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270 posts

Ultimate Geek
+1 received by user: 16


Topic # 175474 1-Jul-2015 09:13 Send private message

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
Inactive user


  Reply # 1353660 28-Jul-2015 18:54 Send private message

Hard reset and update the ios.

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818 posts

Ultimate Geek
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  Reply # 1353667 28-Jul-2015 19:02 Send private message

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


3853 posts

Uber Geek
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  Reply # 1353668 28-Jul-2015 19:02 Send private message

Do a DFU Restore.  Plenty of resources online with instructions.  

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