[TOOL] UEFI Editor - BIOS/UEFI Modding / BIOS Modding Guides and Problems - Win-Raid Forum
Do NOT try to UNLOCK everything and do it by phases…it may reach a point that the boot will fail, since last mod, revert last mod action.
First, before any other operations:
See if the FD for bios_region write access is unlocked, you can flash the same region back to the system, to see if fpt lets you, cause besides this only unlocking FD or programmer, for mod files.
Using a bios_region dump of the current system: fpt -bios -f bios_reg.bin