diff --git a/scripts/prd.gd b/scripts/prd.gd
index 4ad59d2..d09a66f 100644
--- a/scripts/prd.gd
+++ b/scripts/prd.gd
@@ -323,7 +323,5 @@ func update_fs_state(ecms):
 ## Проверяет ниличие директории, если их нет, создаёт
 func check_dir():
     var dir = DirAccess.open(yemsconsts.emsg_files_folder)
-    if dir:
-        return
-    else:
-        DirAccess.make_dir_absolute(yemsconsts.emsg_files_folder)
+    if dir: return
+    else: DirAccess.make_dir_absolute(yemsconsts.emsg_files_folder)
diff --git a/scripts/yau07.gd b/scripts/yau07.gd
index 8476f95..75665a2 100644
--- a/scripts/yau07.gd
+++ b/scripts/yau07.gd
@@ -218,6 +218,8 @@ class YaU07 extends unit.Unit:
         var i: = 0
         while i < ports_count:
             var shift: = i * 4
+            if rx_data.size() < (data_pos + shift):
+                return false
             var isa_addr = rx_data.decode_u16(addr_pos + shift)  # Адрес порта ISA яу-07
             var isa_data = rx_data.decode_u16(data_pos + shift)  # Данные порта ISA яу-07
             isa_ports[isa_addr] = isa_data
@@ -229,20 +231,28 @@ class YaU07 extends unit.Unit:
         var ports_count_pos = status_len + 7             # Положение в приёмном буфере количества портов
         if rx_data.size() < ports_count_pos:
             return false
+        if rx_data.size() < (ports_count_pos + 5):
+            return false
         var block_len = rx_data.decode_u16(ports_count_pos + 3)
         var block_adr =  rx_data.decode_u16(ports_count_pos + 5)
         var block_data = []
         for i in block_len:
             var shift: int = i * 2
+            if rx_data.size() < (ports_count_pos + 7 + shift):
+                return false
             block_data.append(rx_data.decode_u16(ports_count_pos + 7 + shift))
         isa_block[block_adr] = block_data
         return true
 
     func parse_flash(rx_data: PackedByteArray, status_len, cmd_code) -> bool:
         if cmd_code == CmdCode.READ_FLASH:
+            if rx_data.size() < (status_len + 14):
+                return false
             flash_len = rx_data.decode_u16(status_len + 12)
             flash_data = rx_data.slice(status_len + 14)
         if cmd_code == CmdCode.READ_FLASH_MP550:
+            if rx_data.size() < (status_len + 15):
+                return false
             flash_len = rx_data.decode_u16(status_len + 13)
             flash_data = rx_data.slice(status_len + 15)
         return true