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Q: 21 is due to hardware error, then how

i got iphone 4s 16 gb i try to restore the software it gives me an error code 21 so i don't know what's a problem.

hardware do what they must do first? Please help me show Thanks Photos

Posted on Sep 9, 2016 3:27 AM

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Q: 21 is due to hardware error, then how

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