Reinstall IOS on iPhone 4

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Level 1

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Reinstall IOS on iPhone 4

How do you reinstall the IOS on an old iPhone4 I have tried using the usual methods ie iTunes connected directly to the computer and always get error 21 unable to reinstall.

Posted on Sep 10, 2019 4:20 PM

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Answer 1

Best reply

Ferd II

Level 10

104,281 points

Sep 10, 2019 4:23 PM in response to flavia241

Get help with iOS update and restore errors - Apple Support indicates that your iPhone has a hardware error, which precludes the reinstall.

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Answer 2

deggie

Level 10

167,183 points

Sep 10, 2019 4:23 PM in response to flavia241

That is going to be a problem with your battery and it may be the battery itself, the connect or the power management IC. If you want to spend money on it find a reputable 3rd party repair shop and have them look at it and give you an estimate.

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Reinstall IOS on iPhone 4

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