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Question: Error code 21 when restoring?

I have a 6 month old iPod touch 4th gen. When I try to restore it using iTunes 10.5.3 on a brand new Mac Book Air 13inch, it comes up with an error code of 21, and leves my iPod in recovery mode. I have been able to get it out. I have tried to Reset it on the device it self, but the little 'spinner' that comes up when you turn off comes up and stays there and does nothing.


Thanks

iPod touch, iOS 5.0.1, And using a mac book mid 2011

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Do you hav another computer to try to help determine if you have an iPod or computer problem?

An appointment at the Genius Bar of an Apple store may be in order.

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Feb 25, 2012 3:33 PM in response to lach572 In response to lach572

Error 20, 21, 34, 37: These errors typically occur when security software interferes with the restore and update process. If you are using a PC, follow this article to resolve this issue.


Above from:

http://support.apple.com/kb/TS3694#error21

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Question marked as Helpful

Feb 25, 2012 3:33 PM in response to lach572 In response to lach572

Error 20, 21, 34, 37: These errors typically occur when security software interferes with the restore and update process. If you are using a PC, follow this article to resolve this issue.


Above from:

http://support.apple.com/kb/TS3694#error21

Feb 25, 2012 3:33 PM

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Feb 26, 2012 2:37 PM in response to lach572 In response to lach572

I also experienced this problem after trying to restore my iPhone to factory settings after using "third party" software.


I restored using another computer then uninstalled / re-installed iTunes on my original computer and restored from the backup on the original.


All is well now!

Feb 26, 2012 2:37 PM

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Question: Error code 21 when restoring?