You are going to want to get your hands on flashbios 3.0.3 unauthorized with embedded eeproms. Get it from xbins in xecuter bioses folder.
How you get that on the chip is up to you. I know it'll work on a Doux2, cause I've done the same thing and used a DouX2 + flashbios unauth to fix it. It should work on your chip too.
Once you get flashbios loaded, select the correct eeprom version for your xbox, and flash, turn the xbox off, on, then flash your original eeprom back.
Next time, either use XBHDM or use liveinfo beta 3 (windows app) to change the Unique HDD key on the CORRECT version eeprom. (Do not try to just load an eeprom, change versions and save, it won't work.)