Following the discharge of iOS 16.6 final week, Apple has now stopped signing iOS 16.5.1 and iPadOS 16.5.1. This signifies that iPhone and iPad customers can not downgrade to this model of the working system in the event that they’re already working a more moderen model of iOS.
iOS 16.5.1 is not signed by Apple
iOS 16.5.1 was launched on June 21 with a repair for the Lightning to USB Camera Adapter bug, in addition to two safety patches. One of the vulnerabilities mounted with iOS 16.5.1 allowed the execution of arbitrary code with kernel privileges. The second was a WebKit exploit that allowed maliciously crafted net content material to execute arbitrary code.
Apple has additionally launched further safety patches for iOS 16.5.1 by way of a number of Security Response updates.
As for iOS 16.6, the replace was launched on July 24 with 16 safety fixes. The 16 patched flaws vary throughout classes, together with the kernel, Find My, WebKit, and Apple Neural Engine. Apple says that two of these vulnerabilities had been seemingly being actively exploited.
Interestingly, iOS 16.6 is probably going one of many final updates to iOS 16 earlier than the official launch of iOS 17 this fall. That means this might be the final software program replace for gadgets just like the iPhone 8 and iPhone X, which received’t help iOS 17. However, Apple is probably going to offer safety patches for these gadgets for at the least one other yr.
Downgrading is not attainable
Reverting to older iOS builds is a way usually utilized by those that jailbreak their iPhones and iPads. Back in December, the hacker crew palera1n launched the first jailbreak software based mostly on the checkm8 exploit suitable with iOS 15 and iOS 16. The software works with all variations from iOS 15.0 to iOS 16.5.1.
Restoring an Apple gadget to a earlier model of iOS may also generally be useful for customers who expertise important bugs after upgrading to the newest model of iOS.
If your iPhone or iPad is working iOS 17 beta, you’ll be able to nonetheless downgrade to iOS 16.6. However, downgrading to iOS 16.5.1 or older variations is not attainable.
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