Shulou(Shulou.com)05/31 Report--

Not long ago, Apple briefly opened the downgrade channel for iOS, and although many friends got on the car in time, most of them failed. So will Apple still open the downgrade channel? Now it seems absolutely not, because this morning, Apple closed the authentication channels for iOS 11, 11.2.1 and 11.2.2, and now users can only use the latest version of iOS 11.2.5.

­this means that iPad, iPhone and iPod touch users who have upgraded to iOS 11.2.5 will not be able to downgrade to the previous version of iOS 11, while other users who want to taste fresh iOS 11 will only be able to use this version.

­iOS 11.2.5 was released on January 24, Beijing time. In addition to strengthening functions such as Siri, it also fixed two major loopholes in Meltdown and Spectre that attracted much attention recently, which is believed to be the main reason why Apple closed the authentication channel for other system versions this time, because neither of these vulnerabilities was fixed in the previous version of iOS 11.

­and Apple has always followed this approach, shutting down the old system verification channel after the launch of the new system, in order to encourage users to upgrade to the new version of the system, to ensure that users can run the latest, defect-free software on iPhone, iPad and iPod, and to force users to download and install the latest iOS system also helps to alleviate system version fragmentation and third-party App driver compatibility problems.

­although many users may resent this practice, according to the actual test, iOS 11.2.5 is indeed the most stable version of iOS 11, and users of other models aside, users of iPhone 8, 8 Plus and X should probably upgrade.

In fact, Apple will also launch iOS 11.3 in the spring, which will include much-anticipated battery monitoring and performance management features, as well as ARkit 1.5, medical record import, new Animoji and other functions, which is a big upgrade.

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