Hi all, A friend of mine is getting the new 3G Iphone tomorrow. He is currently on ATT. I plan on buying his old phone and using Ziphone to unlock and jailbreak it so I can I can use it on Tmobile. I beleive he is currently on version 1.1.4. I searched all over and I am unable to find any information about unlocking a used Iphone that has already been activated on ATT. Is there anything special I need to do or do I just follow the prompts for activating and unlocking through Ziphone? Thanks!