[Guide] How to flash a modded AMI UEFI BIOS

Then CH341A programmer
or
Intel FPT tool from ME9 system tools package, but FD has to be unlocked.

Read the links to understand the procedures and perform as admin CMD:
FPT.exe -d SPI.bin (a full backup to store safelly)
and FPT.exe -bios -d biosreg.bin, if successful reading, in this one only a bios region only backup will be created.
Then this file if FPT.exe -bios -f biosreg.bin can be flashed, it means that its unlocked and you may use it to flash a mod bios region.