Help modding of Shuttle DX30 Aptio 5 Bios

Hi,

I’m trying to flash a modded bios based on http://download.shuttle.eu/Mirror/Slim/D…X30D000.101.ZIP

When I try to flash it I get this error message:

c:\Share\AfuWin64>AFUWINx64.EXE DX30D000.101 /P
±--------------------------------------------------------------------------+
| AMI Firmware Update Utility v5.08.02.1189 |
| Copyright (C)2016 American Megatrends Inc. All Rights Reserved. |
±--------------------------------------------------------------------------+
Reading flash … done
Secure Flash enabled, recalculate ROM size with signature… Enable.
- FFS checksums … ok
Loading capsule to secure memory buffer … done
18 - Error: Secure Flash Rom Verify fail.

Does someone know how to bypass it ?
I allready tried with different flash tools but it’s not working.

Thanks!