I can try, but the mod can brick this PC easily. Do you have a SPI flash programmer for BIOS recovery?
Thanks for the feedback It's not a permanent - Slic will be lost after the bios upgrade... Since your MoBo have something like "bios flashback", we can try to flash the latest modified bios
try to write your UUID/MAC with https://forums.mydigitallife.net/threads/bios-tools.529/page-38#post-1439297 https://forums.mydigitallife.net/threads/bios-tools.529/page-42#post-1506628 https://forums.mydigitallife.net/threads/bios-tools.529/page-42#post-1505526 ...