Apple iOS 15.1.1 shut down the authentication channel

IT House December 21 news, according to 9to5 Mac reported that following the release of the official version of iOS 15.2 to all users last week, Apple today stopped the signing verification of iOS 15.1.1 for iPhone 13 series models and iOS 15.1 for older iPhones. This means that users who update their devices to iOS 15.2 can no longer downgrade to iOS 15.1.1 or iOS 15.1.

In mid-December, iOS 15.2 and iPadOS 15.2 added the Apple Music Voice Solution, a new first-level subscription service for accessing music using Siri. The update also includes the App Privacy Report, the Digital Legacy program, and other features and bug fixes for iPhones and iPads.

Back in November, Apple had stopped signing up for iOS 15.1 for iPhone 13 models because the devices had received the iOS 15.1.1 update to fix a specific bug affecting this year's iPhone. Now with the introduction of iOS 15.2, iOS 15.1 and iOS 15.1.1 are no longer signed for verification for any iPhone and iPad models.

IT House learned that iOS 15.1 released some new features to all users at the end of October, including the COVID-19 vaccination certificate in the wallet app, FaceTime's SharePlay, and the ProRes mode for iPhone 13 Pro users. This update also brings an option to manually disable macro mode on the iPhone 13 Pro and iPhone 13 Pro Max.

Revert to an earlier version of iOS and is often used by jailbroken iPhone users. Restoring your iPhone or iPad to a previous iOS version can sometimes be helpful for users who encounter major bugs after upgrading to the latest version of iOS.

If you're having any serious problems with iOS 15.2, unfortunately you'll now have to wait until future updates instead of downgrading to iOS 15.1.1 or iOS 15.1. Users currently running iOS 15.3 Beta can no longer downgrade to iOS 15.1.1 or iOS 15.1.