Tag: Signing

Apple is no longer signing iOS 17.1 forcing users to stay on iOS 17.1.1 and preventing further downgrades.

Reference: Apple Stops Signing iOS 17.1, Preventing Downgrading

Apple stops signing iOS 17.0.3 preventing downgrades from iOS 17.1.

Reference: Downgrading an iPhone to iOS 17.0.3 is No Longer Possible

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).

Reference: Downgrading an iPhone From iOS 17 to iOS 16 is No Longer Possible

Downgrade from iOS 16.6.1 is no longer possible as Apple stopped signing iOS 16.6.

Reference: Apple Stops Signing iOS 16.6, Downgrading From iOS 16.6.1 No Longer Possible

Following release of iOS 16.6 Apple no longer signs iOS 16.5.1 preventing downgrades.

Reference: Apple stops signing iOS 16.5.1, blocks downgrade from iOS 16.6

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.

Reference: Apple stops signing iOS 16.5, blocks downgrade from iOS 16.5.1

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.

Important dates:

• 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 notarytool.

Apple Developer:

• Upcoming changes to the App Store receipt signing intermediate certificate
• Handling App Store receipt signing certificate change
• Apple notary service update

Apple stops signing iOS and iPadOS 16.4.1 preventing downgrades.

Reference: Apple Stops Signing iOS 16.4.1 to Prevent Downgrading

After 16.4.1 release Apple no longer allows downgrade to iOS 16.4.

Reference: Apple Stops Signing iOS 16.4 Following iOS 16.4.1 Release, Downgrading No Longer Possible

Following recent updates Apple now no longer signs iOS/iPadOS 16.3.1.

Reference: Apple Stops Signing iOS 16.3.1 to Prevent Downgrading