CODE
WARNING!WARNING!WARNING!WARNING!WARNING!WARNING!WARNING!WARNING!WARNING
If you have a retail modded xbox [....]
[...] hose your xbox!
WARNING!WARNING!WARNING!WARNING!WARNING!WARNING!WARNING!WARNING!WARNING
Sry but you deserve that for not reading NFO (or guides all over the internet)
What did you want to do with it anyway, not reading readme's doesn't seem like a developerspirit at all.
But it's too late for that
I think you need to flash your modchip through some other method (USB, RS232, hotswap? etc.) with a BIOS with embedded EEPROM. Your HD is probably fuxed too so try a bootable homebrew disc like Slayers and fix partitions.