fairly new to all this....got my iphone 2g 4g off e-bay....it was jailbroken and unlocked.....etc etc.....

i wanted to upgrade to 2.1 and did so with pwnage.....now i wanted to upgrade to 2.2 and used QuickPwn......my heart skipped a beat when i went to do all this and the Bl files were missing.....but i used the old ones from my 2.1 upgrade and it worked fine

just a bit of advice