? Only one for the X3 so I don't think so.....
Can you boot to the X3 Bios, hold down the white button on boot or does it frag before?
Is it PAL or NTSC? you might have to do a full reset, XYBA, have a search for resetting the X3:
Boot XBOX into config live.
After you think you are in config live, press 'A'.
Now press 'up' twice, then 'A'.
Now press 'left' once, then 'A'.
What version Box is it if its 1.6b then I don't think the xapt3r is compatible, needs a solder install.
Download a different Bios, an earlier version? you will probably have to boot to the back up bios first. Are you using 512 or 1 meg bios? how are you installing the bios, FTP or cd/DVD?