Apple stop iOS 15.4.1, iPhone users cannot be downgraded after upgrading to the iOS 15.5

After releasing the official version of iOS 15.5 last week, Apple today stopped the verification of iOS 15.4.1. This means that users who updated to iOS 15.5 can no longer downgrade to iOS 15.4.1.

iOS 15.5 includes enhancements for Apple Podcasts and other features and bug fixes, as well as a baseband upgrade to 1.61.00 to improve iPhone signal performance.

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Apple usually stops the verification of older versions of iOS within a few weeks after pushing the official version update. For some users who have updated to the latest iOS system, when they encounter major bugs, the downgrade method can sometimes be very effective.

That’s why Apple waits a while before closing the authentication channel for older versions of iOS. The previously released iOS 15.4.1 fixes the problem that the iOS 15.4 battery drains too quickly.

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