Who can help me with the issue of Flash EC Firmware?

[qqpp]

Hi,Everyone.
I have a MECHREVO S1 and then I found that this uses the same motherboard mold as the MSI PS42 8RB, marked MS-14B1 Ver: 1.0 on the motherboard.
Currently I haved burned the latest BIOS version of the MSI PS42 8RB E14B1IMS.10C and all functions are working fine.
However, it is not possible to burn EC Firmware version 14B1EMS1.109 and the error message is "Product ID is incorrect!"
Now I am almost sure that the BIOS and EC are working properly. But don't know how to skip product ID verification. 
I have tried to modify the SMBIOS table information and there is still no way to solve it.
who can help me? thanks.