Apple stops signing iOS 15.4.1 following iOS 15.5 release with security patches
9to5Mac -

Apple on Monday stopped signing iOS 15.4.1, just a week after iOS 15.5 was released to the public. As a result, iPhone and iPad users can no longer downgrade from iOS 15.5 to iOS 15.4.1, which impacts users who jailbreak their devices.


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