A hard drive image that you can stick on your CompactFlash card and boot to in order to flash your BIOS. Contains DOS USB drivers in case your BIOS does not supprot USB Legacy Mode and comes equipped with all of the BIOS ROMs that I can find.

Similar to above, but it is based off of FreeDOS and includes many tools. You won't be able to use them without adding the USB keyboard driver (ohci from the bios flash image) or turning on USB Legacy support.