HT201413: Resolve issues between iTunes and third-party security software

Learn about Resolve issues between iTunes and third-party security software
lisafromsittingbourne
Level 1 (0 points)

Q: error 21

what does this mean when I am trying to restore my iphone?

iPhone 4S, iOS 8.4

Posted on Jul 8, 2015 3:16 PM

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lisafromsittingbourne

Q: error 21

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