iOS 16.5.1 closes the verification channel, can iOS 16.6 still be downgraded?

Apple released the official version of iOS 16.5.1 on June 21, which fixed the problem of the Lightning interface to USB camera adapter and two security vulnerabilities. One of the vulnerabilities allows the execution of arbitrary code with kernel privileges, and the other is a WebKit vulnerability that allows malicious web content to execute arbitrary code. Apple has also provided additional security patches for iOS 16.5.1 through multiple security response updates.

More than a month later, on July 24, Apple pushed the iOS 16.6 update to everyone. iOS 16.6 fixed 16 security vulnerabilities. These vulnerabilities involved Kernel, Find My, WebKit and Apple Neural Engine, among many other areas. Apple said two of the vulnerabilities may be actively exploited.

Everyone knows that Apple will close the verification channel for the old version of the iOS system after a period of time after the new version of the iOS system is pushed. This can best ensure that the iPhone is using the latest version. iOS system. Because of this, Apple announced today that it has closed the verification channel for iOS/iPadOS 16.5.1, which also means that users who have upgraded to iOS 16.6 and above can no longer downgrade to iOS 16.5.1.

In fact, it doesn’t hurt to turn off the verification channel in iOS 16.5.1. Although the official version of iOS 16.6 does not have major feature updates, it mainly fixes bugs in the kernel, Find My, WebKit and other functions. However, according to feedback from users who have upgraded, the official version of iOS 16.6 has many advantages, including no heat generation, long battery life, and no lag when playing games. Compared with iOS 16.5.1, it is still worth upgrading.

## This year’s new flagship will be released soon, and Apple is now focusing its work on On iOS 17, iOS 16.6 may be the last update of iOS 16 before iOS 17 is officially released this fall, which also means that this may be the last software update for devices such as iPhone 8 and iPhone X that do not support iOS 17.

But you don’t need to worry too much. Apple may provide security patches for these devices for at least another year. For old users, this can be regarded as Apple’s With the final benefit.

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