Following the iOS 16.5.1 update Apple now stops signing iOS 16.5 preventing downgrades.

iOS 16.5.1 closes major security issues and therefore, it is expected that Apple will stop allowing users to downgrade to vulnerable releases.

Reference: Apple stops signing iOS 16.5, blocks downgrade from iOS 16.5.1

Recommendations

Developer:

Prevent devices from updating if iOS 16.5 is required for development.

QA engineer:

Prevent devices from updating if iOS 16.5 is required for testing.

PM/DM:

Business as usual.

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