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Apple Stops Signing iOS 15.3 Following iOS 15.3.1 Release, Downgrading No Longer Possible

Following the release of iOS 15.3.1 (https://www.macrumors.com/2022/02/10/apple-releases-ios-15-3-1/) on February 10, Apple has stopped signing iOS 15.3, the previously available version of iOS that came out in late January (https://www.macrumors.com/2022/01/26/apple-releases-ios-15-3/). Because iOS 15.3 is no longer being signed, it is not possible to downgrade to that version of iOS if you've updated to iOS 15.3.1.





(https://images.macrumors.com/article-new/2022/01/ios-15.3-feature.jpg)


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





iOS 15.3 was a bug fix update that addressed a significant Safari bug that could leak browsing activity, while iOS 15.3.1 was another bug fix update further addressing (https://www.macrumors.com/2022/02/10/apple-releases-ios-15-3-1/) WebKit vulnerabilities.
This article, "Apple Stops Signing iOS 15.3 Following iOS 15.3.1 Release, Downgrading No Longer Possible (https://www.macrumors.com/2022/02/17/apple-stops-signing-ios-15-3/)" first appeared on MacRumors.com (https://www.macrumors.com)

Discuss this article (https://forums.macrumors.com/threads/apple-stops-signing-ios-15-3-following-ios-15-3-1-release-downgrading-no-longer-possible.2335128/) in our forums

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Source: Apple Stops Signing iOS 15.3 Following iOS 15.3.1 Release, Downgrading No Longer Possible (https://www.macrumors.com/2022/02/17/apple-stops-signing-ios-15-3/)