I am sorry if this has been covered, because I'm sure it has. However, I can't seem to find out exactly how to fix this so I thought I'd post my specific problem and see if someone could tell me what to do. I bought an unlocked iphone off of ebay a few months back. It is a 2nd gen. When I bought it, it was unlocked for iphone 1.1.4 using ziphone. By the time I got it, 2.0 was out so I upgraded to 2.0 using Pwnage. Everything worked great. I then waited until 2.1 came out to decide to fiddle with it. This is where the problem ensued. Before I upgraded it, I downloaded iTunes 8. Then I restored my iphone software to 2.1 using itunes. I then created a Pwnage ipsw file for 2.1, put it in DFU and tried to restore. However, it came up with an error message. It has said every error from 6 to 1603 to 1604 to 1 etc etc. At this point it is stuck saying itunes can't activate my sim, yadda yadda yadda. So, then I tried to activate my SIM using the method of putting the #*33....etc method into the emergency keypad. That made it so now my phone company shows up at the top left hand corner with the signal bars and I can call out using the emergency keypad, but I can't access the main phone. Then, I tried using Ziphone and iLiberty+ to try to unlock my phone instead of pwnage. They turn the phone into recovery mode, but both programs get stuck there and never get past that step. I've tried using different usb ports and cables. I've restarted my computer and all three programs many times and restored many times. That is where I'm currently at. Can someone explain to me what I can do to fix this error? Would using a different computer help? I have been without my iphone for a week, and would greatly appreciate any help that could be offered. And I'm sorry if this is something obvious that I shouldn't be posting about because it's already been covered. THANKS!