GoKawiilApple halts signing for iOS 26.6.2, blocking downgrades from iOS 27
Apple has stopped authorizing installs of iOS 26.6.2, meaning iPhone users who already updated to iOS 27 can no longer officially revert to iOS 26. The move closes off the last signed pathway back to iOS 26, even though Apple released iOS 26.7 last week without offering a restore image for iPhones.
GoKawiil's interpretation of the reporting above, not reported fact.
Apple routinely cuts off signing for older iOS builds to push users toward the latest security patches and prevent exploitation of known vulnerabilities in outdated versions. For users who upgraded to iOS 27 but experienced bugs or compatibility issues, this leaves no official way to roll back, forcing them to wait for future fixes rather than reverting.
- Apple stopped signing iOS 26.6.2, ending official downgrades from iOS 27.
- iOS 26.7 lacks a restore image for iPhones, unlike iPadOS 26.7.
- Users on iOS 26 can still update to 26.7, but iOS 27 users are locked out of reverting.
Source: 9to5mac.com — Marcus Mendes, 2026-09-21
Published there as: “iPhone users running iOS 27 can no longer downgrade to iOS 26”
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