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Apr 12, 2001
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Following the launch of iOS 16.6.1 on September 7, Apple has stopped signing iOS 16.6, the previously available version of iOS. Now that iOS 16.6 is no longer being signed, it is not possible to downgrade to that version of iOS after upgrading to iOS 16.6.1.

iOS-16.6-Feature.jpg

Apple routinely stops signing older versions of iOS after new releases come out to encourage customers to keep their operating systems up to date, so it is not unusual that the iOS 16.6 update is no longer being signed.

iOS 16.6.1 is an update that addresses a zero-day security vulnerability that Apple says was actively exploited in the wild. If you have not updated, it is a good idea to do so.

Article Link: Apple Stops Signing iOS 16.6, Downgrading From iOS 16.6.1 No Longer Possible
 
If you want to remain on iOS 16, iOS 16.7 RC is available as OTA only update for A12 Bionic devices and newer... You just need to either install the developer profile or enable developer updates on iOS 16.4 and later...
 
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If you want to remain on iOS 16, iOS 16.7 RC is available as OTA only update for A12 Bionic devices and newer... You just need to either install the developer profile or enable developer updates on iOS 16.4 and later...
There was never an option to not check software updates in iOS, which would be the most ideal choice to stick to a specific version of iOS rather than being forced to upgrade or nagged endlessly until one day you press “yes”.

No, I don’t care “but, but for security” excuse.
 
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