Apple has stopped signing iOS 15.2 and iPadOS 15.2, just after iOS 15.2.1 was released last week. This means that iPhone, iPad, and iPod touch users can not downgrade from iOS 15.2.1 anymore.
Usually, users who find issues with new software updates look to downgrade their iOS version when any app or functionality stops working as expected. There are also those users who like to jailbreak their devices and downgrade if their jailbreak tool only supports an older version of iOS.
iOS 15.2 is no longer signed by Apple
From Apple’s perspective, when it stops signing iOS versions, it forces people to stay on the latest iOS update. Not only does it ensure that most users are on the same iOS version and reduce fragmentation, but it also means that all users are forced to get the same security updates and patches.
Apple had previously intended to allow users to stay on iOS 14.x and continue providing security updates. However, the company recently changed course and said that it was a temporary measure. The company had stopped signing the latest iOS 14 update, which meant that users would be forced to upgrade to iOS 15 sooner or later.
iOS 15.2 was a major update and released with new features and changes like Apple Music Voice Plan, App Privacy Report, Communication Safety in Messages, Digital Legacy for Apple ID, Hide My Email for iCloud+, macro photo control for iPhone 13 Pro and iPhone 13 Pro Max, enhancements for the TV app on iPad, redesigned notification summary on the lock screen, and removal of iPhone 13 third-party screen replacement barriers.
In comparison, iOS 15.2.1 was a minor update and contains a security fix for a HomeKit bug that could render iOS devices unusable, alongside a couple of bug fixes for Messages and CarPlay.
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