Apple Stops Signing iOS 15.6 Following iOS 15.6.1 Release, Downgrading No Longer Possible
Following the launch of iOS 15.6.1 last Wednesday, Apple has stopped signing iOS 15.6, the previously available version that came out in mid-July. Since iOS 15.6 is no longer being signed, it is not possible to downgrade to that version of iOS after installing iOS 15.6.1.

Apple routinely stops signing older versions of software updates after new releases come out in order to encourage customers to keep their operating systems up to date, so it is not unusual that iOS 15.6 is no longer being signed.
iOS 15.6 was minor in scale, introducing an option to restart, pause, rewind, and fast-forward a live sports game that's in progress, plus it addressed an issue that could cause the Settings app to continue to display that device storage is full even when it's not.
Released on August 17, iOS 15.6.1 had no new feature additions, but it does include a critical security fix that addresses kernel and Webkit vulnerability that could lead to arbitrary code execution.
Popular Stories
Apple today released a new Pride Edition Sport Loop for the Apple Watch. The band features a rainbow design with 11 colors of woven nylon yarns.
The new Pride Edition Sport Loop is available to order now on Apple.com and in the Apple Store app in 40mm, 42mm, and 46mm sizes, and it will be available at Apple Store locations starting later this week. In the U.S., the band costs $49.
There...
Apple is expected to unveil iOS 27 during its WWDC 2026 keynote on June 8, and there are already many rumored features and changes for iPhones.
The first developer beta of iOS 27 will likely be available immediately following the keynote, and a public beta typically follows in July. Following beta testing, the software update should be released to all users with a compatible iPhone in...
iOS 26.5 is expected to be released next week, following more than a month of beta testing. The update is relatively minor, but there are a couple of new features and changes across the operating system that we have recapped below.
iOS 26.5 lays the groundwork for end-to-end encryption for RCS in the Messages app and ads in the Apple Maps app, and it will include a new Pride wallpaper and a...