iOS

Apple stops signing iOS 15.1 preventing downgrade from iOS 15.1.1

by Danis TazetdinovDecember 2, 2021December 2, 2021

Apple stops signing iOS 15.1 firmware forcing users to stick with iOS 15.1.1. Downgrades are now no longer possible.

Reference: Apple no longer signing iOS 15.1, blocks downgrade from iOS 15.1.1

Recommendations

Developer:

Keep devices from upgrading, if previous releases are needed.

QA engineer:

Keep devices from upgrading, if previous releases are needed.

PM/DM:

Business as usual.

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