Having a problem with iOS 5

Nov 18, 2011
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#1
I recently purchased a jailbroken iPhone from a friend. I put my AT&T sim card into the phone and it was working perfectly, until I tried to install the iOS 5 software. After downloading it and the installation begin and it seemed like it was finished, it said I had to activate the software. When I tried to activate it, a message appeared and said that I did not have a sim card. Does anybody know what I can do about this?
 
Nov 18, 2011
2
0
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#4
I've tried both of those options. I reset the iPhone by plugging it into the computer, turning it on and holding the power and home button. Then I downloaded two different firmwares, 3.13 and 4.35 and tried to just restore my phone to those, but even that wouldn't work. The error message code I got suggested that it might be because my iTunes was not updated, and after updating it I still couldn't restore my phone