To update through ROM - Option 1: (untested, should work though) Download the correct BIOS update - save it to the C:\ Directory. Reboot and enter BIOS (To enter BIOS repeatedly press "DEL"/"DELETE" BEFORE the Windows Logo shows). Navigate to the C:\ Directory, and find the ROM file. Update your BIOS. Option 2: And if I remember correctly, X58 should have a BIOS Flashback Option (Or BIOS Save option) to save all the details BEFORE updating.