Bought used jailbroken 3GS, won't activate after restore
Just bought a used 3GS that was jailbroken by the seller. We tested the SIM card in the phone and the AT&T network showed right up no problem. We didn't care to have it jailbroke, so I brought it home and did a restore on the phone. The phone rebooted and behaved like a new phone. Asking language, location, WiFi network, etc. I noticed that during this process the top showed that it was searching for the phone network.... it stayed in that mode. I went to the activation screen and it sits there forever and then comes back with a message saying the activation server is unavailable.
So... I connected this to iTunes to activate.... and iTunes says that the SIM card is not in the phone (it is).....
Anyone have this problem? And better yet... a solution
iPhone 3GS, iOS 5.1.1