A girlfriend of mine asked me if it's possible to unlock her iPhone 3G running FW 4.2.1 and BB 05.15.04. I googled these figures to see if I can find a way but all I seem to find is articles from November/December '10 which state that you need to update the baseband to the iPad baseband. Is there currently any other way to do it? I could probably do the update for her, but I believe she wants to sell the phone and I wouldn't want there to be problems later on (since I've read that you can't downgrade the baseband). Any info will be appreciated, thanks.