
diff --git a/lib/update_util/update_manifest.h b/lib/update_util/update_manifest.h
index d03c71d2..2b1e6857 100644
--- a/lib/update_util/update_manifest.h
+++ b/lib/update_util/update_manifest.h
@@ -12,7 +12,7 @@ extern "C" {
 /* Paths don't include /ext -- because at startup SD card is mounted as root */
 #define UPDATE_DIR_DEFAULT_REL_PATH "/update"
 #define UPDATE_MANIFEST_DEFAULT_NAME "update.fuf"
-#define UPDATE_MAINFEST_DEFAULT_PATH UPDATE_DIR_DEFAULT_REL_PATH "/" UPDATE_MANIFEST_DEFAULT_NAME
+#define UPDATE_MANIFEST_POINTER_FILE_NAME ".fupdate"
 
 typedef union {
     uint8_t raw[6];
@@ -28,6 +28,7 @@ typedef union {
 _Static_assert(sizeof(UpdateManifestRadioVersion) == 6, "UpdateManifestRadioVersion size error");
 
 typedef struct {
+    uint32_t manifest_version;
     string_t version;
     uint32_t target;
     string_t staged_loader_file;
@@ -59,4 +60,4 @@ bool update_manifest_has_obdata(UpdateManifest* update_manifest);
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/lib/update_util/update_operation.c b/lib/update_util/update_operation.c
index beea98d2..142dcaaa 100644
--- a/lib/update_util/update_operation.c
+++ b/lib/update_util/update_operation.c
@@ -9,10 +9,9 @@
 #include <lib/toolbox/path.h>
 #include <lib/toolbox/crc32_calc.h>
 
-static const char* UPDATE_ROOT_DIR = "/ext" UPDATE_DIR_DEFAULT_REL_PATH;
-static const char* UPDATE_PREFIX = "/ext" UPDATE_DIR_DEFAULT_REL_PATH "/";
-static const char* UPDATE_SUFFIX = "/" UPDATE_MANIFEST_DEFAULT_NAME;
-static const uint32_t MAX_DIR_NAME_LEN = 250;
+#define UPDATE_ROOT_DIR "/ext" UPDATE_DIR_DEFAULT_REL_PATH
+#define UPDATE_PREFIX "/ext" UPDATE_DIR_DEFAULT_REL_PATH "/"
+#define UPDATE_SUFFIX "/" UPDATE_MANIFEST_DEFAULT_NAME
 
 static const char* update_prepare_result_descr[] = {
     [UpdatePrepareResultOK] = "OK",
@@ -21,6 +20,8 @@ static const char* update_prepare_result_descr[] = {
     [UpdatePrepareResultManifestInvalid] = "Invalid manifest data",
     [UpdatePrepareResultStageMissing] = "Missing Stage2 loader",
     [UpdatePrepareResultStageIntegrityError] = "Corrupted Stage2 loader",
+    [UpdatePrepareResultManifestPointerError] = "Failed to create update pointer file",
+    [UpdatePrepareResultOutdatedManifestVersion] = "Update package is too old",
 };
 
 const char* update_operation_describe_preparation_result(const UpdatePrepareResult value) {
@@ -31,68 +32,10 @@ const char* update_operation_describe_preparation_result(const UpdatePrepareResu
     }
 }
 
-bool update_operation_get_package_dir_name(const char* full_path, string_t out_manifest_dir) {
-    bool path_ok = false;
-    string_t full_path_str;
-    string_init_set(full_path_str, full_path);
-    string_reset(out_manifest_dir);
-    bool start_end_ok = string_start_with_str_p(full_path_str, UPDATE_PREFIX) &&
-                        string_end_with_str_p(full_path_str, UPDATE_SUFFIX);
-    int16_t dir_name_len =
-        strlen(full_path) - strlen(UPDATE_PREFIX) - strlen(UPDATE_MANIFEST_DEFAULT_NAME) - 1;
-    if(dir_name_len == -1) {
-        path_ok = true;
-    } else if(start_end_ok && (dir_name_len > 0)) {
-        string_set_n(out_manifest_dir, full_path_str, strlen(UPDATE_PREFIX), dir_name_len);
-        path_ok = true;
-        if(string_search_char(out_manifest_dir, '/') != STRING_FAILURE) {
-            string_reset(out_manifest_dir);
-            path_ok = false;
-        }
-    }
-    string_clear(full_path_str);
-    return path_ok;
-}
-
-int32_t update_operation_get_package_index(Storage* storage, const char* update_package_dir) {
-    furi_assert(storage);
-    furi_assert(update_package_dir);
-
-    if(strlen(update_package_dir) == 0) {
-        return 0;
-    }
-
-    bool found = false;
-    int32_t index = 0;
-    File* dir = storage_file_alloc(storage);
-    FileInfo fi = {0};
-    char* name_buffer = malloc(MAX_DIR_NAME_LEN);
-    do {
-        if(!storage_dir_open(dir, UPDATE_ROOT_DIR)) {
-            break;
-        }
-
-        while(storage_dir_read(dir, &fi, name_buffer, MAX_DIR_NAME_LEN)) {
-            index++;
-            if(strcmp(name_buffer, update_package_dir)) {
-                continue;
-            } else {
-                found = true;
-                break;
-            }
-        }
-    } while(false);
-
-    free(name_buffer);
-    storage_file_free(dir);
-
-    return found ? index : -1;
-}
-
-bool update_operation_get_current_package_path(Storage* storage, string_t out_path) {
-    uint32_t update_index = furi_hal_rtc_get_register(FuriHalRtcRegisterUpdateFolderFSIndex);
+static bool update_operation_get_current_package_path_rtc(Storage* storage, string_t out_path) {
+    const uint32_t update_index = furi_hal_rtc_get_register(FuriHalRtcRegisterUpdateFolderFSIndex);
     string_set_str(out_path, UPDATE_ROOT_DIR);
-    if(update_index == 0) {
+    if(update_index == UPDATE_OPERATION_ROOT_DIR_PACKAGE_MAGIC) {
         return true;
     }
 
@@ -100,13 +43,13 @@ bool update_operation_get_current_package_path(Storage* storage, string_t out_pa
     uint32_t iter_index = 0;
     File* dir = storage_file_alloc(storage);
     FileInfo fi = {0};
-    char* name_buffer = malloc(MAX_DIR_NAME_LEN);
+    char* name_buffer = malloc(UPDATE_OPERATION_MAX_MANIFEST_PATH_LEN);
     do {
         if(!storage_dir_open(dir, UPDATE_ROOT_DIR)) {
             break;
         }
 
-        while(storage_dir_read(dir, &fi, name_buffer, MAX_DIR_NAME_LEN)) {
+        while(storage_dir_read(dir, &fi, name_buffer, UPDATE_OPERATION_MAX_MANIFEST_PATH_LEN)) {
             if(++iter_index == update_index) {
                 found = true;
                 path_append(out_path, name_buffer);
@@ -124,74 +67,148 @@ bool update_operation_get_current_package_path(Storage* storage, string_t out_pa
     return found;
 }
 
+#define UPDATE_FILE_POINTER_FN "/ext/" UPDATE_MANIFEST_POINTER_FILE_NAME
+#define UPDATE_MANIFEST_MAX_PATH_LEN 256u
+
+bool update_operation_get_current_package_manifest_path(Storage* storage, string_t out_path) {
+    string_reset(out_path);
+    if(storage_common_stat(storage, UPDATE_FILE_POINTER_FN, NULL) == FSE_OK) {
+        char* manifest_name_buffer = malloc(UPDATE_MANIFEST_MAX_PATH_LEN);
+        File* upd_file = NULL;
+        do {
+            upd_file = storage_file_alloc(storage);
+            if(!storage_file_open(
+                   upd_file, UPDATE_FILE_POINTER_FN, FSAM_READ, FSOM_OPEN_EXISTING)) {
+                break;
+            }
+            uint16_t bytes_read =
+                storage_file_read(upd_file, manifest_name_buffer, UPDATE_MANIFEST_MAX_PATH_LEN);
+            if((bytes_read == 0) || (bytes_read == UPDATE_MANIFEST_MAX_PATH_LEN)) {
+                break;
+            }
+            if(storage_common_stat(storage, manifest_name_buffer, NULL) != FSE_OK) {
+                break;
+            }
+            string_set_str(out_path, manifest_name_buffer);
+        } while(0);
+        free(manifest_name_buffer);
+        storage_file_free(upd_file);
+    } else {
+        /* legacy, will be deprecated */
+        string_t rtcpath;
+        string_init(rtcpath);
+        do {
+            if(!update_operation_get_current_package_path_rtc(storage, rtcpath)) {
+                break;
+            }
+            path_concat(string_get_cstr(rtcpath), UPDATE_MANIFEST_DEFAULT_NAME, out_path);
+        } while(0);
+        string_clear(rtcpath);
+    }
+    return !string_empty_p(out_path);
+}
+
+static bool update_operation_persist_manifest_path(Storage* storage, const char* manifest_path) {
+    const uint16_t manifest_path_len = strlen(manifest_path);
+    furi_check(manifest_path && manifest_path_len);
+    bool success = false;
+    File* file = storage_file_alloc(storage);
+    do {
+        if(manifest_path_len >= UPDATE_OPERATION_MAX_MANIFEST_PATH_LEN) {
+            break;
+        }
+
+        if(!storage_file_open(file, UPDATE_FILE_POINTER_FN, FSAM_WRITE, FSOM_CREATE_ALWAYS)) {
+            break;
+        }
+
+        if(storage_file_write(file, manifest_path, manifest_path_len) != manifest_path_len) {
+            break;
+        }
+
+        success = true;
+    } while(0);
+    storage_file_free(file);
+    return success;
+}
+
 UpdatePrepareResult update_operation_prepare(const char* manifest_file_path) {
-    string_t update_folder;
-    string_init(update_folder);
-    if(!update_operation_get_package_dir_name(manifest_file_path, update_folder)) {
-        string_clear(update_folder);
-        return UpdatePrepareResultManifestPathInvalid;
-    }
-
+    UpdatePrepareResult result = UpdatePrepareResultManifestFolderNotFound;
     Storage* storage = furi_record_open("storage");
-    int32_t update_index =
-        update_operation_get_package_index(storage, string_get_cstr(update_folder));
-    string_clear(update_folder);
-
-    if(update_index < 0) {
-        furi_record_close("storage");
-        return UpdatePrepareResultManifestFolderNotFound;
-    }
-
-    string_t update_dir_path;
-    string_init(update_dir_path);
-    path_extract_dirname(manifest_file_path, update_dir_path);
-
-    UpdatePrepareResult result = UpdatePrepareResultManifestInvalid;
     UpdateManifest* manifest = update_manifest_alloc();
-    if(update_manifest_init(manifest, manifest_file_path)) {
-        result = UpdatePrepareResultStageMissing;
-        File* file = storage_file_alloc(storage);
+    File* file = storage_file_alloc(storage);
+
+    string_t stage_path;
+    string_init(stage_path);
+    do {
+        if(storage_common_stat(storage, manifest_file_path, NULL) != FSE_OK) {
+            break;
+        }
+
+        if(!update_manifest_init(manifest, manifest_file_path)) {
+            result = UpdatePrepareResultManifestInvalid;
+            break;
+        }
+
+        if(manifest->manifest_version < UPDATE_OPERATION_MIN_MANIFEST_VERSION) {
+            result = UpdatePrepareResultOutdatedManifestVersion;
+            break;
+        }
+
+        if(furi_hal_version_get_hw_target() != manifest->target) {
+            result = UpdatePrepareResultTargetMismatch;
+            break;
+        }
 
-        string_t stage_path;
-        string_init(stage_path);
         path_extract_dirname(manifest_file_path, stage_path);
         path_append(stage_path, string_get_cstr(manifest->staged_loader_file));
 
-        uint32_t crc = 0;
-        do {
-            if(!storage_file_open(
-                   file, string_get_cstr(stage_path), FSAM_READ, FSOM_OPEN_EXISTING)) {
-                break;
-            }
-
-            result = UpdatePrepareResultStageIntegrityError;
-            crc = crc32_calc_file(file, NULL, NULL);
-        } while(false);
-
-        string_clear(stage_path);
-        storage_file_free(file);
-
-        if(crc == manifest->staged_loader_crc) {
-            furi_hal_rtc_set_boot_mode(FuriHalRtcBootModePreUpdate);
-            update_operation_persist_package_index(update_index);
-            result = UpdatePrepareResultOK;
+        if(!storage_file_open(file, string_get_cstr(stage_path), FSAM_READ, FSOM_OPEN_EXISTING)) {
+            result = UpdatePrepareResultStageMissing;
+            break;
         }
-    }
-    furi_record_close("storage");
+
+        uint32_t crc = crc32_calc_file(file, NULL, NULL);
+        if(crc != manifest->staged_loader_crc) {
+            result = UpdatePrepareResultStageIntegrityError;
+            break;
+        }
+
+        if(!update_operation_persist_manifest_path(storage, manifest_file_path)) {
+            result = UpdatePrepareResultManifestPointerError;
+            break;
+        }
+
+        result = UpdatePrepareResultOK;
+        furi_hal_rtc_set_boot_mode(FuriHalRtcBootModePreUpdate);
+    } while(false);
+
+    string_clear(stage_path);
+    storage_file_free(file);
+
     update_manifest_free(manifest);
+    furi_record_close("storage");
 
     return result;
 }
 
 bool update_operation_is_armed() {
-    return furi_hal_rtc_get_boot_mode() == FuriHalRtcBootModePreUpdate;
+    FuriHalRtcBootMode boot_mode = furi_hal_rtc_get_boot_mode();
+    const uint32_t rtc_upd_index =
+        furi_hal_rtc_get_register(FuriHalRtcRegisterUpdateFolderFSIndex);
+    Storage* storage = furi_record_open("storage");
+    const bool upd_fn_ptr_exists =
+        (storage_common_stat(storage, UPDATE_FILE_POINTER_FN, NULL) == FSE_OK);
+    furi_record_close("storage");
+    return (boot_mode >= FuriHalRtcBootModePreUpdate) &&
+           (boot_mode <= FuriHalRtcBootModePostUpdate) &&
+           ((rtc_upd_index != INT_MAX) || upd_fn_ptr_exists);
 }
 
 void update_operation_disarm() {
     furi_hal_rtc_set_boot_mode(FuriHalRtcBootModeNormal);
-    furi_hal_rtc_set_register(FuriHalRtcRegisterUpdateFolderFSIndex, 0);
-}
-
-void update_operation_persist_package_index(uint32_t index) {
-    furi_hal_rtc_set_register(FuriHalRtcRegisterUpdateFolderFSIndex, index);
+    furi_hal_rtc_set_register(FuriHalRtcRegisterUpdateFolderFSIndex, INT_MAX);
+    Storage* storage = furi_record_open("storage");
+    storage_simply_remove(storage, UPDATE_FILE_POINTER_FN);
+    furi_record_close("storage");
 }
\ No newline at end of file
diff --git a/lib/update_util/update_operation.h b/lib/update_util/update_operation.h
index 6b6ab730..39d58028 100644
--- a/lib/update_util/update_operation.h
+++ b/lib/update_util/update_operation.h
@@ -8,6 +8,10 @@
 extern "C" {
 #endif
 
+#define UPDATE_OPERATION_ROOT_DIR_PACKAGE_MAGIC 0
+#define UPDATE_OPERATION_MAX_MANIFEST_PATH_LEN 255u
+#define UPDATE_OPERATION_MIN_MANIFEST_VERSION 2
+
 /* 
  * Checks if supplied full manifest path is valid
  * @param full_path Full path to manifest file. Must be named UPDATE_MANIFEST_DEFAULT_NAME
@@ -17,6 +21,7 @@ extern "C" {
  */
 bool update_operation_get_package_dir_name(const char* full_path, string_t out_manifest_dir);
 
+/* When updating this enum, also update assets/protobuf/system.proto */
 typedef enum {
     UpdatePrepareResultOK,
     UpdatePrepareResultManifestPathInvalid,
@@ -24,6 +29,9 @@ typedef enum {
     UpdatePrepareResultManifestInvalid,
     UpdatePrepareResultStageMissing,
     UpdatePrepareResultStageIntegrityError,
+    UpdatePrepareResultManifestPointerError,
+    UpdatePrepareResultTargetMismatch,
+    UpdatePrepareResultOutdatedManifestVersion,
 } UpdatePrepareResult;
 
 const char* update_operation_describe_preparation_result(const UpdatePrepareResult value);
@@ -35,30 +43,16 @@ const char* update_operation_describe_preparation_result(const UpdatePrepareResu
  */
 UpdatePrepareResult update_operation_prepare(const char* manifest_file_path);
 
-/* 
- * Gets update package index to pass in RTC registers
- * @param storage Storage API
- * @param update_package_dir Package directory name
- * @return int32_t <0 - error, >= 0 - update index value
- */
-int32_t update_operation_get_package_index(Storage* storage, const char* update_package_dir);
-
 /* 
  * Gets filesystem path for current update package
  * @param storage Storage API
- * @param out_path Path to directory with manifest & related files. Must be initialized
+ * @param out_path Path to manifest. Must be initialized
  * @return true if path was restored successfully
  */
-bool update_operation_get_current_package_path(Storage* storage, string_t out_path);
+bool update_operation_get_current_package_manifest_path(Storage* storage, string_t out_path);
 
 /* 
- * Stores given update index in RTC registers
- * @param index Value to store
- */
-void update_operation_persist_package_index(uint32_t index);
-
-/* 
- * Sets up update operation to be performed on reset
+ * Checks if an update operation step is pending after reset
  */
 bool update_operation_is_armed();
 
@@ -69,4 +63,4 @@ void update_operation_disarm();
 
 #ifdef __cplusplus
 }
-#endif
\ No newline at end of file
+#endif
diff --git a/make/base.mk b/make/base.mk
index 696c4294..281419e9 100644
--- a/make/base.mk
+++ b/make/base.mk
@@ -8,4 +8,4 @@ OPENOCD_OPTS	=
 CFLAGS			= 
 CPPFLAGS		= 
 LDFLAGS			= 
-SVD_FILE		= 
\ No newline at end of file
+SVD_FILE		= 
diff --git a/make/defaults.mk b/make/defaults.mk
index 86e4f03d..ade34a6b 100644
--- a/make/defaults.mk
+++ b/make/defaults.mk
@@ -1,2 +1,2 @@
 TARGET	?= f7
-export TARGET
\ No newline at end of file
+export TARGET
diff --git a/make/freertos-heap.mk b/make/freertos-heap.mk
index e839e61c..93992900 100644
--- a/make/freertos-heap.mk
+++ b/make/freertos-heap.mk
@@ -1 +1 @@
-LDFLAGS		+= -Wl,--wrap,_malloc_r -Wl,--wrap,_free_r -Wl,--wrap,_calloc_r -Wl,--wrap,_realloc_r
\ No newline at end of file
+LDFLAGS		+= -Wl,--wrap,_malloc_r -Wl,--wrap,_free_r -Wl,--wrap,_calloc_r -Wl,--wrap,_realloc_r
diff --git a/scripts/ReadMe.md b/scripts/ReadMe.md
index b04ed0d1..86b5b8af 100644
--- a/scripts/ReadMe.md
+++ b/scripts/ReadMe.md
@@ -57,4 +57,4 @@ Run in the root folder of the repo:
 
 ```bash
 python scripts/storage.py -p <flipper_cli_port> send assets/resources /ext
-```
\ No newline at end of file
+```
diff --git a/scripts/update.py b/scripts/update.py
index 3e8daab0..4769565c 100755
--- a/scripts/update.py
+++ b/scripts/update.py
@@ -13,6 +13,7 @@ import math
 
 
 class Main(App):
+    UPDATE_MANIFEST_VERSION = 2
     UPDATE_MANIFEST_NAME = "update.fuf"
 
     #  No compression, plain tar
@@ -93,7 +94,9 @@ class Main(App):
             )
 
         file = FlipperFormatFile()
-        file.setHeader("Flipper firmware upgrade configuration", 1)
+        file.setHeader(
+            "Flipper firmware upgrade configuration", self.UPDATE_MANIFEST_VERSION
+        )
         file.writeKey("Info", self.args.version)
         file.writeKey("Target", self.args.target[1:])  # dirty 'f' strip
         file.writeKey("Loader", stage_basename)
@@ -102,7 +105,7 @@ class Main(App):
         file.writeKey("Firmware", dfu_basename)
         file.writeKey("Radio", radiobin_basename or "")
         file.writeKey("Radio address", self.int2ffhex(radio_addr))
-        file.writeKey("Radio version", self.int2ffhex(radio_version))
+        file.writeKey("Radio version", self.int2ffhex(radio_version, 12))
         if radiobin_basename:
             file.writeKey("Radio CRC", self.int2ffhex(self.crc(self.args.radiobin)))
         else:
@@ -149,11 +152,10 @@ class Main(App):
         return " ".join(f"{b:02X}" for b in value)
 
     @staticmethod
-    def int2ffhex(value: int):
-        n_hex_bytes = 4
+    def int2ffhex(value: int, n_hex_syms=8):
         if value:
-            n_hex_bytes = math.ceil(math.ceil(math.log2(value)) / 8) * 2
-        fmtstr = f"%0{n_hex_bytes}X"
+            n_hex_syms = math.ceil(math.ceil(math.log2(value)) / 8) * 2
+        fmtstr = f"%0{n_hex_syms}X"
         hexstr = fmtstr % value
         return " ".join(list(Main.batch(hexstr, 2))[::-1])