Apple has ceased signing iOS 18.6.2 and iPadOS 18.6.2, preventing users who upgraded to iOS 26 from downgrading. This is a standard Apple practice to encourage users to utilize the latest, most secure software versions. While users aren't forced to update, downgrading is no longer possible after updating to the newer iOS version. Apple also stopped signing tvOS 18.6. This measure enhances overall system security.

Prepared by Jonathan Pierce and reviewed by editorial team.