iPhone users no longer able to downgrade to iOS 26.4

Following the recent release of iOS 26.4.1, Apple has now ceased signing iOS 26.4. This development has implications for users.

Apple no longer signing iOS 26.4 installs

As reported by MacRumors, Apple has officially stopped signing iOS 26.4, which means that reverting from iOS 26.4.1 to the previous version is no longer possible.

Apple typically stops signing older iOS versions for either stability reasons or to address major security vulnerabilities present in earlier releases.

The recent iOS 26.4.1 update was primarily focused on bug fixes for iPhones, with no specific security vulnerabilities identified in the release notes.

Users who updated to iOS 26.4.1 noticed improvements related to iCloud syncing but further details about the update remain limited.

If you were considering downgrading from iOS 26.4.1 to iOS 26.4, unfortunately, that option is no longer available.

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