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290 posts

Ultimate Geek
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Topic # 175474 1-Jul-2015 09:13
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HI There,

I have a iphone 4s that can be accessed by itunes but error 21 stops me from reseting the device, is there any third party software that can reflash the device?

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19 posts

Geek
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  Reply # 1353660 28-Jul-2015 18:54
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Hard reset and update the ios.

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835 posts

Ultimate Geek
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  Reply # 1353667 28-Jul-2015 19:02
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Are you using iTunes on Windows or Mac? Have you tried using a different computer?
Is your internet connection working OK?

Make sure you have the most recent version of iTunes and that the date and time is set correctly on your computer


 
 
 
 


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Uber Geek
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  Reply # 1353668 28-Jul-2015 19:02
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Do a DFU Restore.  Plenty of resources online with instructions.  

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