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Why is my iPhone 6s downloading iOS 15.8 but not installing it?

My iPhone 6s can’t install iOS version 15.8 after I downloaded version 15.8. I can download but I can’t install only.

When I click on install button , this occurs verifying update and then unable to install update caption with this letter “an error occurred installing ios15.8.”

what should I do?

pls help me or give me some advice.


[Re-Titled by Moderator]

iPhone 6s, iOS 13

Posted on Nov 19, 2023 1:00 AM

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Question marked as Top-ranking reply

Posted on Feb 9, 2024 4:42 AM

My iPhone 6s can’t install iOS version 15.8.1 after downloaded, anytime I tried it will show error occurred.

36 replies

Why is my iPhone 6s downloading iOS 15.8 but not installing it?

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