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Getting error 21 when restoring iPhone

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Member Since: Oct 16, 2010
Posts: 38
andresr is on a distinguished road
Mac Specs: MBP 2.26ghz 4GB, iPod nano 1st & 3rd gen., iPod touch 2nd gen.

andresr is offline
Does anyone know of a way to fix this? I am trying to update/restore my iPhone and it keeps giving me an error 21 which I looked on apple's website and says its a security system issue or something along those lines? If you can help me, that would be very appreciated!

I am currently running 4.3.1 (I've heard apple stopped signing this?)
because I just never really updated to 4.3.2 so I hope thats not the issue.
iPhone for AT&T. hmm if you need any more info to help me, request it and I will gladly be willing to give it unless its personal. Thanks!
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