iOS 26.5 won’t let users downgrade to a prior update any longer

Apple has stopped signing iOS 26.4.2, blocking iPhone users from downgrading after updating to iOS 26.5.

That means anyone who runs into issues with the new release can no longer roll back to the older firmware.

The move is a routine Apple update-policy step, but it removes a key fallback for users.

Attention now shifts to future fixes and to upcoming iOS 27 details likely to emerge around WWDC.