diff --git a/lib/subghz/protocols/alutech_at_4n.c b/lib/subghz/protocols/alutech_at_4n.c
index d0c410e1ce..71e1aca323 100644
--- a/lib/subghz/protocols/alutech_at_4n.c
+++ b/lib/subghz/protocols/alutech_at_4n.c
@@ -306,16 +306,22 @@ bool subghz_protocol_alutech_at_4n_create_data(
     instance->generic.serial = serial;
     instance->generic.cnt = cnt;
     instance->generic.data_count_bit = 72;
-    bool res = subghz_protocol_alutech_at_4n_gen_data(instance, btn);
-    if(res) {
+    if(subghz_protocol_alutech_at_4n_gen_data(instance, btn)) {
         if((subghz_block_generic_serialize(&instance->generic, flipper_format, preset) !=
-            SubGhzProtocolStatusOk) ||
-           !flipper_format_write_uint32(flipper_format, "CRC", &instance->crc, 1)) {
+            SubGhzProtocolStatusOk)) {
+            FURI_LOG_E(TAG, "Serialize error");
+            return false;
+        }
+        if(!flipper_format_rewind(flipper_format)) {
+            FURI_LOG_E(TAG, "Rewind error");
+            return false;
+        }
+        if(!flipper_format_insert_or_update_uint32(flipper_format, "CRC", &instance->crc, 1)) {
             FURI_LOG_E(TAG, "Unable to add CRC");
-            res = false;
+            return false;
         }
     }
-    return res;
+    return true;
 }
 
 /**
@@ -665,8 +671,12 @@ SubGhzProtocolStatus subghz_protocol_decoder_alutech_at_4n_serialize(
     SubGhzProtocolDecoderAlutech_at_4n* instance = context;
     SubGhzProtocolStatus res =
         subghz_block_generic_serialize(&instance->generic, flipper_format, preset);
+    if(!flipper_format_rewind(flipper_format)) {
+        FURI_LOG_E(TAG, "Rewind error");
+        res = SubGhzProtocolStatusErrorParserOthers;
+    }
     if((res == SubGhzProtocolStatusOk) &&
-       !flipper_format_write_uint32(flipper_format, "CRC", &instance->crc, 1)) {
+       !flipper_format_insert_or_update_uint32(flipper_format, "CRC", &instance->crc, 1)) {
         FURI_LOG_E(TAG, "Unable to add CRC");
         res = SubGhzProtocolStatusErrorParserOthers;
     }
diff --git a/lib/subghz/protocols/keeloq.c b/lib/subghz/protocols/keeloq.c
index 60ff2f0f16..12d739dec9 100644
--- a/lib/subghz/protocols/keeloq.c
+++ b/lib/subghz/protocols/keeloq.c
@@ -355,12 +355,12 @@ bool subghz_protocol_keeloq_create_data(
     instance->generic.cnt = cnt;
     instance->manufacture_name = manufacture_name;
     instance->generic.data_count_bit = 64;
-    bool res = subghz_protocol_keeloq_gen_data(instance, btn, false);
-    if(res) {
-        return SubGhzProtocolStatusOk ==
-               subghz_block_generic_serialize(&instance->generic, flipper_format, preset);
+    if(subghz_protocol_keeloq_gen_data(instance, btn, false)) {
+        return (
+            subghz_block_generic_serialize(&instance->generic, flipper_format, preset) ==
+            SubGhzProtocolStatusOk);
     }
-    return res;
+    return false;
 }
 
 bool subghz_protocol_keeloq_bft_create_data(
@@ -380,13 +380,13 @@ bool subghz_protocol_keeloq_bft_create_data(
     instance->generic.seed = seed;
     instance->manufacture_name = manufacture_name;
     instance->generic.data_count_bit = 64;
-    // roguuemaster don't steal.!!!!
-    bool res = subghz_protocol_keeloq_gen_data(instance, btn, false);
-    if(res) {
-        return SubGhzProtocolStatusOk ==
-               subghz_block_generic_serialize(&instance->generic, flipper_format, preset);
+    // hehehehe
+    if(subghz_protocol_keeloq_gen_data(instance, btn, false)) {
+        return (
+            subghz_block_generic_serialize(&instance->generic, flipper_format, preset) ==
+            SubGhzProtocolStatusOk);
     }
-    return res;
+    return false;
 }
 
 /**
diff --git a/lib/subghz/protocols/kinggates_stylo_4k.c b/lib/subghz/protocols/kinggates_stylo_4k.c
index 0f7ae06d59..56795d2dd1 100644
--- a/lib/subghz/protocols/kinggates_stylo_4k.c
+++ b/lib/subghz/protocols/kinggates_stylo_4k.c
@@ -307,7 +307,7 @@ SubGhzProtocolStatus subghz_protocol_encoder_kinggates_stylo_4k_deserialize(
             key_data[sizeof(uint64_t) - i - 1] = (instance->generic.data_2 >> i * 8) & 0xFF;
         }
         if(!flipper_format_update_hex(flipper_format, "Data", key_data, sizeof(uint64_t))) {
-            FURI_LOG_E(TAG, "Unable to add Key");
+            FURI_LOG_E(TAG, "Unable to update Data");
             break;
         }
 
@@ -522,8 +522,13 @@ SubGhzProtocolStatus subghz_protocol_decoder_kinggates_stylo_4k_serialize(
         key_data[sizeof(uint64_t) - i - 1] = (instance->generic.data_2 >> (i * 8)) & 0xFF;
     }
 
+    if(!flipper_format_rewind(flipper_format)) {
+        FURI_LOG_E(TAG, "Rewind error");
+        ret = SubGhzProtocolStatusErrorParserOthers;
+    }
+
     if((ret == SubGhzProtocolStatusOk) &&
-       !flipper_format_write_hex(flipper_format, "Data", key_data, sizeof(uint64_t))) {
+       !flipper_format_insert_or_update_hex(flipper_format, "Data", key_data, sizeof(uint64_t))) {
         FURI_LOG_E(TAG, "Unable to add Data");
         ret = SubGhzProtocolStatusErrorParserOthers;
     }
diff --git a/lib/subghz/protocols/nice_flor_s.c b/lib/subghz/protocols/nice_flor_s.c
index 8953e0d9e1..8694ec4c1e 100644
--- a/lib/subghz/protocols/nice_flor_s.c
+++ b/lib/subghz/protocols/nice_flor_s.c
@@ -267,7 +267,7 @@ SubGhzProtocolStatus
             key_data[sizeof(uint64_t) - i - 1] = (instance->generic.data >> i * 8) & 0xFF;
         }
         if(!flipper_format_update_hex(flipper_format, "Key", key_data, sizeof(uint64_t))) {
-            FURI_LOG_E(TAG, "Unable to add Key");
+            FURI_LOG_E(TAG, "Unable to update Key");
             break;
         }
 
@@ -278,7 +278,7 @@ SubGhzProtocolStatus
             }
             uint32_t temp = (instance->generic.data_2 >> 4) & 0xFFFFF;
             if(!flipper_format_update_uint32(flipper_format, "Data", &temp, 1)) {
-                FURI_LOG_E(TAG, "Unable to add Data");
+                FURI_LOG_E(TAG, "Unable to update Data");
             }
         }
 
@@ -707,8 +707,13 @@ SubGhzProtocolStatus subghz_protocol_decoder_nice_flor_s_serialize(
     SubGhzProtocolStatus ret =
         subghz_block_generic_serialize(&instance->generic, flipper_format, preset);
     if(instance->generic.data_count_bit == NICE_ONE_COUNT_BIT) {
+        if(!flipper_format_rewind(flipper_format)) {
+            FURI_LOG_E(TAG, "Rewind error");
+            ret = SubGhzProtocolStatusErrorParserOthers;
+        }
         if((ret == SubGhzProtocolStatusOk) &&
-           !flipper_format_write_uint32(flipper_format, "Data", (uint32_t*)&instance->data, 1)) {
+           !flipper_format_insert_or_update_uint32(
+               flipper_format, "Data", (uint32_t*)&instance->data, 1)) {
             FURI_LOG_E(TAG, "Unable to add Data");
             ret = SubGhzProtocolStatusErrorParserOthers;
         }