Downgrading an iPhone From iOS 17 to iOS 16 is No Longer Possible

Following the release of iOS 17.0.3 earlier today, Apple has stopped signing iOS 16.6.1, iOS 17, and iOS 17.0.1, preventing iPhone users from downgrading to any of those software versions. Apple continues to sign iOS 17.0.2 for now.

ios 16 lock screen feature
Notably, this means that it is no longer possible to downgrade an iPhone from iOS 17 to iOS 16. It is not possible to downgrade to iOS 16.7.

Apple routinely stops signing older iOS releases over time in order to prevent users from downgrading to previous software versions.

iOS 17.1 is expected to be released later this month.

Related Forums: iOS 17, iPadOS 17, iOS 16

Popular Stories

Generic iOS 18

Apple Announces iOS 18.2 Launching Today With These New Features

Wednesday December 11, 2024 5:23 am PST by
Apple has announced that iOS 18.2, iPadOS 18.2, and macOS Sequoia 15.2 will be released today following more than six weeks of beta testing. For the iPhone 15 Pro and iPhone 16 models, the update introduces additional Apple Intelligence features, including Genmoji for creating custom emoji, Image Playground and Image Wand for generating images, and ChatGPT integration for Siri. There is also ...
iphone 17 pro concept render cameras

Major iPhone 17 Pro Redesign Backed by Supply Chain Info, Claims Leaker

Thursday December 12, 2024 4:36 am PST by
Next year's iPhone 17 Pro models will reportedly feature a major redesign, specifically centering around changes to the rear camera module, and now new supply chain information appears to confirm the striking change, according to a Chinese leaker. iPhone 17 Pro concept render Late last month, The Information's Wayne Ma claimed that the rear of the ‌iPhone 17‌ Pro and ‌iPhone 17‌ Pro...
m4 mac mini hands on

Cloud-Based M4 and M4 Pro Mac Mini Models Now Available

Wednesday December 11, 2024 7:34 am PST by
Developers now have access to cloud-based M4 and M4 Pro Mac mini units via MacWeb, a Silicon Valley-based provider of cloud services. The company has launched three configurations of the new Mac mini, powered by Apple's M4 and M4 Pro chips. Developers and IT teams can rent these machines for tasks ranging from basic development to advanced artificial intelligence modeling, providing an...
macOS Sequoia Night Feature

Apple Releases macOS Sequoia 15.2 With New Apple Intelligence Features

Wednesday December 11, 2024 10:02 am PST by
Apple today released macOS Sequoia 15.2, the second update to the macOS Sequoia operating system that was released in September. macOS Sequoia 15.2 comes over a month after the release of macOS Sequoia 15.1. Mac users can download the ‌macOS Sequoia‌ update through the Software Update section of System Settings. macOS Sequoia 15.2 adds Image Playground, an app that lets you create...
macbook air m2 13 inch

macOS Sequoia 15.2 Confirms New M4 MacBook Air Models Are Coming

Wednesday December 11, 2024 10:54 am PST by
Apple today made a mistake with its macOS Sequoia 15.2 update, releasing the software for two Macs that have yet to be launched. There is a software file for "Mac16,12" and "Mac16,13," which are upcoming MacBook Air models. The leaked software references the "MacBook Air (13-inch, M4, 2025)" and the "MacBook Air (15-inch, M4, 2025)," confirming that new M4 MacBook Air models are in...
maxresdefault

Apple Releases iOS 18.2 and iPadOS 18.2 With Genmoji, Image Playground, Siri ChatGPT and More

Wednesday December 11, 2024 10:03 am PST by
Apple today released iOS 18.2 and iPadOS 18.2, the second major updates to the iOS 18 and iPadOS 18 updates that came out in September. The new updates come over a month after Apple released iOS 18.1 and iPadOS 18.1. Subscribe to the MacRumors YouTube channel for more videos. The new software can be downloaded on eligible iPhones and iPads over-the-air by going to Settings > General >...
Generic iOS 18

Apple Seeds Second Release Candidate Versions of iOS 18.2 and More With Genmoji, Image Playground and ChatGPT Integration

Monday December 9, 2024 10:06 am PST by
Apple today seeded the second release candidate versions of upcoming iOS 18.2, iPadOS 18.2, and macOS 15.2 updates to developers and public beta testers for testing purposes, a week after releasing the first RCs. The first iOS 18.2 RC had a build number of 22C150, while the second RC's build number is 22C151. Release candidates represent the final version of beta software that's expected to see a ...

Top Rated Comments

Skyscraperfan Avatar
16 months ago
Users should always have the right to downgrade to the iOS version the iPhone came with. Apple does not have to nanny its users. If they prefer an old version, they should be able to keep it.

At the moment only rich users have the option of downgrading by buying a second iPhone in the first place just to have the option to return to the old version.

"Signing" iOS should only be a security measure to make sure that it really came from Apple, but Apple uses signing to make users keep a new version against their will.
Score: 20 Votes (Like | Disagree)
ebika Avatar
16 months ago
Reading the iOS 17 forum ('https://forums.macrumors.com/forums/ios-17.241/'), it seems like 17 is still a mess. I normally update fairly soon after releases, but I'm waiting for at least 17.1 this time.
Score: 11 Votes (Like | Disagree)
btrach144 Avatar
16 months ago
IDK, iOS 17 is pretty stable. Only real issue was a warm 15 PM but 17.0.3 seems to have solved that today.
Score: 6 Votes (Like | Disagree)
platinumaqua Avatar
16 months ago

Reading the iOS 17 forum ('https://forums.macrumors.com/forums/ios-17.241/'), it seems like 17 is still a mess. I normally update fairly soon after releases, but I'm waiting for at least 17.1 this time.
only the last version of every major release is worth upgrading to if reliability is important
Score: 5 Votes (Like | Disagree)
coolfactor Avatar
16 months ago

Users should always have the right to downgrade to the iOS version the iPhone came with. Apple does not have to nanny its users. If they prefer an old version, they should be able to keep it.

At the moment only rich users have the option of downgrading by buying a second iPhone in the first place just to have the option to return to the old version.

"Signing" iOS should only be a security measure to make sure that it really came from Apple, but Apple uses signing to make users keep a new version against their will.
That's a loaded topic.
[LIST=1]
* User chooses to remain on an older version of the operating system.
* Developers have moved on and only support the latest.
* User has an issue with an app due to an incompatibility between the app and their chosen operating system.

Should Apple or the developer have the burden of providing support because a user is refusing to keep up with the latest?

Users *do* have the choice to keep using a particular operating system by turning off automatic updates and never upgrading, so that argument doesn't hold water. The signing prevents downgrading *after* an upgrade has already taken place — either automatically, or manually. In both cases, the user is responsible for the upgrade happening, not Apple.
Score: 5 Votes (Like | Disagree)
Skyscraperfan Avatar
16 months ago

Users *do* have the choice to keep using a particular operating system by turning off automatic updates and never upgrading, so that argument doesn't hold water. The signing prevents downgrading *after* an upgrade has already taken place — either automatically, or manually. In both cases, the user is responsible for the upgrade happening, not Apple.
The user can't know the downsides of a new OS. He trusts Apple and hopes that there are no major downsides or even bugs. Of course there is a period when the user can test the new OS and still has the chance to downgrade, but what happens if the user discovers a flaw later?

If it is possible not to upgrade at all, why is it than not possible to downgrade later? I do not mean a real downgrade software, which would be complicate to implement, as you would need ways from every version down to every other version the phone technically supports. I was just thinking about reinstalling from a backup while keeping at least the compatible user data.
Score: 5 Votes (Like | Disagree)