Following the release of iOS 15.0.1 on October 1, Apple has stopped signing iOS 15.0, the previously available version of iOS, which saw a public release on September 20th. Since iOS 15.0 is no longer signed, it is not possible to downgrade to that version if you have already updated to iOS 15.0.1.

iOS 15 General function blue
Apple also stopped signing iOS 14.8 last week, meaning iOS 15.0.1 is the only publicly available version of iOS at the moment, and those who have upgraded to iOS 15 cannot downgrade to iOS 14.

Apple routinely stops signing older versions of software updates after new releases to encourage customers to keep their operating systems up to date.

iOS 15.0 marks a major version update that introduces Focus Mode, Live Text, on-device Siri, iCloud +, Safari changes and many more, with details available in our iOS 15 roundup.

iOS 15.0.1 introduced a bug fix that prevented an approved Apple Watch from being used to unlock an iPhone 13 model while wearing a face mask. It also addressed a bug that could cause the Settings app to incorrectly display a full storage warning, and it fixed an error with Fitness + subscribers audio meditations.

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Apple stops signing iOS 14.7 after iOS 14.7.1 release

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Apple stops signing iOS 14.5 after fixing iOS 14.5.1 Release

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Although iOS 15 is coming soon, it looks like Apple is working on an iOS 14.8 update

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Apple releases iOS 15.0.1 with fix for Apple Watch bug unlock on iPhone 13 models

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iOS 15 suffers from several bugs as adoption rises to almost 20%

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