Apple on Tuesday stopped signing iOS 15.1, which means that users who updated their devices to iOS 15.1.1 or iOS 15.2 beta can no longer downgrade to iOS 15.1. This comes a month after the company stopped signing the iOS 15.0.2 firmware.

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固定链接 'Apple no longer signing iOS 15.1, blocks downgrade from iOS 15.1.1' 提交: December 1, 2021, 2:50pm CST 由 Filipe Espósito