Apple Stops Signing iOS 16.3.1 to Prevent Downgrading

Following the release of iOS 16.4.1 today, Apple has stopped signing iOS 16.3.1, preventing iPhone users from downgrading to that software version. iOS 16.4, iOS 16.4.1, and the iOS 16.5 beta remain signed at the time of writing.

iOS 16
iOS 16.3.1 was released on February 13 and was a minor update with bug fixes, security improvements, and additional Crash Detection optimizations for iPhone 14 models. Apple routinely stops signing older iOS releases over time in order to prevent users from downgrading to an outdated software version.

iOS 16.4 will likely be unsigned later this month, so iPhone users who wish to downgrade to that version have limited time remaining to do so.

Related Forum: iOS 16

Top Rated Comments

FeliApple Avatar
12 months ago
Apple’s most purposefully harmful (arguably a segment of planned obsolescence) policy ever. I reckon that it will never change, but I will never get tired of saying this.
Score: 13 Votes (Like | Disagree)
Carrotcruncher Avatar
12 months ago
This doesn’t bother me, because every software release lately is a downgrade, so you can downgrade any time you like, no matter what they do ???
Score: 11 Votes (Like | Disagree)
Solomani Avatar
12 months ago

iOS 16.4 will likely be unsigned later this month, so iPhone users who wish to downgrade to that version have limited time remaining to do so.
Why on earth would anyone who has already installed 16.4.1 want to downgrade to 16.4? The main point of 16.4.1 was to patch a jackalope exploit that was still not fixed in 16.4 ?‍♂️?‍♂️
Score: 10 Votes (Like | Disagree)
Paddle1 Avatar
12 months ago

Are they as harmful as they are on iOS though? That’s the important question, in my opinion.
The updates that nerfed the noise cancelling on the AirPods I'd argue were worse. You don't have a choice on whether to install.
Score: 8 Votes (Like | Disagree)
TheGenerous Avatar
12 months ago
When I was younger with no money I didn't care about jailbreaks and hacks. Now that my family and I will suffer immensely if I get malware or Russian ransomware, I rather stick to the latest versions if possible. Imagine your keychain and email in the hands of "the bad people". So, if it's time to upgrade your iPhone or iPad, then so be it
Score: 8 Votes (Like | Disagree)
Evelyn Harthbrooke Avatar
12 months ago

(a) I disagree with the sentiment defending Apple deciding which version of software I can use on my device.
(b) Because I strongly prefer the way they look and work. They both largely do/did what I needed of them the way I wanted them to and whatever newer versions might have brought wasn’t worth the drawbacks. Applications I use continue to work just as they always have, no updates needed, and I can still run the current version of Chromium anyway.
it is absolutely your device, but it isn’t your software. it is apple’s; they own the intellectual property and source code to iOS - therefore they have the ability to say whether or not they will continue signing a specific iOS version or not. you may not agree with it, which is entirely fine, but it is within their rights and abilities to stop signing older versions of iOS if they so choose.

regarding macOS mavericks, absolutely - that is a solid macOS version. however i honestly can’t really agree with your implication that ios 6 was good - for the time it absolutely was. but ios has matured a lot since then, and is a much better mobile operating system now than it was back then.
Score: 5 Votes (Like | Disagree)

Popular Stories

Apple car wheel icon feature yellow

Apple Cancels Electric Car Project

Tuesday February 27, 2024 11:05 am PST by
Apple has canceled all plans to release an autonomous, electric vehicle, reports Bloomberg. Apple has been working on an Apple Car for more than a decade and invested millions of dollars into development before deciding it was not a viable project. Apple's Chief Operating Officer Jeff Williams today told approximately 2,000 employees working on the Apple Car that the project was canceled,...
General Apps Messages

iOS 17.4 to Add This 'Groundbreaking' New Messaging Feature

Friday February 23, 2024 5:05 am PST by
With iOS 17.4, set to arrive in March 2024, Apple is bringing a new cryptographic security feature to iMessage called PQ3. This "groundbreaking" and "state-of-the-art" protocol provides "extensive defenses against even highly sophisticated quantum attacks," according to Apple. Let's break down what that means. Apple's iMessage service already supports end-to-end encryption, but security...
Beyond iPhone 13 Better Blue Face ID Single Camera Hole

Six Reasons to Wait for Next Year's iPhone 17

Thursday February 22, 2024 4:20 am PST by
Apple's iPhone development roadmap runs several years into the future and the company is continually working with suppliers on several successive iPhone models concurrently, which is why we sometimes get rumored feature leaks so far ahead of launch. The iPhone 17 series is no different, and already we have some idea of what to expect from Apple's 2025 smartphone lineup. If you plan to skip...
iOS 17

iOS 17.4 Coming Soon With These New Features for Your iPhone

Monday February 26, 2024 6:08 am PST by
In a press release last month, Apple confirmed that iOS 17.4 will be released in March, and the update includes several new features and changes for the iPhone. Key new features in iOS 17.4 include major App Store changes in the EU, Apple Podcasts transcripts, and an iMessage security upgrade. The update also adds new emoji and includes preparations for the launch of next-generation CarPlay...
iOS 18 Mock iPhone 16 Feature Gray

iOS 18 Rumored to Be Compatible With These iPhone Models

Tuesday February 27, 2024 6:31 am PST by
iOS 18 will be compatible with the iPhone XR, and thereby also the iPhone XS and iPhone XS Max models with the same A12 Bionic chip, according to a post on X today from a private account with a proven track record of sharing build numbers for upcoming iOS updates. The post was spotted by MacRumors contributor Aaron Perris, and it has since been deleted. However, this was likely because the...

Game Developers Describe 'Smell of Death' Around Apple Arcade

Monday February 26, 2024 7:24 am PST by
Some game developers are dissatisfied with Apple Arcade amid concerns about the subscription service's future, a new report claims. Sources speaking to described a "smell of death" around Apple's games subscription service and noted the difference between the company's investment in TV and music, and its interest in games. "At the very top of the company there needs to be a ...