Apple blocks iOS 26.2 downgrade, shuts rollback window for iPhone users after iOS 26.2.1 update

Apple has stopped signing iOS 26.2, officially blocking iPhone users on iOS 26.2.1 from downgrading to the earlier software version.
MacRumors

You Can No Longer Downgrade to iOS 26.1

Apple has stopped signing iOS 26.1, meaning that iPhone users can no longer downgrade to that software version via Finder on macOS or the Apple Devices app on Windows. iOS 26.2 is now the minimum ...