Following the release of iOS 16.6 last week, Apple has now stopped signing iOS 16.5.1 and iPadOS 16.5.1. This means that iPhone and iPad users can no longer downgrade to this version of the operating system if they’re already running a newer version of iOS.
iOS 16.5.1 is no longer signed by Apple
iOS 16.5.1 was released on June 21 with a fix for the Lightning to USB Camera Adapter bug, as well as two security patches. One of the vulnerabilities fixed with iOS 16.5.1 allowed the execution of arbitrary code with kernel privileges. The second was a WebKit exploit that allowed maliciously crafted web content to execute arbitrary code.
