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I'm using iTunes on Windows 10 to try to update my iPhone 7 to iOS 14.1 (from 14.0.1) After the extraction of the update software on the Windows PC occurs, and the backup of my iPhone 7 completes, I get the following iTunes error:
The iPhone "xxxxxx iPhone 7" could not be updated. An unknown error occurred (4000).
iPhone 7, iOS 14
Hi f1fan44,
It sounds like there is an issue when trying to update your iPhone. If that is the case, check out the steps in the following resource.
If you see an error when you update or restore your iPhone, iPad, or iPod
These steps should help get your iPhone updated.
Let us know if that works.
Take care.
what does unknown error occurred (4000) mean when updating to iOS 14.1 using iTunes on Windows 10?
