Hi all. I need some quick help and dont have time to research. can someone please give me some quick advice. I just sold my 3gs. The person wants it unlocked. I have 3.1.2 jailbroken w/ blackra1n. I didnt unlock it because i have at&t. my firmware is 5.11.07 what do i need to do to unlock it? its been a while since i did my jailbreak and im in a time crunch as they are coming to pick it up and dont have alot of time to research.