Apple Ends iOS 18 Downgrades to Focus on Stability

Apple has ceased signing iOS 18, preventing users from reverting to the earlier version after upgrading to iOS 18.0.1.

Apple released iOS 18.0.1 to address numerous bugs present in the initial iOS 18 release.
The iOS 18.0.1 update includes fixes for touchscreen responsiveness, camera freezing, and app crashes.
Users who have upgraded to iOS 18.0.1 can no longer downgrade to iOS 18, as Apple has stopped signing the older version.
Apple's practice of stopping the signing of older iOS versions encourages users to stay updated with the latest security and performance enhancements.
iPhone 15 users and earlier can still downgrade to iOS 17.7, which remains signed by Apple.