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 has added a new "iPhone Handoff" feature to iOS 27 that will allow you to switch between two iPhones while using the same phone number on each device.
This functionality was briefly mentioned during the WWDC 2026 keynote in June, on a slide that listed hundreds of new features coming in iOS 27 and corresponding software updates, but Apple never shared any further details at the time.
...
Less than a week before Apple debuts new iPhone 18 Pro models, research firm TrendForce has estimated the prices of the devices based on the latest hardware cost environment.
TrendForce's price estimates compared to last year's models look like this:
Model
Starting Price
Model
Starting Price
Change
iPhone 17 Pro
$1,099
iPhone 18 Pro
$...
Ahead of Apple's event on Wednesday, September 9, where it is expected to unveil its first-ever foldable iPhone, Taiwanese research firm TrendForce today outlined the device's estimated price range, features, and some other key details.
In the U.S., TrendForce estimated that the foldable iPhone will have a starting price of $2,099 to $2,299 and said the highest-end configurations could...
