If your chip is flashable using the EvolutionX dash that's the easiest way to go. Just FTP your new bios to C:\bios\ and use the Flash Bios option in the EvolutionX dash. Make sure the bios is the correct size for your chip. RustyDog
some bios are 265k in size, some are 512k in size and some come in 1024k in size. Depeding on your chip choose the right size of bios. Note some bios that are 256k can be converted to 1024k if neccery.