diff --git a/br-ext-chip-sigmastar/board/infinity6b0/kernel/patches/02_infinity6b0_kernel_4.9.84_sdk-Ispahan-ILS00V020_python3_check.patch b/br-ext-chip-sigmastar/board/infinity6b0/kernel/patches/02_infinity6b0_kernel_4.9.84_sdk-Ispahan-ILS00V020_python3_check.patch
index e3e42d4b..1c6fbd64 100644
--- a/br-ext-chip-sigmastar/board/infinity6b0/kernel/patches/02_infinity6b0_kernel_4.9.84_sdk-Ispahan-ILS00V020_python3_check.patch
+++ b/br-ext-chip-sigmastar/board/infinity6b0/kernel/patches/02_infinity6b0_kernel_4.9.84_sdk-Ispahan-ILS00V020_python3_check.patch
@@ -50,15 +50,16 @@
  
 --- a/scripts/ms_builtin_dtb_update.py	2021-05-17 00:51:18.868114209 +0300
 +++ b/scripts/ms_builtin_dtb_update.py	2021-05-17 00:02:41.886266869 +0300
-@@ -17,6 +17,11 @@
-         print ('DTB size 0x%08X too big to fit in 64K limit!!' % dtb.size())
-         sys.exit() 
-         
-+    if sys.version_info.major == 2:
-+        name=sys.argv[2]
-+    else:
-+        name=sys.argv[2].encode()
-+
+@@ -19,7 +19,11 @@
+
      fmap=mmap.mmap(os.open(sys.argv[1],os.O_RDWR),0)
- 
-     offset=fmap.find(name)    
+
+-    offset=fmap.find(name)
++    if sys.version_info.major == 2:
++        offset=fmap.find(name)
++    else:
++        offset=fmap.find(name.encode())
++
+     if offset >=0:
+         print ('offset:0x%08X' % offset)
+         print ('  size:0x%08X' % size )