you do not need that the x3 has a back up bios just push the power and eject button at same time you sould see flashbios 3.0.3 or 3.0.1 if you have a V1.6 xbox and you have flashbios 3.0.3 it will not work but keep trying i had to try for 20 times before i got it to work then set the swicth to on on off off off then flash it with x3 bios then once you get x3 config flash backup bios with flashbios 3.0.1 and your backup will work every time but if it work all the time the first time just live it aloan by the way when you get x3 bios running DO NOT SET PASSWORD there a bug in x3 bios