Complete history: Bought unlocked iphone from a friend. worked perfectly fine except that he had installed Cydia AND Icy during jailbreak so Cydia wasn't functioning properly. I was told the only way to fix this was to redo jailbreak and not install Icy. Tried to do this myself and have only regressed for the past 2 days. iPhone needs to work with T mobile SIM, and have only been successful doing so once, only to completely botch this after updating 3.0 software through itunes (did this to restore form backup). now pwnage wont browse the correct bundle, restoring to custom firmware wont work due to "error 1600." This is a complete mess. I have been researching for 2 days trying different procedures, and now im afraid I've taken steps backwards. Can this be fixed. Step by step would be so helpful