HT203843: Resolve USB-related alerts in iTunes

Learn about Resolve USB-related alerts in iTunes
fernlewisx

Q: iphone problem

hiya my iphone 4 screen went black recentley and now the apple logo logo has started to flash on and off but when i connect to itunes and restore it i keep having error 21 what am i suppose to do?

Posted on Feb 16, 2014 11:10 AM

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