Apple Stops Signing iOS 18.4.1

MacRumors
By Juli CloverMay 19, 2025, 7:25 pm343 pts
Apple today stopped signing iOS 18.4.1, a week after releasing the iOS 18.5 update. Because iOS 18.4.1 is no longer being signed, iPhone users who upgraded to iOS 18.5 are no longer able to downgrade to the previous version of iOS. "Signing" is a server-side verification check that Apple does when iOS is…

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