Apple Stops Signing iOS 15.3.1 Following iOS 15.4 Release, Downgrading No Longer Possible

Following the release of iOS 15.4 on March 14, Apple has stopped signing iOS 15.3.1, the previously available version of iOS that came out in February. As iOS 15.3.1 is no longer being signed, it is not possible to downgrade to that version of iOS if you've updated to iOS 15.4.

iOS 15
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, so it is not unusual that iOS 15.3.1 is no longer being signed.

iOS 15.3.1 was a bug fix update that addressed WebKit vulnerabilities, while iOS 15.4 was a major update that added new emoji characters, Face ID with a mask support, and tons of other features. Apple has also stopped signing tvOS 15.3.

Top Rated Comments

Black Magic Avatar
20 weeks ago

I'm still on iOS 14, but it looks like I need to upgrade since a policy at work requires I am on iOS 15 in order to use the internal Wi-Fi. I am going to try to hold out for iOS 15.5.1 though.
You holding out for what? You denying yourself great features thinking you are saving yourself from bugs and headaches? You like 2 years behind the curve and you feel like that is something to brag about?
Score: 9 Votes (Like | Disagree)
Y014951 Avatar
20 weeks ago

What features am I missing out on exactly that are so detrimental? I have been doing this every year since iOS 11. At the end of the day, it’s about the apps. iOS is just an OS. Most of what I already need in terms of integration doesn’t require iOS 15.
I honestly don't understand the downvotes. Mr. Dee seems to be a quite active participant in the Macrumors forums so I believe he knows what features he's missing. It's his decision to update his devices (or not) after all...
Score: 7 Votes (Like | Disagree)
Black Magic Avatar
20 weeks ago

What features am I missing out on exactly that are so detrimental? I have been doing this every year since iOS 11. At the end of the day, it’s about the apps. iOS is just an OS. Most of what I already need in terms of integration doesn’t require iOS 15.
Your employer is trying to nudge you into the present. You are obviously missing the point.
Score: 5 Votes (Like | Disagree)
now i see it Avatar
20 weeks ago
and good riddance
Score: 4 Votes (Like | Disagree)
canadianreader Avatar
20 weeks ago
We need the right to downgrade. I hope sideloading will open that door.
Score: 4 Votes (Like | Disagree)
Mr. Dee Avatar
20 weeks ago

Your employer is trying to nudge you into the present. You are obviously missing the point.
The same employer who has Windows 7 clients all over its network?
Score: 3 Votes (Like | Disagree)

Related Stories

iOS 14

Apple Stops Signing iOS 14.4.2 After Releasing iOS 14.5.1 With Fix for Actively Exploited Security Issues

Monday May 3, 2021 1:25 pm PDT by
Following today's release of iOS 14.5.1 and last week's release of iOS 14.5, Apple has stopped signing iOS 14.4.2, the previously available version of iOS 14 released on March 26. With iOS 14.4.2 no longer being signed, it is not possible to downgrade to iOS 14.4.2 from iOS 14.5 or iOS 14.5.1 if you've already updated your iPhone or iPad. Apple routinely stops signing older versions of...
14

Apple Stops Signing iOS 14.7 Following iOS 14.7.1 Release

Monday August 2, 2021 6:42 pm PDT by
Following the release of iOS 14.7.1 last week, Apple has stopped signing iOS 14.7, the previously available version of iOS that was released earlier in July. With iOS 14.7 no longer being signed, it is not possible to downgrade to iOS 14.7 if you've already installed iOS 14.7.1. Apple routinely stops signing older versions of software updates after new releases come out in order to encourage ...
iOS 15 General Feature Blue

iOS 15 Now Installed On Nearly 60% Of Devices, Exactly 80 Days After Launch

Thursday December 9, 2021 8:00 am PST by
iOS 15 is now approaching 60% adoption across all iOS devices, precisely 80 days after it launched to the public following its official reveal in June of 2021, according to third-party website Mixpanel. As of Thursday, third-party data analytics company Mixpanel said that around 58% of all iOS devices are running iOS 15, compared to approximately 36% of devices running iOS 14. Mixpanel had...
iOS 16 mock for article

With WWDC Five Months Away, What Do You Want to See in iOS 16?

Thursday January 6, 2022 1:22 pm PST by
The Worldwide Developers Conference, Apple's annual five-day-long conference to announce updates to its major operating systems, services, and sometimes hardware, is five months away. At this year's conference, we expect Apple to announce iOS 16, iPadOS 16, macOS 13, watchOS 9, and tvOS 16. iOS is Apple's most important operating system as it runs on the iPhone and shares many features with...
14

Apple Stops Signing iOS 14.6 Following iOS 14.7 Release

Monday July 26, 2021 3:00 pm PDT by
Following the release of iOS 14.7 last week, Apple has stopped signing iOS 14.6, the previously available version of iOS that was released in May. With iOS 14.6 no longer being signed, it is not possible to downgrade to iOS 14.6 if you've already installed iOS 14.7 or iOS 14.7.1. Apple routinely stops signing older versions of software updates after new releases come out in order to...
iOS 15

Everything New in iOS 15.4 Beta 2: Face ID Updates, Tap to Pay Code and More

Tuesday February 8, 2022 1:12 pm PST by
Apple today seeded the second betas of iOS 15.4 and iPadOS 15.4 to developers for testing purposes, and while there aren't as many new features as we got in the first betas, there are some notable additions and changes worth highlighting. Tap to Pay on iPhone With the second beta of iOS 15.4, Apple introduced support for the "Tap to Pay on iPhone" feature that is designed to allow...
appleprivacyad cleaned

iOS 15 Patched Security Hole That Potentially Exposed Users' Private Apple ID Information to Third-Party Apps

Thursday January 20, 2022 3:32 am PST by
Apple patched two significant security vulnerabilities when it released iOS 15 that could have potentially exposed users' private Apple ID information and in-app search history to malicious third-party apps and allowed apps to override user Privacy preferences, Apple has revealed in a recent support document update. With most iOS, macOS, tvOS, and watchOS updates, Apple provides a list of...
iOS 15

Apple Seeds Release Candidate Version of iOS 15.4 and iPadOS 15.4 to Developers and Public Beta Testers

Tuesday March 8, 2022 11:19 am PST by
Apple today seeded the release candidate versions of upcoming iOS 15.4 and iPadOS 15.4 updates to developers for testing purposes, with the new software coming one week after Apple seeded the fifth betas of iOS 15.4 and iPadOS 15.4. The RCs represent the final versions of the updates that will be released to the public next week. Developers can download iOS 15.4 and iPadOS 15.4 through the...

Popular Stories

cook sept 2020 event

Gurman: Apple Preparing Pre-Recorded iPhone 14 and Apple Watch Series 8 Event

Sunday August 7, 2022 6:13 am PDT by
Apple has "started to record" its virtual September event, where it's expected to announce the upcoming iPhone 14 lineup, the Apple Watch Series 8, and a new "rugged" Apple Watch model, according to Bloomberg's Mark Gurman. Writing in his latest Power On newsletter, Gurman says the event, which is expected to take place in the early part of September, is already under production, implying...
Apple Watch Series 7 Starlight Midnight

Standard Apple Watch Series 8 Rumored to Feature Same Design as Series 7

Friday August 5, 2022 7:46 am PDT by
The standard 41mm and 45mm models of the Apple Watch Series 8 will feature the same design as the Apple Watch Series 7, according to Twitter user @ShrimpApplePro, who was first to reveal that iPhone 14 Pro models would feature a new pill-and-hole display. Titanium will not be an option for the standard Apple Watch Series 8 models either, according to @ShrimpApplePro, but Bloomberg's Mark...
iPhone 14 Lineup Feature Purple

Color Options for All iPhone 14 Models: Everything We Know

Monday August 8, 2022 3:59 am PDT by
The iPhone 14 and iPhone 14 Pro models are rumored to be available in a refreshed range of color options, including an all-new purple color. Most expectations about the iPhone 14 lineup's color options come from an unverified post on Chinese social media site Weibo earlier this year. Overall, the iPhone 14 and iPhone 14 Pro's selection of color options could look fairly similar to those of the ...
ios 16 beta 5 battery percent

iOS 16 Beta 5: Battery Percentage Now Displayed in iPhone Status Bar

Monday August 8, 2022 10:43 am PDT by
With the fifth beta of iOS 16, Apple has updated the battery icon on iPhones with Face ID to display the specific battery percentage rather than just a visual representation of battery level. The new battery indicator is available on iPhone 12 and iPhone 13 models, with the exception of the 5.4-inch iPhone 12/13 mini. It is also available on the iPhone X and the iPhone XS. Battery percent...
iphone 14 pro max camera bump compared lipilipsi 16 9

Bigger iPhone 14 Pro Max Camera Bump Shown Alongside iPhone 13 Pro Max

Monday August 8, 2022 4:33 am PDT by
The camera bump on the upcoming iPhone 14 Pro Max is expected to be the largest rear lens housing Apple has ever installed on its flagship smartphones, and a new photo offers a rare glimpse at just how prominent it is compared to Apple's predecessor device. iPhone 14 Pro Max dummy (left) vs iPhone 13 Pro Max All iPhone 14 models are expected to see upgrades to the Ultra Wide camera on the...
ipad pro magic keyboard white

Rumor Claims Next iPad Pro to Feature New Four-Pin Smart Connector

Sunday August 7, 2022 11:57 am PDT by
A new rumor claims that the next-generation 12.9-inch and 11-inch iPad Pro will feature a new four-pin Smart Connector, an update from the current three-pin connector in the iPad Pro. The rumor from Mac Otakara, citing "reliable sources," says that the next iPad Pro, expected to debut possibly as soon as this fall, will feature a new Smart Connector that has four-pins rather than three. The...