Originally Posted by DovahkiinItachi
I need to know how to UNLOCK a iphone 3g w/Baseband 05.15 / Bootloader 06.04.. i'm not getting any service
Suprised you haven't upgraded to a 4 or 4s.
Anyhow, an untethered Breakjail, automatically unlocks your 3g, as long as you do it correctly:
5.1.1 = Absinth (v2) (My reccomendation)
5.0.1 = RedSnow (v0.9.6+)
Those are the only 2 firmware you can be on, on your phone in order to have an untethered (unlocked and brokenjailed) successful breakjail.
Hope i have been of some successful 'service'. lol. :-p