- work in progress - Instructions for flashing the VBIOS of an AMD / ATI video card: You'll need: A VBIOS file you want to flash The latest version of ATIflash, a DOS utility to flash the VBIOS A USB drive, formatted to boot DOS, in order to use ATIflash How to create a bootable USB flash drive: Flashing procedure: Once you've prepared your USB drive, put ATIflash to the root of the drive, same with the VBIOS file you want to flash. NOTE:DOS has a limit of 8 char