ios 9.3.1 has 'broken' my iphone 5s

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Level 1

4 points

ios 9.3.1 has 'broken' my iphone 5s

Actually my sons phone (it loaded without problems on my 6plus) - the install failed during on phone installation and was stuck at the Apple Logo (Looping almost).

I put the phone into DFU mode and connected to iTunes on the PC and;

tried to Update - this failed with an error 21 (*means many things but implies that the IPSW file is wrong)
tried to restore - this just failed
turned off Findmyphone and repeated the above - error 21 has now gone but there is still no success
Downloaded several IPSW files and repeated the above (all in DFU mode) still no luck

Does anyone know:-

What the solution to this is, or
where I can get accredited IPSW files?

Any help gratefully received

DadTheTooth

iPhone 5s, iOS 9.3.1, Stuck in installation

Posted on Apr 4, 2016 12:34 AM

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Answer 1

thunderzzz

Level 6

8,468 points

Apr 4, 2016 12:37 AM in response to DadTheTooth

Take a look at these articles:

Resolve iOS update and restore errors in iTunes - Apple Support

Get help with iOS update and restore errors - Apple Support

Error 21 refers to hardware issue. From original support article:

Errors: 1, 3, 11, 12, 13, 14, 16, 20, 21, 23, 26, 27, 28, 29, 34, 35, 36, 37, 40, 56, 1002, 1004, 1011, 1012, 1014, 1667, and 1669.

Your iPhone, iPad, or iPod touch or computer might have a hardware issue that stops the update or restore from completing.

Check that your security software and settings aren't blocking your device from communicating with the Apple update server.
Try to restore your iPhone, iPad, or iPod two more times while connected with a cable, computer, and network you know are good.
Make sure that your security software and settings are allowing communication between your iPhone, iPad, or iPod touch and update servers.
If you still see the error message when you update or restore, contact Apple support.

If you still see the error message, check for outdated or modified software.

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