Here is my setup for making DOS bootable USB stick. I then added unpacked mod to stick and booted to DOS. And still get this error message: Efiflash X470AOUG.F51 This program cannot be run in DOS mode.
I can't figure what I'm doing wrong. Have been doing this process for years. Prepare USB with freedos(fat32). Transfer modded files to formatted usb. Reboot to non UEFI usb and type flash.bat Can't be any simpler
AMI utility does not works with this BIOS from Gigabyte (must use Efiflash.efi). Enter into the BIOS, set Fast boot to Disable, OS to Legacy and first try to flash the official BIOS F51 from pure DOS env.