Apple is no longer signing iOS 17.1 forcing users to stay on iOS 17.1.1 and preventing further downgrades.
Apple stops signing iOS 17.0.3 preventing downgrades from iOS 17.1.
Following release of iOS 17.0.3 Apple stopped signing iOS 16.6.1 preventing future downgrades. The only previous release which is currently being signed is 17.0.2 (but developers should expect that this is not for long).
Downgrade from iOS 16.6.1 is no longer possible as Apple stopped signing iOS 16.6.
Following release of iOS 16.6 Apple no longer signs iOS 16.5.1 preventing downgrades.
Following the iOS 16.5.1 update Apple now stops signing iOS 16.5 preventing downgrades.
iOS 16.5.1 closes major security issues and therefore, it is expected that Apple will stop allowing users to downgrade to vulnerable releases.
Apple notifies developers on upcoming changes in purchase receipt signing certificate. Developers who use custom receipt validation should update their software accordingly.
If your app validates App Store receipts on device, make sure your app will support the SHA-256 version of this certificate. New apps and app updates that don’t support the SHA-256 version of this certificate will no longer be accepted by the App Store starting August 14, 2023.Apple Developer
Apple also notifies developers that they should migrate to Xcode 14 or
notarytool utility by November 1, 2023. Submissions from Xcode 13 and
altool utilities will be no longer accepted then.
- June 20, 2023. Receipts in the sandbox environment will be signed with the SHA‑256 version of this certificate for devices running a minimum of iOS 16.6, iPadOS 16.6, tvOS 16.6, watchOS 9.6, or macOS Ventura 13.5.
- August 14, 2023. Receipts in new apps and app updates submitted to the App Store, as well as all apps in sandbox, will be signed with the SHA‑256 intermediate certificate.
- November 1, 2023. Notarization requests will be only accepted by Xcode 14 and newer or
Apple stops signing iOS and iPadOS 16.4.1 preventing downgrades.
After 16.4.1 release Apple no longer allows downgrade to iOS 16.4.
Following recent updates Apple now no longer signs iOS/iPadOS 16.3.1.