Following the release of iOS 15.2 last week, Apple has stopped signing iOS 15.1.1 and iOS 15.1/iPadOS 15.1 for all compatible iPhones and iPads. This means it is no longer possible to downgrade your iPhone or iPad back to iOS 15.1/iOS 15.1.1 from iOS 15.2.
The company has also already released the first iOS 15.3 beta to developers and public beta testers, but it does not contain any new changes.
While Apple previously continued signing an older iOS build for at least a couple of weeks after release, it has reduced the signing window to just one week now.
Since no jailbreaks currently exist for any version of iOS and iPadOS 15, today’s news isn’t all that frustrating for avid jailbreakers-to-be. On the other hand, those hoping to jailbreak iOS or iPadOS 15 are strongly advised to stay on the lowest possible firmware to enhance their odds of being able to jailbreak in the future.
As always, you can monitor which version(s) of iOS or iPadOS are being signed for your device(s) on the handy IPSW.me website.