iPhone XR: iOS 18.7.7 re-prompt, "Verification Failed

iPhone XR, updated to 18.7.7 after March 25, but now Settings say 18.7.7 is available again. Attempting to install results in "Verification Failed". It appears that enabling IOS 18.7.7 for more phones actually encompasses enabling it for phones that already have the update resulting in the user being prompted to reinstall 18.7.7 again. Is the "Verification Failed" outcome the result of Apple having pulled the update for those phones and the update just not having disappeared yet?

iPhone XR, iOS 18

Posted on Apr 1, 2026 5:11 PM

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Question marked as Top-ranking reply

Posted on Apr 3, 2026 1:21 AM

Tried again 3rd April and Verify now working and installation completed so Apple must have posted a signed update

37 replies

iPhone XR: iOS 18.7.7 re-prompt, "Verification Failed

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