Apple has officially discontinued the issuance of certificates for all versions of iOS 16, as reported by MacRumors.
The Importance of iOS Certificates
When attempting to install any version of iOS, a crucial step involves the device checking the firmware certificate on Apple’s server. Without this verification, the installation process cannot proceed. If the server approves, the chosen iOS version is installed.
No Going Back to iOS 16
Following the release of iOS 17.0.3, Apple has ceased issuing certificates for all versions of iOS 16, including iOS 16.6.1. This means that even if you find iOS 17 unsatisfactory in terms of speed or battery life, reverting to iOS 16 is no longer an option.
Swift End to Rollback Option
Apple has acted swiftly this time, closing the rollback option within a mere three weeks, notes NIX Solutions. In contrast, during 2021 and 2022, users had approximately 1.5-2 months to return to the previous iOS version if they wished to do so.