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User profile for user: LindsayGraham
LindsayGraham Author
User level: Level 1
4 points

Error code 4000 when update attempted

I've tried to update my iPhone 7S to iOS13.7, but this caused 'Cellular Update Failed' and I now have no mobile capability (but I do still have internet access). iPhone now says it is iOS 13.7. I tried Ctrl-'Check for Update' and got error message "iPhone could not be updated. An unknown error occurred (4000)"

Tried the troubleshooting at https://support.apple.com/en-us/HT201210 but same result. And 4000 is not included in the list of error codes.

What can I do to fix the problem?

iPhone 7

Posted on Sep 5, 2020 4:34 AM

Question marked as Top-ranking reply
User profile for user: Androish
Androish
User level: Level 8
39,701 points

Posted on Sep 5, 2020 5:03 AM

This sounds like it might be a hardware issue.


And your phone might be covered under:

iPhone 7 Repair Program for "No Service" Issues - Apple Support


I would advice you to:

Contact Apple for support and service - Apple Support


For your options.


Good luck!

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Error code 4000 when update attempted

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