I bought a 3g 16gb off ebay with a broken digitizer. I fixed it and im planning on restoring it to 4.2.1 and unlocking it. I plugged it in for the first time. It showed the apple logo and a spinning star at the bottom right above the home button. I dont know what its at the bottom. Ive never seen that before. I click to restore. Load a official 4.2.1 firmware and every time I get the 1604 error. It will still be stuck at the apple logo like it frozen. Its still on even if I unplug it. I have spent countless hours researching a solution to this and Im forced to put it on a forum. Maybe someone will have a solution. I have pasted the log on the link. Please someone help me!

http://pastebin.com/raw.php?i=ecBkZtyz

Have you tried to pwn then restore either original or custom IPSW? or use iREB??

Originally Posted by Olethros

Have you tried to pwn then restore either original or custom IPSW? or use iREB??

Yes I have tried pwn then both orginial and custom IPSW. I have also used iREB. I have tried this on three different windows computers (windows xp and 7). Still getting the same error.

I was messing around with it some more. I forgot to mention that it wont even show what firmware version it has. I have even checked with f0rcast and tiny-umbrella. It dosent show anything about the iPhone except for the ECID (Dec) on tiny-umbrella. So I figured maybe im not restoring with the right firmware. This thing could have 6.15.00 baseband for all I know. So tried 4.1 official and I got a new error message of 1603. I don't know the difference between 1603 and 1604, but I did some researching on google and I reset the Apple Mobile Device service. Still stuck at "preparing iPhone for restore", Error 1603. I have uploaded a new log file of the error 1603.

http://pastebin.com/raw.php?i=tMMUkE6d