Apple Stops Signing iOS 13.5.1 Following Release of iOS 13.6 - MacRumorsOpen MenuShow RoundupsShow Forums menuVisit ForumsOpen Sidebar
Skip to Content

Apple Stops Signing iOS 13.5.1 Following Release of iOS 13.6

by

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
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

Aston Martin CarPlay Ultra Screen

Apple Says CarPlay Ultra is Coming to These Vehicle Brands

Thursday May 21, 2026 11:53 am PDT by
Last year, Apple launched CarPlay Ultra, the long-awaited next-generation version of its CarPlay software system for vehicles. Nearly a year later, CarPlay Ultra is still limited to Aston Martin's latest luxury vehicles, but that should change fairly soon. In May 2025, Apple said many other vehicle brands planned to offer CarPlay Ultra, including Hyundai, Kia, and Genesis. CarPlay Ultra...
Read Full Article
iphone 18 pro blue%402x

iPhone 18 Pro: Dark Cherry, Light Blue, and Dark Gray Chassis Leaked [Update]

Thursday June 4, 2026 5:18 am PDT by
Update: Since publication, new information has come to light suggesting the images have been AI-manipulated and are not in fact iPhone 18 Pro chassis parts. The original article follows. The color options Apple is reportedly planning for the upcoming iPhone 18 Pro and ‌iPhone 18 Pro‌ Max have appeared online today in the form of images of chassis parts of unknown authenticity....
Read Full Article • 74 comments
iOS 27 All the New App Features

iOS 27: All the Rumored App Features

Wednesday June 3, 2026 3:48 pm PDT by
Siri is getting a major overhaul in iOS 27, but Apple also has some big updates planned for apps like Camera, Photos, and Wallet. There are multiple new AI features in the works, plus some non-AI upgrades. Camera Apple is moving Visual Intelligence from the Camera Control button to the Camera app in iOS 27, according to Bloomberg. There will be a Siri mode that will be available alongside...
Read Full Article • 44 comments

Top Rated Comments

BaltimoreMediaBlog Avatar
BaltimoreMediaBlog
77 months ago
This is the one Apple practice that I most despise. This is what cost me 50+ 32 bit games apps that I then had to purchase all over again mostly or just forget them as some were never updated. I think this practice should be illegal in fact.

I had a battery replacement also that Apple made me pay for, but then shipped the phone back to me with an updated IOS that ruined 50+ apps.

This is just a horrible practice on so many levels.
Score: 9 Votes (Like | Disagree)
Westside guy Avatar
Westside guy
77 months ago

Who wish to go back to 13.5.1? I would have liked not to have ever updated: it ruined my iPad that was replaced by Apple being at the end of the 1st year of life
I'd like to go back to 10.3.3, personally. 😁
Score: 6 Votes (Like | Disagree)
Apple_Robert Avatar
Apple_Robert
77 months ago

This is the one Apple practice that I most despise. This is what cost me 50+ 32 bit games apps that I then had to purchase all over again mostly or just forget them as some were never updated. I think this practice should be illegal in fact.

I had a battery replacement also that Apple made me pay for, but then shipped the phone back to me with an updated IOS that ruined 50+ apps.

This is just a horrible practice on so many levels.
Apple is trying to look out for people who don’t install updates that are often security based. If Apple didn’t do this kind of thing and numerous people got exploited, there would be a class action suit filed quicker than I can finish typing this post.

Apple is being pro active. And for many people, Apple is a bit too extreme.
Score: 3 Votes (Like | Disagree)
PickUrPoison Avatar
PickUrPoison
77 months ago

Almost 400? You’re kidding right?
Nope. And my 6s handles them beautifully 🙂 iOS 13.6, not so much.




PS I have managed to pare it down a little over the last couple weeks...

https://forums.macrumors.com/threads/google-to-dramatically-improve-chrome-impact-on-mac-battery-life.2245544/post-28668481

Attachment Image
Score: 2 Votes (Like | Disagree)
PickUrPoison Avatar
PickUrPoison
77 months ago

Fastest I have ever in my life hit 'Update'. 13.5.1 was a turd supreme. Don't even care what regressed.
I’m having more problems with 13.6 than I ever had with 13.5.1. News just sits there and spins before the “For You” section.

But my big issue is that the order of my Safari tabs keep shifting around—very frustrating because they’re mapped in my head and I expect to see tabs in a certain order. Even after I move them back to where they’re “supposed” to be, they won’t stay that way. They move back to within a few tabs of where they were before I moved them 🤬

As someone who has almost 400 open tabs, yeah, I’m frustrated. It’s screwing with my my finely honed system 😂
Score: 2 Votes (Like | Disagree)
derbothaus Avatar
derbothaus
77 months ago
Fastest I have ever in my life hit 'Update'. 13.5.1 was a turd supreme. Don't even care what regressed.
Score: 2 Votes (Like | Disagree)
Read All Comments