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.