i used pwnage tool to jb&unlock(what you need for t-mobile, which i have.)my iphone last year. Just a warning the gba emulator doesnt work if you jb with pwnage tool with 3.1.3 firmware
im about to jb and unlock a 3g that im going to buy tomorrow so ill help you as i go through the process myself if needed.
"how was it"
"lets just say, if i tried to masturbate right now, a little flag would come out that says "bang"-Thomas
"you buy drugs, i buy jeans, i don't tell you how much your fucking weed should cost, get the fuck out."-steezemeister
"It is thomas's life goal to post things in threads that convey his personal relationship with the on3p guys."- Alex Berner