well thanks guys..... For anyone who stumbles across this forum You need to blind flash your bios. For me i try putting the command together and it didn't work. As long as your cd/usb/etc is bootable keep your atiflash on it take off the new bios and put the old bios on it. force the command: atiflash -f -p 0 (myBIOS).bin" at the bootable screen and it worked!
a source that might help: http://www.tomshardware.com/forum/258154-33-updating-4850-bios-failed