CD flashing? Why not!
dmp and I spent a couple of hours debugging the iso9660 driver in Cromwell and fixed it to allow flashing from CD! Many thanks to him!
Now for the boring stuff... Your BIOS must be on CD (duh) named "image.bin" - it can be of any size but must be divisible by 256 (e.g. 256K, 512K, 768K, 1024K...).

This has been tested with a 256K BIOS and a 1024K BIOS on an X2Pro. See the manual and previous post for disclaimers. To summarise: I will not be held accountable for bad flashes or misuse of this programme.
Run magic to update gentoox.xbe on your E: drive.