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Apple blocks downgrades from iOS 27 to iOS 26

Apple has stopped signing iOS 26.6.2, making it impossible for iPhone users who have upgraded to iOS 27 to revert to any version of iOS 26. Both sources confirm that iOS 26.7, released alongside iOS 27, cannot be installed as a downgrade, as there is no official restore file available. Users still on iOS 26 can update over the air, but downgrading from iOS 27 is now blocked.

Why it mattersThis change prevents users from switching back to earlier software, limiting options for those who encounter issues with iOS 27. Apple's move also aims to keep devices more secure by closing known vulnerabilities in older versions.

Sources covering this

MacRumorsYou Can No Longer Downgrade From iOS 27 to iOS 2610:25 PM9to5MaciPhone users running iOS 27 can no longer downgrade to iOS 2611:12 PM

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