Earlier today, Apple suddenly closed the authentication channel for iOS 15.6 RC.This means that the last version of iOS 15 has also been closed for signing.
That is to say,IPhone users will no longer be able to return to the iOS 15 system through downgrade.
It is reported that the iOS 15.6 RC, a system update released by Apple in July 2022, is the rare version of iOS that has not closed the authentication channel for more than half a year.
And this featureAlso let it take on a lot of users in trying iOS 16:00 & ldquo; backtrack & rdquo;.
It is worth mentioning that Apple is expected to release the latest iOS 17 on WWDC23 in June, and iOS 16.5 is already under internal testing.
The gradual iteration of the new system may also be one of the reasons why Apple chose to close the verification channel of the old system.
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