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When you sign up with your Apple Account, you can provide valuable feedback to other community members by upvoting helpful replies and User Tips.
i wanted to update my iphone 12 pro to ios 15.3.1 and got error message 4000 (unknown error. iphone could not be updated).
but on my iphone i see that there is ios 15.3.1 installed.
what shall i do?
or shall i ignor error 4000?
thank you lafeef
your answer to use wifi solved the problem and i coud update my iphone. 👍🏻
error 4000
