If the xbox works, then you can softmod it using mech assault, 007 agent under fire, or splinter cell and a softmod package. Don't use the platinum version of any of those because the exploit will have been patched.
If you have made a backup of your EEPROM, then you could just FTP into your xbox's C drive and recover it....
I had to do this myself in order to unlock my xbox's hard drive for other purposes, and I probably wasted a whole week trying to do this before I found the proper tutorial
Engineers like to solve problems. If there are no problems handily available, they will create their own problems.