I almost completely HOSED my Pearl. I updated to the ALLTEL and unlocked all the themes. When my phone started again, I got the Vodafone theme loaded and app error 200. Boi I was scurred as hell.

So, I left it, until i got home from work and reloaded the Sprint OS. WHEW! mY HEART WAS GOING NUTZ! I used the instructions "without the battery", but the computer would not recognize it either way, and I certainly was not about to WIPE my phone. So I used the same instructions with the battery installed and it worked :-)))))))))))))))