I bought my first iphone a few days ago and watched youtube video's and read this website for a week before i finally did. Now my problem.... I downgraded it from 2.0 to 1.1.4 firmware using bigboss instructions (thanks it worked flawlessly) and then used ziphone 3.0 to unlock and jailbreak. Now I can't get a signal on t-mobile. I have a couple of friends with iphone's on t-mobile and this is the process they used and worked for them. I'm at a stand still right now and will continue to read the website for more info but if anyone know anything that I forgot to do please let me know. Thanks...........