GPS Upgrade Fails Phone Possibly Bricked Please Help

[spatha]

Any help would be very much appreciated.
I was attempting to upgrade my phone to gps capabilities using this guide
http://www.phonenews.com/how-to-add-...00-titan-2663/
Everything was working fine but i accidentally skipped the step after running the unlocker, (Once it has been completed, launch the device’s software update. Follow the instructions on screen for the updater.), and went straight to running the baseband radio firmware update and finished. I don't know how i missed it but i did. After several hours of frantic tinkering trying to get back to the original rom, i think im completely screwed. I am stuck at the alltel carrier screen, cant connect to activesync so i dont know how to load the original rom, i can get into the bootloader i have used the exit bootloader utility but still gets stuck at alltel screen on restart i have tried the relocker but cant connect to activesync

Sorry for the lengthy paragraph but would be extremely grateful for any help.