What did you expected??? Modern motherboards containing revised AMI Aptio V bios files and AMI Core bios security, prevents almost all bios mods (modified…) from being flashed by regular know/specific MB methods… welcome to mod world my friend…
Take a walk and read on the forum other users posts and you’ll find out that you’re not alone on this…
SPI_TPM header?
If even possible on this MB model…search…read, read a lot.
EDIT:
Could something like afuefi work
It shouldn’t, as its an AMI official flash tool, so…
Another method to try if you have any experience with the Intel ME tools package…and dont ask how, i dont have time for such background teaching:
[GUIDE] [UPDATE] Usage of AMI’s AptioV UEFI Editor + FPT Flash Method - BIOS/UEFI Modding / BIOS Modding Guides and Problems - Win-Raid Forum (level1techs.com)
This will only/can work if the access to bios regions is unlocked for writing:
[Guide] Unlock Intel Flash Descriptor Read/Write Access Permissions for SPI Servicing - Special Topics / Intel Management Engine - Win-Raid Forum (level1techs.com)
Thats it, nothing more to add, good luck.