          if ret == 0:
              cksum = cksum.split()[0]
          else:
-@@ -770,11 +775,11 @@ class install_update_payload(update_type
+@@ -792,11 +797,11 @@ class install_update_payload(update_type
              return ver_info[1]
          else:
              # the crc32 of VER partition is invalid

             dev_offset = 0
 
             part_name_base = part_name
@@ -1130,9 +1135,9 @@ class install_update_payload(update_type
                 update_bin_data *= block0_bct_cpy
                 update_bin_data_size *= block0_bct_cpy
                 if block0_bct_cpy > 1:

                 return False
 
             # if the crc values in VER and VER_b are same,
@@ -864,8 +869,8 @@ class install_update_payload(update_type
             # check if NVC and NVC-1 partitions matched before a fresh OTA,
             # if not matched, it means the redundancy path may corrupt,  must re-flash the device.
             if ((ver_crc32 == ver_b_crc32) and (self._check_nvc_part() is False)):
