After the release of iOS 16.1 on October 24, Apple stopped signing iOS 16.0.3, the previously available version of iOS launched on October 10. Since iOS 16.0.3 is no longer signed, it is no longer possible to downgrade this version of iOS after installing iOS 16.1.


Apple routinely stops signing older versions of software updates after new versions come out in order to encourage customers to update their operating systems, so it’s not unusual for iOS 16.0.3 not to be signed.

iOS 16.0.3 was a smaller bug fixing update that addresses bugs that plagued the iPhone 14 and iPhone 14 Pro models.

The iOS 16.1 update it replaced is much bigger in size, introducing the shared iCloud Photo Library, lock screen live activities and dynamic island, support for the Matter smart home standard, clean power charging, and more, with details available in our iOS 16.1 guide .

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