diff --git a/applications/debug/unit_tests/nfc/nfc_test.c b/applications/debug/unit_tests/nfc/nfc_test.c
index 54bdd590..bc2f7887 100644
--- a/applications/debug/unit_tests/nfc/nfc_test.c
+++ b/applications/debug/unit_tests/nfc/nfc_test.c
@@ -27,6 +27,12 @@ static const uint32_t nfc_test_file_version = 1;
 #define NFC_TEST_DATA_MAX_LEN 18
 #define NFC_TETS_TIMINGS_MAX_LEN 1350
 
+// Maximum allowed time for buffer preparation to fit 500us nt message timeout
+#define NFC_TEST_4_BYTE_BUILD_BUFFER_TIM_MAX (150)
+#define NFC_TEST_16_BYTE_BUILD_BUFFER_TIM_MAX (640)
+#define NFC_TEST_4_BYTE_BUILD_SIGNAL_TIM_MAX (110)
+#define NFC_TEST_16_BYTE_BUILD_SIGNAL_TIM_MAX (440)
+
 typedef struct {
     Storage* storage;
     NfcaSignal* signal;
@@ -89,13 +95,13 @@ static bool nfc_test_read_signal_from_file(const char* file_name) {
 
 static bool nfc_test_digital_signal_test_encode(
     const char* file_name,
-    uint32_t encode_max_time,
+    uint32_t build_signal_max_time_us,
+    uint32_t build_buffer_max_time_us,
     uint32_t timing_tolerance,
     uint32_t timings_sum_tolerance) {
     furi_assert(nfc_test);
 
     bool success = false;
-    uint32_t time = 0;
     uint32_t dut_timings_sum = 0;
     uint32_t ref_timings_sum = 0;
     uint8_t parity[10] = {};
@@ -109,17 +115,37 @@ static bool nfc_test_digital_signal_test_encode(
 
         // Encode signal
         FURI_CRITICAL_ENTER();
-        time = DWT->CYCCNT;
+        uint32_t time_start = DWT->CYCCNT;
+
         nfca_signal_encode(
             nfc_test->signal, nfc_test->test_data, nfc_test->test_data_len * 8, parity);
+
+        uint32_t time_signal =
+            (DWT->CYCCNT - time_start) / furi_hal_cortex_instructions_per_microsecond();
+
+        time_start = DWT->CYCCNT;
+
         digital_signal_prepare_arr(nfc_test->signal->tx_signal);
-        time = (DWT->CYCCNT - time) / furi_hal_cortex_instructions_per_microsecond();
+
+        uint32_t time_buffer =
+            (DWT->CYCCNT - time_start) / furi_hal_cortex_instructions_per_microsecond();
         FURI_CRITICAL_EXIT();
 
         // Check timings
-        if(time > encode_max_time) {
+        if(time_signal > build_signal_max_time_us) {
             FURI_LOG_E(
-                TAG, "Encoding time: %ld us while accepted value: %ld us", time, encode_max_time);
+                TAG,
+                "Build signal time: %ld us while accepted value: %ld us",
+                time_signal,
+                build_signal_max_time_us);
+            break;
+        }
+        if(time_buffer > build_buffer_max_time_us) {
+            FURI_LOG_E(
+                TAG,
+                "Build buffer time: %ld us while accepted value: %ld us",
+                time_buffer,
+                build_buffer_max_time_us);
             break;
         }
 
@@ -156,7 +182,16 @@ static bool nfc_test_digital_signal_test_encode(
             break;
         }
 
-        FURI_LOG_I(TAG, "Encoding time: %ld us. Acceptable time: %ld us", time, encode_max_time);
+        FURI_LOG_I(
+            TAG,
+            "Build signal time: %ld us. Acceptable time: %ld us",
+            time_signal,
+            build_signal_max_time_us);
+        FURI_LOG_I(
+            TAG,
+            "Build buffer time: %ld us. Acceptable time: %ld us",
+            time_buffer,
+            build_buffer_max_time_us);
         FURI_LOG_I(
             TAG,
             "Timings sum difference: %ld [1/64MHZ]. Acceptable difference: %ld [1/64MHz]",
@@ -171,11 +206,19 @@ static bool nfc_test_digital_signal_test_encode(
 MU_TEST(nfc_digital_signal_test) {
     mu_assert(
         nfc_test_digital_signal_test_encode(
-            NFC_TEST_RESOURCES_DIR NFC_TEST_SIGNAL_SHORT_FILE, 500, 1, 37),
+            NFC_TEST_RESOURCES_DIR NFC_TEST_SIGNAL_SHORT_FILE,
+            NFC_TEST_4_BYTE_BUILD_SIGNAL_TIM_MAX,
+            NFC_TEST_4_BYTE_BUILD_BUFFER_TIM_MAX,
+            1,
+            37),
         "NFC short digital signal test failed\r\n");
     mu_assert(
         nfc_test_digital_signal_test_encode(
-            NFC_TEST_RESOURCES_DIR NFC_TEST_SIGNAL_LONG_FILE, 2000, 1, 37),
+            NFC_TEST_RESOURCES_DIR NFC_TEST_SIGNAL_LONG_FILE,
+            NFC_TEST_16_BYTE_BUILD_SIGNAL_TIM_MAX,
+            NFC_TEST_16_BYTE_BUILD_BUFFER_TIM_MAX,
+            1,
+            37),
         "NFC long digital signal test failed\r\n");
 }
 
diff --git a/applications/external/nfc_magic/lib/magic/classic_gen1.c b/applications/external/nfc_magic/lib/magic/classic_gen1.c
index ebd2b080..8d87d631 100644
--- a/applications/external/nfc_magic/lib/magic/classic_gen1.c
+++ b/applications/external/nfc_magic/lib/magic/classic_gen1.c
@@ -5,7 +5,6 @@
 #define TAG "Magic"
 
 #define MAGIC_CMD_WUPA (0x40)
-#define MAGIC_CMD_WIPE (0x41)
 #define MAGIC_CMD_ACCESS (0x43)
 
 #define MAGIC_MIFARE_READ_CMD (0x30)
@@ -144,32 +143,3 @@ bool magic_gen1_write_blk(uint8_t block_num, MfClassicBlock* data) {
 
     return write_success;
 }
-
-bool magic_gen1_wipe() {
-    bool wipe_success = false;
-    uint8_t tx_data[MAGIC_BUFFER_SIZE] = {};
-    uint8_t rx_data[MAGIC_BUFFER_SIZE] = {};
-    uint16_t rx_len = 0;
-    FuriHalNfcReturn ret = 0;
-
-    do {
-        tx_data[0] = MAGIC_CMD_WIPE;
-        ret = furi_hal_nfc_ll_txrx_bits(
-            tx_data,
-            8,
-            rx_data,
-            sizeof(rx_data),
-            &rx_len,
-            FURI_HAL_NFC_LL_TXRX_FLAGS_CRC_TX_MANUAL | FURI_HAL_NFC_LL_TXRX_FLAGS_AGC_ON |
-                FURI_HAL_NFC_LL_TXRX_FLAGS_CRC_RX_KEEP,
-            furi_hal_nfc_ll_ms2fc(2000));
-
-        if(ret != FuriHalNfcReturnIncompleteByte) break;
-        if(rx_len != 4) break;
-        if(rx_data[0] != MAGIC_ACK) break;
-
-        wipe_success = true;
-    } while(false);
-
-    return wipe_success;
-}
\ No newline at end of file
diff --git a/applications/external/nfc_magic/lib/magic/classic_gen1.h b/applications/external/nfc_magic/lib/magic/classic_gen1.h
index 6d4ff6dc..98de1230 100644
--- a/applications/external/nfc_magic/lib/magic/classic_gen1.h
+++ b/applications/external/nfc_magic/lib/magic/classic_gen1.h
@@ -9,5 +9,3 @@ bool magic_gen1_read_block(uint8_t block_num, MfClassicBlock* data);
 bool magic_gen1_data_access_cmd();
 
 bool magic_gen1_write_blk(uint8_t block_num, MfClassicBlock* data);
-
-bool magic_gen1_wipe();
\ No newline at end of file
diff --git a/applications/external/nfc_magic/lib/magic/magic.c b/applications/external/nfc_magic/lib/magic/magic.c
deleted file mode 100644
index ebd2b080..00000000
--- a/applications/external/nfc_magic/lib/magic/magic.c
+++ /dev/null
@@ -1,175 +0,0 @@
-#include "classic_gen1.h"
-
-#include <furi_hal_nfc.h>
-
-#define TAG "Magic"
-
-#define MAGIC_CMD_WUPA (0x40)
-#define MAGIC_CMD_WIPE (0x41)
-#define MAGIC_CMD_ACCESS (0x43)
-
-#define MAGIC_MIFARE_READ_CMD (0x30)
-#define MAGIC_MIFARE_WRITE_CMD (0xA0)
-
-#define MAGIC_ACK (0x0A)
-
-#define MAGIC_BUFFER_SIZE (32)
-
-bool magic_gen1_wupa() {
-    bool magic_activated = false;
-    uint8_t tx_data[MAGIC_BUFFER_SIZE] = {};
-    uint8_t rx_data[MAGIC_BUFFER_SIZE] = {};
-    uint16_t rx_len = 0;
-    FuriHalNfcReturn ret = 0;
-
-    do {
-        // Start communication
-        tx_data[0] = MAGIC_CMD_WUPA;
-        ret = furi_hal_nfc_ll_txrx_bits(
-            tx_data,
-            7,
-            rx_data,
-            sizeof(rx_data),
-            &rx_len,
-            FURI_HAL_NFC_LL_TXRX_FLAGS_CRC_TX_MANUAL | FURI_HAL_NFC_LL_TXRX_FLAGS_AGC_ON |
-                FURI_HAL_NFC_LL_TXRX_FLAGS_CRC_RX_KEEP,
-            furi_hal_nfc_ll_ms2fc(20));
-        if(ret != FuriHalNfcReturnIncompleteByte) break;
-        if(rx_len != 4) break;
-        if(rx_data[0] != MAGIC_ACK) break;
-        magic_activated = true;
-    } while(false);
-
-    return magic_activated;
-}
-
-bool magic_gen1_data_access_cmd() {
-    bool write_cmd_success = false;
-    uint8_t tx_data[MAGIC_BUFFER_SIZE] = {};
-    uint8_t rx_data[MAGIC_BUFFER_SIZE] = {};
-    uint16_t rx_len = 0;
-    FuriHalNfcReturn ret = 0;
-
-    do {
-        tx_data[0] = MAGIC_CMD_ACCESS;
-        ret = furi_hal_nfc_ll_txrx_bits(
-            tx_data,
-            8,
-            rx_data,
-            sizeof(rx_data),
-            &rx_len,
-            FURI_HAL_NFC_LL_TXRX_FLAGS_CRC_TX_MANUAL | FURI_HAL_NFC_LL_TXRX_FLAGS_AGC_ON |
-                FURI_HAL_NFC_LL_TXRX_FLAGS_CRC_RX_KEEP,
-            furi_hal_nfc_ll_ms2fc(20));
-        if(ret != FuriHalNfcReturnIncompleteByte) break;
-        if(rx_len != 4) break;
-        if(rx_data[0] != MAGIC_ACK) break;
-
-        write_cmd_success = true;
-    } while(false);
-
-    return write_cmd_success;
-}
-
-bool magic_gen1_read_block(uint8_t block_num, MfClassicBlock* data) {
-    furi_assert(data);
-
-    bool read_success = false;
-
-    uint8_t tx_data[MAGIC_BUFFER_SIZE] = {};
-    uint8_t rx_data[MAGIC_BUFFER_SIZE] = {};
-    uint16_t rx_len = 0;
-    FuriHalNfcReturn ret = 0;
-
-    do {
-        tx_data[0] = MAGIC_MIFARE_READ_CMD;
-        tx_data[1] = block_num;
-        ret = furi_hal_nfc_ll_txrx_bits(
-            tx_data,
-            2 * 8,
-            rx_data,
-            sizeof(rx_data),
-            &rx_len,
-            FURI_HAL_NFC_LL_TXRX_FLAGS_AGC_ON,
-            furi_hal_nfc_ll_ms2fc(20));
-
-        if(ret != FuriHalNfcReturnOk) break;
-        if(rx_len != 16 * 8) break;
-        memcpy(data->value, rx_data, sizeof(data->value));
-        read_success = true;
-    } while(false);
-
-    return read_success;
-}
-
-bool magic_gen1_write_blk(uint8_t block_num, MfClassicBlock* data) {
-    furi_assert(data);
-
-    bool write_success = false;
-    uint8_t tx_data[MAGIC_BUFFER_SIZE] = {};
-    uint8_t rx_data[MAGIC_BUFFER_SIZE] = {};
-    uint16_t rx_len = 0;
-    FuriHalNfcReturn ret = 0;
-
-    do {
-        tx_data[0] = MAGIC_MIFARE_WRITE_CMD;
-        tx_data[1] = block_num;
-        ret = furi_hal_nfc_ll_txrx_bits(
-            tx_data,
-            2 * 8,
-            rx_data,
-            sizeof(rx_data),
-            &rx_len,
-            FURI_HAL_NFC_LL_TXRX_FLAGS_AGC_ON | FURI_HAL_NFC_LL_TXRX_FLAGS_CRC_RX_KEEP,
-            furi_hal_nfc_ll_ms2fc(20));
-        if(ret != FuriHalNfcReturnIncompleteByte) break;
-        if(rx_len != 4) break;
-        if(rx_data[0] != MAGIC_ACK) break;
-
-        memcpy(tx_data, data->value, sizeof(data->value));
-        ret = furi_hal_nfc_ll_txrx_bits(
-            tx_data,
-            16 * 8,
-            rx_data,
-            sizeof(rx_data),
-            &rx_len,
-            FURI_HAL_NFC_LL_TXRX_FLAGS_AGC_ON | FURI_HAL_NFC_LL_TXRX_FLAGS_CRC_RX_KEEP,
-            furi_hal_nfc_ll_ms2fc(20));
-        if(ret != FuriHalNfcReturnIncompleteByte) break;
-        if(rx_len != 4) break;
-        if(rx_data[0] != MAGIC_ACK) break;
-
-        write_success = true;
-    } while(false);
-
-    return write_success;
-}
-
-bool magic_gen1_wipe() {
-    bool wipe_success = false;
-    uint8_t tx_data[MAGIC_BUFFER_SIZE] = {};
-    uint8_t rx_data[MAGIC_BUFFER_SIZE] = {};
-    uint16_t rx_len = 0;
-    FuriHalNfcReturn ret = 0;
-
-    do {
-        tx_data[0] = MAGIC_CMD_WIPE;
-        ret = furi_hal_nfc_ll_txrx_bits(
-            tx_data,
-            8,
-            rx_data,
-            sizeof(rx_data),
-            &rx_len,
-            FURI_HAL_NFC_LL_TXRX_FLAGS_CRC_TX_MANUAL | FURI_HAL_NFC_LL_TXRX_FLAGS_AGC_ON |
-                FURI_HAL_NFC_LL_TXRX_FLAGS_CRC_RX_KEEP,
-            furi_hal_nfc_ll_ms2fc(2000));
-
-        if(ret != FuriHalNfcReturnIncompleteByte) break;
-        if(rx_len != 4) break;
-        if(rx_data[0] != MAGIC_ACK) break;
-
-        wipe_success = true;
-    } while(false);
-
-    return wipe_success;
-}
\ No newline at end of file
diff --git a/applications/external/nfc_magic/nfc_magic_worker.c b/applications/external/nfc_magic/nfc_magic_worker.c
index dc22b5d3..9ee7fd3e 100644
--- a/applications/external/nfc_magic/nfc_magic_worker.c
+++ b/applications/external/nfc_magic/nfc_magic_worker.c
@@ -92,51 +92,49 @@ void nfc_magic_worker_write(NfcMagicWorker* nfc_magic_worker) {
 
     while(nfc_magic_worker->state == NfcMagicWorkerStateWrite) {
         do {
-            if(furi_hal_nfc_detect(&nfc_data, 200)) {
-                if(nfc_data.cuid != magic_dev->cuid) break;
-                if(!card_found_notified) {
-                    nfc_magic_worker->callback(
-                        NfcMagicWorkerEventCardDetected, nfc_magic_worker->context);
-                    card_found_notified = true;
-                }
-                furi_hal_nfc_sleep();
-
-                magic_activate();
-                if(magic_dev->type == MagicTypeClassicGen1) {
-                    if(dev_protocol != NfcDeviceProtocolMifareClassic) break;
-                    MfClassicData* mfc_data = &dev_data->mf_classic_data;
-
-                    if(mfc_data->type != MfClassicType1k) break;
+            if(magic_dev->type == MagicTypeClassicGen1) {
+                if(furi_hal_nfc_detect(&nfc_data, 200)) {
+                    magic_deactivate();
+                    magic_activate();
                     if(!magic_gen1_wupa()) {
-                        FURI_LOG_E(TAG, "Not Magic card");
+                        FURI_LOG_E(TAG, "No card response to WUPA (not a magic card)");
                         nfc_magic_worker->callback(
                             NfcMagicWorkerEventWrongCard, nfc_magic_worker->context);
                         done = true;
                         break;
                     }
+                    magic_deactivate();
+                }
+                magic_activate();
+                if(magic_gen1_wupa()) {
                     if(!magic_gen1_data_access_cmd()) {
-                        FURI_LOG_E(TAG, "Not Magic card");
+                        FURI_LOG_E(
+                            TAG, "No card response to data access command (not a magic card)");
                         nfc_magic_worker->callback(
                             NfcMagicWorkerEventWrongCard, nfc_magic_worker->context);
                         done = true;
                         break;
                     }
+
+                    MfClassicData* mfc_data = &dev_data->mf_classic_data;
                     for(size_t i = 0; i < 64; i++) {
                         FURI_LOG_D(TAG, "Writing block %d", i);
                         if(!magic_gen1_write_blk(i, &mfc_data->block[i])) {
                             FURI_LOG_E(TAG, "Failed to write %d block", i);
+                            done = true;
                             nfc_magic_worker->callback(
                                 NfcMagicWorkerEventFail, nfc_magic_worker->context);
-                            done = true;
                             break;
                         }
                     }
 
+                    done = true;
                     nfc_magic_worker->callback(
                         NfcMagicWorkerEventSuccess, nfc_magic_worker->context);
-                    done = true;
                     break;
-                } else if(magic_dev->type == MagicTypeGen4) {
+                }
+            } else if(magic_dev->type == MagicTypeGen4) {
+                if(furi_hal_nfc_detect(&nfc_data, 200)) {
                     uint8_t gen4_config[28];
                     uint32_t password = magic_dev->password;
 
@@ -196,6 +194,7 @@ void nfc_magic_worker_write(NfcMagicWorker* nfc_magic_worker) {
                     gen4_config[25] = dev_data->nfc_data.atqa[1];
                     gen4_config[26] = dev_data->nfc_data.sak;
 
+                    furi_hal_nfc_sleep();
                     furi_hal_nfc_activate_nfca(200, &cuid);
                     if(!magic_gen4_set_cfg(password, gen4_config, sizeof(gen4_config), false)) {
                         nfc_magic_worker->callback(
@@ -394,6 +393,11 @@ void nfc_magic_worker_wipe(NfcMagicWorker* nfc_magic_worker) {
 
     MfClassicBlock block;
     memset(&block, 0, sizeof(MfClassicBlock));
+    MfClassicBlock empty_block;
+    memset(&empty_block, 0, sizeof(MfClassicBlock));
+    MfClassicBlock trailer_block;
+    memset(&trailer_block, 0xff, sizeof(MfClassicBlock));
+
     block.value[0] = 0x01;
     block.value[1] = 0x02;
     block.value[2] = 0x03;
@@ -402,6 +406,10 @@ void nfc_magic_worker_wipe(NfcMagicWorker* nfc_magic_worker) {
     block.value[5] = 0x08;
     block.value[6] = 0x04;
 
+    trailer_block.value[7] = 0x07;
+    trailer_block.value[8] = 0x80;
+    trailer_block.value[9] = 0x69;
+
     while(nfc_magic_worker->state == NfcMagicWorkerStateWipe) {
         do {
             magic_deactivate();
@@ -415,10 +423,26 @@ void nfc_magic_worker_wipe(NfcMagicWorker* nfc_magic_worker) {
                     card_found_notified = true;
                 }
 
-                if(!magic_gen1_wipe()) break;
                 if(!magic_gen1_data_access_cmd()) break;
                 if(!magic_gen1_write_blk(0, &block)) break;
 
+                for(size_t i = 1; i < 64; i++) {
+                    FURI_LOG_D(TAG, "Wiping block %d", i);
+                    bool success = false;
+                    if((i | 0x03) == i) {
+                        success = magic_gen1_write_blk(i, &trailer_block);
+                    } else {
+                        success = magic_gen1_write_blk(i, &empty_block);
+                    }
+
+                    if(!success) {
+                        FURI_LOG_E(TAG, "Failed to write %d block", i);
+                        nfc_magic_worker->callback(
+                            NfcMagicWorkerEventFail, nfc_magic_worker->context);
+                        break;
+                    }
+                }
+
                 card_wiped = true;
                 nfc_magic_worker->callback(NfcMagicWorkerEventSuccess, nfc_magic_worker->context);
             } else if(magic_dev->type == MagicTypeGen4) {
diff --git a/applications/main/subghz/helpers/subghz_error_type.h b/applications/main/subghz/helpers/subghz_error_type.h
index e481aa4b..0f86d6ea 100644
--- a/applications/main/subghz/helpers/subghz_error_type.h
+++ b/applications/main/subghz/helpers/subghz_error_type.h
@@ -10,4 +10,5 @@ typedef enum {
         1, /** File parsing error, or wrong file structure, or missing required parameters. more accurate data can be obtained through the debug port */
     SubGhzErrorTypeOnlyRX =
         2, /** Transmission on this frequency is blocked by regional settings */
+    SubGhzErrorTypeParserOthers = 3, /** Error in protocol parameters description */
 } SubGhzErrorType;
diff --git a/applications/main/subghz/scenes/subghz_scene_rpc.c b/applications/main/subghz/scenes/subghz_scene_rpc.c
index aa6f132d..d4bf3e80 100644
--- a/applications/main/subghz/scenes/subghz_scene_rpc.c
+++ b/applications/main/subghz/scenes/subghz_scene_rpc.c
@@ -40,15 +40,26 @@ bool subghz_scene_rpc_on_event(void* context, SceneManagerEvent event) {
         } else if(event.event == SubGhzCustomEventSceneRpcButtonPress) {
             bool result = false;
             if((state == SubGhzRpcStateLoaded)) {
-                result = subghz_tx_start(subghz, subghz_txrx_get_fff_data(subghz->txrx));
-                state = SubGhzRpcStateTx;
-                if(result) subghz_blink_start(subghz);
-            }
-            if(!result) {
-                rpc_system_app_set_error_code(subghz->rpc_ctx, SubGhzErrorTypeOnlyRX);
-                rpc_system_app_set_error_text(
-                    subghz->rpc_ctx,
-                    "Transmission on this frequency is restricted in your region");
+                switch(
+                    subghz_txrx_tx_start(subghz->txrx, subghz_txrx_get_fff_data(subghz->txrx))) {
+                case SubGhzTxRxStartTxStateErrorOnlyRx:
+                    rpc_system_app_set_error_code(subghz->rpc_ctx, SubGhzErrorTypeOnlyRX);
+                    rpc_system_app_set_error_text(
+                        subghz->rpc_ctx,
+                        "Transmission on this frequency is restricted in your region");
+                    break;
+                case SubGhzTxRxStartTxStateErrorParserOthers:
+                    rpc_system_app_set_error_code(subghz->rpc_ctx, SubGhzErrorTypeParserOthers);
+                    rpc_system_app_set_error_text(
+                        subghz->rpc_ctx, "Error in protocol parameters description");
+                    break;
+
+                default: //if(SubGhzTxRxStartTxStateOk)
+                    result = true;
+                    subghz_blink_start(subghz);
+                    state = SubGhzRpcStateTx;
+                    break;
+                }
             }
             rpc_system_app_confirm(subghz->rpc_ctx, RpcAppEventButtonPress, result);
         } else if(event.event == SubGhzCustomEventSceneRpcButtonRelease) {
@@ -56,9 +67,9 @@ bool subghz_scene_rpc_on_event(void* context, SceneManagerEvent event) {
             if(state == SubGhzRpcStateTx) {
                 subghz_txrx_stop(subghz->txrx);
                 subghz_blink_stop(subghz);
-                state = SubGhzRpcStateIdle;
                 result = true;
             }
+            state = SubGhzRpcStateIdle;
             rpc_system_app_confirm(subghz->rpc_ctx, RpcAppEventButtonRelease, result);
         } else if(event.event == SubGhzCustomEventSceneRpcLoad) {
             bool result = false;
@@ -95,7 +106,7 @@ bool subghz_scene_rpc_on_event(void* context, SceneManagerEvent event) {
 void subghz_scene_rpc_on_exit(void* context) {
     SubGhz* subghz = context;
     SubGhzRpcState state = scene_manager_get_scene_state(subghz->scene_manager, SubGhzSceneRpc);
-    if(state != SubGhzRpcStateIdle) {
+    if(state == SubGhzRpcStateTx) {
         subghz_txrx_stop(subghz->txrx);
         subghz_blink_stop(subghz);
     }
diff --git a/applications/main/subghz/subghz_cli.c b/applications/main/subghz/subghz_cli.c
index ac19d65b..60845ac9 100644
--- a/applications/main/subghz/subghz_cli.c
+++ b/applications/main/subghz/subghz_cli.c
@@ -176,16 +176,19 @@ void subghz_cli_command_tx(Cli* cli, FuriString* args, void* context) {
 
     furi_hal_power_suppress_charge_enter();
 
-    furi_hal_subghz_start_async_tx(subghz_transmitter_yield, transmitter);
+    if(furi_hal_subghz_start_async_tx(subghz_transmitter_yield, transmitter)) {
+        while(!(furi_hal_subghz_is_async_tx_complete() || cli_cmd_interrupt_received(cli))) {
+            printf(".");
+            fflush(stdout);
+            furi_delay_ms(333);
+        }
+        furi_hal_subghz_stop_async_tx();
 
-    while(!(furi_hal_subghz_is_async_tx_complete() || cli_cmd_interrupt_received(cli))) {
-        printf(".");
-        fflush(stdout);
-        furi_delay_ms(333);
+    } else {
+        printf("Transmission on this frequency is restricted in your region\r\n");
     }
-    furi_hal_subghz_stop_async_tx();
-    furi_hal_subghz_sleep();
 
+    furi_hal_subghz_sleep();
     furi_hal_power_suppress_charge_exit();
 
     flipper_format_free(flipper_format);
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_0.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_0.png
new file mode 100644
index 00000000..8b8dc80b
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_0.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_1.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_1.png
new file mode 100644
index 00000000..956de617
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_1.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_10.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_10.png
new file mode 100644
index 00000000..93fdaa07
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_10.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_11.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_11.png
new file mode 100644
index 00000000..a4e19482
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_11.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_12.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_12.png
new file mode 100644
index 00000000..9cbcbd07
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_12.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_13.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_13.png
new file mode 100644
index 00000000..a745cdb0
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_13.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_14.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_14.png
new file mode 100644
index 00000000..768f471e
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_14.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_15.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_15.png
new file mode 100644
index 00000000..2f50fb8c
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_15.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_16.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_16.png
new file mode 100644
index 00000000..fc7b7669
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_16.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_17.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_17.png
new file mode 100644
index 00000000..013e2008
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_17.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_18.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_18.png
new file mode 100644
index 00000000..795120e7
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_18.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_19.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_19.png
new file mode 100644
index 00000000..52061a5a
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_19.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_2.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_2.png
new file mode 100644
index 00000000..10afed39
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_2.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_20.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_20.png
new file mode 100644
index 00000000..52f87f3a
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_20.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_21.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_21.png
new file mode 100644
index 00000000..9696e0b5
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_21.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_22.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_22.png
new file mode 100644
index 00000000..d23ee492
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_22.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_23.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_23.png
new file mode 100644
index 00000000..9d368900
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_23.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_24.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_24.png
new file mode 100644
index 00000000..daf0788a
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_24.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_25.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_25.png
new file mode 100644
index 00000000..b4033365
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_25.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_26.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_26.png
new file mode 100644
index 00000000..9d499f23
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_26.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_27.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_27.png
new file mode 100644
index 00000000..0291dfb5
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_27.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_28.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_28.png
new file mode 100644
index 00000000..54a889d8
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_28.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_29.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_29.png
new file mode 100644
index 00000000..ba79b3b8
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_29.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_3.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_3.png
new file mode 100644
index 00000000..bedf366c
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_3.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_30.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_30.png
new file mode 100644
index 00000000..0731760d
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_30.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_31.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_31.png
new file mode 100644
index 00000000..898efdc4
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_31.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_32.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_32.png
new file mode 100644
index 00000000..39f5db8a
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_32.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_33.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_33.png
new file mode 100644
index 00000000..bee4cff0
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_33.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_34.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_34.png
new file mode 100644
index 00000000..969b9119
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_34.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_35.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_35.png
new file mode 100644
index 00000000..a72cf182
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_35.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_36.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_36.png
new file mode 100644
index 00000000..9a13e7c6
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_36.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_37.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_37.png
new file mode 100644
index 00000000..da3ee77f
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_37.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_38.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_38.png
new file mode 100644
index 00000000..93da7f4f
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_38.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_39.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_39.png
new file mode 100644
index 00000000..7510931b
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_39.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_4.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_4.png
new file mode 100644
index 00000000..f99454b1
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_4.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_40.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_40.png
new file mode 100644
index 00000000..a17a1404
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_40.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_41.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_41.png
new file mode 100644
index 00000000..f763540c
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_41.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_42.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_42.png
new file mode 100644
index 00000000..97a829e9
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_42.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_43.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_43.png
new file mode 100644
index 00000000..7eadf751
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_43.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_44.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_44.png
new file mode 100644
index 00000000..5241195d
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_44.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_45.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_45.png
new file mode 100644
index 00000000..2a3ea8e2
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_45.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_46.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_46.png
new file mode 100644
index 00000000..f4b263b1
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_46.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_47.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_47.png
new file mode 100644
index 00000000..1563ff39
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_47.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_5.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_5.png
new file mode 100644
index 00000000..394bb53d
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_5.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_6.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_6.png
new file mode 100644
index 00000000..3f84ad47
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_6.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_7.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_7.png
new file mode 100644
index 00000000..8ea650ad
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_7.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_8.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_8.png
new file mode 100644
index 00000000..2c8cf3f5
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_8.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/frame_9.png b/assets/dolphin/external/L1_Kaiju_128x64/frame_9.png
new file mode 100644
index 00000000..caf6a90e
Binary files /dev/null and b/assets/dolphin/external/L1_Kaiju_128x64/frame_9.png differ
diff --git a/assets/dolphin/external/L1_Kaiju_128x64/meta.txt b/assets/dolphin/external/L1_Kaiju_128x64/meta.txt
new file mode 100644
index 00000000..597f4b69
--- /dev/null
+++ b/assets/dolphin/external/L1_Kaiju_128x64/meta.txt
@@ -0,0 +1,50 @@
+Filetype: Flipper Animation
+Version: 1
+
+Width: 128
+Height: 64
+Passive frames: 16
+Active frames: 60
+Frames order: 0 1 2 1 0 3 4 5 6 3 7 1 8 1 7 9 0 10 11 12 13 14 15 16 14 12 17 18 19 20 21 22 22 23 22 24 25 26 27 26 25 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 19 18 14 45 14 45 14 45 14 45 14 16 14 14 11 46 47 1
+Active cycles: 1
+Frame rate: 2
+Duration: 3600
+Active cooldown: 7
+
+Bubble slots: 1
+
+Slot: 0
+X: 83
+Y: 42
+Text: Sup
+AlignH: Left
+AlignV: Top
+StartFrame: 38
+EndFrame: 40
+
+Slot: 0
+X: 66
+Y: 35
+Text: What just
+AlignH: Left
+AlignV: Center
+StartFrame: 62
+EndFrame: 65
+
+Slot: 0
+X: 66
+Y: 35
+Text: happened?
+AlignH: Left
+AlignV: Center
+StartFrame: 66
+EndFrame: 68
+
+Slot: 0
+X: 87
+Y: 38
+Text: Idk
+AlignH: Left
+AlignV: Top
+StartFrame: 70
+EndFrame: 70
diff --git a/assets/dolphin/external/manifest.txt b/assets/dolphin/external/manifest.txt
index 42991523..92215471 100644
--- a/assets/dolphin/external/manifest.txt
+++ b/assets/dolphin/external/manifest.txt
@@ -90,6 +90,13 @@ Min butthurt: 0
 Max butthurt: 5
 Min level: 1
 Max level: 3
+Weight: 3
+
+Name: L1_Kaiju_128x64
+Min butthurt: 0
+Max butthurt: 10
+Min level: 1
+Max level: 3
 Weight: 4
 
 Name: L2_Wake_up_128x64
diff --git a/firmware/targets/f18/api_symbols.csv b/firmware/targets/f18/api_symbols.csv
index 7f0dcebd..3c075e0d 100644
--- a/firmware/targets/f18/api_symbols.csv
+++ b/firmware/targets/f18/api_symbols.csv
@@ -1,5 +1,5 @@
 entry,status,name,type,params
-Version,+,28.1,,
+Version,+,28.2,,
 Header,+,applications/services/bt/bt_service/bt.h,,
 Header,+,applications/services/cli/cli.h,,
 Header,+,applications/services/cli/cli_vcp.h,,
@@ -80,6 +80,7 @@ Header,+,firmware/targets/furi_hal_include/furi_hal_usb_hid.h,,
 Header,+,firmware/targets/furi_hal_include/furi_hal_usb_hid_u2f.h,,
 Header,+,firmware/targets/furi_hal_include/furi_hal_version.h,,
 Header,+,firmware/targets/furi_hal_include/furi_hal_vibro.h,,
+Header,+,lib/digital_signal/digital_signal.h,,
 Header,+,lib/flipper_application/api_hashtable/api_hashtable.h,,
 Header,+,lib/flipper_application/api_hashtable/compilesort.hpp,,
 Header,+,lib/flipper_application/flipper_application.h,,
@@ -617,6 +618,24 @@ Function,+,dialog_message_set_text,void,"DialogMessage*, const char*, uint8_t, u
 Function,+,dialog_message_show,DialogMessageButton,"DialogsApp*, const DialogMessage*"
 Function,+,dialog_message_show_storage_error,void,"DialogsApp*, const char*"
 Function,-,difftime,double,"time_t, time_t"
+Function,-,digital_sequence_add,void,"DigitalSequence*, uint8_t"
+Function,-,digital_sequence_alloc,DigitalSequence*,"uint32_t, const GpioPin*"
+Function,-,digital_sequence_clear,void,DigitalSequence*
+Function,-,digital_sequence_free,void,DigitalSequence*
+Function,-,digital_sequence_send,_Bool,DigitalSequence*
+Function,-,digital_sequence_set_sendtime,void,"DigitalSequence*, uint32_t"
+Function,-,digital_sequence_set_signal,void,"DigitalSequence*, uint8_t, DigitalSignal*"
+Function,-,digital_sequence_timebase_correction,void,"DigitalSequence*, float"
+Function,-,digital_signal_add,void,"DigitalSignal*, uint32_t"
+Function,-,digital_signal_add_pulse,void,"DigitalSignal*, uint32_t, _Bool"
+Function,-,digital_signal_alloc,DigitalSignal*,uint32_t
+Function,-,digital_signal_append,_Bool,"DigitalSignal*, DigitalSignal*"
+Function,-,digital_signal_free,void,DigitalSignal*
+Function,-,digital_signal_get_edge,uint32_t,"DigitalSignal*, uint32_t"
+Function,-,digital_signal_get_edges_cnt,uint32_t,DigitalSignal*
+Function,-,digital_signal_get_start_level,_Bool,DigitalSignal*
+Function,-,digital_signal_prepare_arr,void,DigitalSignal*
+Function,-,digital_signal_send,void,"DigitalSignal*, const GpioPin*"
 Function,-,diprintf,int,"int, const char*, ..."
 Function,+,dir_walk_alloc,DirWalk*,Storage*
 Function,+,dir_walk_close,void,DirWalk*
diff --git a/firmware/targets/f7/api_symbols.csv b/firmware/targets/f7/api_symbols.csv
index 1259f0fc..a9ce0c26 100644
--- a/firmware/targets/f7/api_symbols.csv
+++ b/firmware/targets/f7/api_symbols.csv
@@ -1,5 +1,5 @@
 entry,status,name,type,params
-Version,+,28.1,,
+Version,+,28.2,,
 Header,+,applications/services/bt/bt_service/bt.h,,
 Header,+,applications/services/cli/cli.h,,
 Header,+,applications/services/cli/cli_vcp.h,,
@@ -86,6 +86,7 @@ Header,+,firmware/targets/furi_hal_include/furi_hal_usb_hid.h,,
 Header,+,firmware/targets/furi_hal_include/furi_hal_usb_hid_u2f.h,,
 Header,+,firmware/targets/furi_hal_include/furi_hal_version.h,,
 Header,+,firmware/targets/furi_hal_include/furi_hal_vibro.h,,
+Header,+,lib/digital_signal/digital_signal.h,,
 Header,+,lib/flipper_application/api_hashtable/api_hashtable.h,,
 Header,+,lib/flipper_application/api_hashtable/compilesort.hpp,,
 Header,+,lib/flipper_application/flipper_application.h,,
diff --git a/firmware/targets/f7/target.json b/firmware/targets/f7/target.json
index c5036445..e3dc7832 100644
--- a/firmware/targets/f7/target.json
+++ b/firmware/targets/f7/target.json
@@ -28,6 +28,7 @@
         "flipperformat",
         "toolbox",
         "nfc",
+        "digital_signal",
         "pulse_reader",
         "microtar",
         "usb_stm32",
diff --git a/lib/ReadMe.md b/lib/ReadMe.md
index 93236b26..138bef2b 100644
--- a/lib/ReadMe.md
+++ b/lib/ReadMe.md
@@ -27,6 +27,7 @@
 - `nfc`                 - NFC library, used by NFC application
 - `one_wire`            - OneWire library, used by iButton application
 - `print`               - Tiny printf implementation
+- `digital_signal`      - Digital Signal library used by NFC for software implemented protocols
 - `pulse_reader`        - Pulse Reader library used by NFC for software implemented protocols
 - `qrcode`              - QR-Code library
 - `stm32wb_cmsis`       - STM32WB series CMSIS headers, extends CMSIS Core
diff --git a/lib/SConscript b/lib/SConscript
index 8727746d..495ba4bf 100644
--- a/lib/SConscript
+++ b/lib/SConscript
@@ -15,7 +15,6 @@ env.Append(
         Dir("u8g2"),
         Dir("update_util"),
         Dir("print"),
-        Dir("pulse_reader"),
     ],
 )
 
@@ -95,6 +94,7 @@ libs = env.BuildModules(
         "mbedtls",
         "subghz",
         "nfc",
+        "digital_signal",
         "pulse_reader",
         "appframe",
         "misc",
diff --git a/lib/digital_signal/SConscript b/lib/digital_signal/SConscript
new file mode 100644
index 00000000..2ddf7a58
--- /dev/null
+++ b/lib/digital_signal/SConscript
@@ -0,0 +1,20 @@
+Import("env")
+
+env.Append(
+    CPPPATH=[
+        "#/lib/digital_signal",
+    ],
+    SDK_HEADERS=[
+        File("digital_signal.h"),
+    ],
+)
+
+libenv = env.Clone(FW_LIB_NAME="digital_signal")
+libenv.ApplyLibFlags()
+libenv.Append(CCFLAGS=["-O3", "-funroll-loops", "-Ofast"])
+
+sources = libenv.GlobRecursive("*.c*")
+
+lib = libenv.StaticLibrary("${FW_LIB_NAME}", sources)
+libenv.Install("${LIB_DIST_DIR}", lib)
+Return("lib")
diff --git a/lib/digital_signal/digital_signal.c b/lib/digital_signal/digital_signal.c
index ab25458b..94dbeeab 100644
--- a/lib/digital_signal/digital_signal.c
+++ b/lib/digital_signal/digital_signal.c
@@ -212,8 +212,7 @@ void digital_signal_prepare_arr(DigitalSignal* signal) {
     internals->reload_reg_entries = 0;
 
     for(size_t pos = 0; pos < signal->edge_cnt; pos++) {
-        uint32_t edge_scaled = (internals->factor * signal->edge_timings[pos]) / (1024 * 1024);
-        uint32_t pulse_duration = edge_scaled + internals->reload_reg_remainder;
+        uint32_t pulse_duration = signal->edge_timings[pos] + internals->reload_reg_remainder;
         if(pulse_duration < 10 || pulse_duration > 10000000) {
             FURI_LOG_D(
                 TAG,
diff --git a/lib/misc.scons b/lib/misc.scons
index 1ff6e2fb..10aa3f9d 100644
--- a/lib/misc.scons
+++ b/lib/misc.scons
@@ -4,7 +4,6 @@ Import("env")
 
 env.Append(
     CPPPATH=[
-        "#/lib/digital_signal",
         "#/lib/fnv1a_hash",
         "#/lib/heatshrink",
         "#/lib/micro-ecc",
@@ -26,7 +25,6 @@ libenv.ApplyLibFlags()
 sources = []
 
 libs_recurse = [
-    "digital_signal",
     "micro-ecc",
     "u8g2",
     "update_util",
diff --git a/scripts/flipper/assets/dolphin.py b/scripts/flipper/assets/dolphin.py
index ebe9fd88..b4a53a62 100644
--- a/scripts/flipper/assets/dolphin.py
+++ b/scripts/flipper/assets/dolphin.py
@@ -49,11 +49,11 @@ class DolphinBubbleAnimation:
 
     def load(self, animation_directory: str):
         if not os.path.isdir(animation_directory):
-            raise Exception(f"Animation folder doesn't exists: { animation_directory }")
+            raise Exception(f"Animation folder doesn't exist: { animation_directory }")
 
         meta_filename = os.path.join(animation_directory, "meta.txt")
         if not os.path.isfile(meta_filename):
-            raise Exception(f"Animation meta file doesn't exists: { meta_filename }")
+            raise Exception(f"Animation meta file doesn't exist: { meta_filename }")
 
         self.logger.info(f"Loading meta from {meta_filename}")
         file = FlipperFormatFile()