Apple Stops Signing iOS 13.5.1 Following Release of iOS 13.6
Following the release of iOS 13.6 on July 15, Apple has stopped signing iOS 13.5.1, which means downgrading to that version of iOS is no longer possible.

iOS 13.5.1 was a security update that was released to address the vulnerability that allowed for the unc0ver jailbreaking tool that worked with many recent versions of iOS, including iOS 13.5.
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.
iOS 13.6, which introduced Car Keys, Apple News audio stories, and more, is the only current publicly available version of iOS that can be installed on iPhones and iPads. Apple has also seeded betas of upcoming iOS and iPadOS 14 updates to developers and public beta testers.
Popular Stories
Apple's long-rumored smart home hub will have an iMac G4-style design and a host of unique features, Bloomberg's Mark Gurman reports.
The smart home hub is said to feature a square 6-inch display, with variants that can be placed on a countertop or mounted on a wall. It features a single FaceTime camera on the front, with microphones and speakers in its connected base. Gurman described the...
Apple plans to introduce a series of new smart home products on Tuesday, October 13, according to Bloomberg's Mark Gurman.
Apple reportedly plans to debut its long-awaited smart home hub device, a new HomePod mini, and a new Apple TV on the date. The new HomePod mini and Apple TV are set to retain their existing designs, but tout faster chips to support Siri AI. The new HomePod mini will...
MacRumors contributor Aaron Perris has uncovered an image file from Apple for an unreleased Apple TV 4K, suggesting that a new model will finally be released soon. The image is specifically for an "Apple TV 4K (4th generation)" model.
Apple TV 4K (4th generation) image (on a gradient)
The image reveals that the Apple TV will have the same external design as the current model, with all of its...