Apple Stops Signing iOS 12.3, 12.3.1 and iOS 12.3.2 After Releasing iOS 12.4 - MacRumors
Skip to Content

Apple Stops Signing iOS 12.3, 12.3.1 and iOS 12.3.2 After Releasing iOS 12.4

by

IPSWFollowing the release of iOS 12.4 on July 22, Apple has stopped signing iOS 12.3.1 and iOS 12.3 the previous versions of iOS that were available to consumers. Apple is also no longer signing iOS 12.3.2, an update exclusive to the iPhone 8 Plus.

iPhone, iPad, and iPod touch owners who have upgraded to iOS 12.4 will no longer be able to downgrade to iOS 12.3, 12.3.1, or 12.3.2.

iOS 12.4, available on all devices able to run iOS 12, was a major update with Apple News+ improvements and a new device-to-device data migration option when setting up a new iPhone.

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 12.4 is now the only version of iOS that can be installed on iPhones and iPads, but developers and public beta testers can download iOS 13, an upcoming update that's currently being beta tested.

Top Rated Comments

C
C DM
90 months ago
...
Except that most are just fine updating.
Score: 3 Votes (Like | Disagree)
Junipr Avatar
Junipr
90 months ago
However, Apple is still signing their LEGO blocks with iPod Classic
Score: 2 Votes (Like | Disagree)
- rob - Avatar
- rob -
90 months ago
This is good for the security of all iOS users.
Score: 2 Votes (Like | Disagree)
I7guy Avatar
I7guy
90 months ago
Shame it didn't fix all six Zero days with iMessage I belive. it had six fixes but one CVE is still listed as vulnerable by Project Zero who are not releasing the information at this time, as it takes no intraction from the user which is scary, so I imagine we will see a 12.4.1 or whatever its called to patch the last vulnerability quite quickly.

https://www.zdnet.com/article/google-researchers-disclose-vulnerabilities-for-interactionless-ios-attacks/

"Details about one of the "interactionless" vulnerabilities have been kept private because Apple's iOS 12.4 patch did not completely resolve the bug, according to Natalie Silvanovich, one of the two Google Project Zero researchers who found and reported the bugs."
Been living with windows zero day vulnerabilities for 10+ years and I consider the surface area of attacks for windows far greater than iOS. Apple will release 12.4.1 that will resolve the last issue.
Score: 1 Votes (Like | Disagree)
killhippie Avatar
killhippie
90 months ago
12.4 is a stellar release, IMO, on my max and xr. Works great on my 5s also.
Shame it didn't fix all six Zero days with iMessage I belive. it had six fixes but one CVE is still listed as vulnerable by Project Zero who are not releasing the information at this time, as it takes no intraction from the user which is scary, so I imagine we will see a 12.4.1 or whatever its called to patch the last vulnerability quite quickly.

https://www.zdnet.com/article/google-researchers-disclose-vulnerabilities-for-interactionless-ios-attacks/

"Details about one of the "interactionless" vulnerabilities have been kept private because Apple's iOS 12.4 patch did not completely resolve the bug, according to Natalie Silvanovich, one of the two Google Project Zero researchers who found and reported the bugs."
Score: 1 Votes (Like | Disagree)
I7guy Avatar
I7guy
90 months ago
12.4 is a stellar release, IMO, on my max and xr. Works great on my 5s also.
Score: 1 Votes (Like | Disagree)
Read All Comments

Popular Stories

Apple Event Logo

Apple to Release These 15 New Products Later This Year

Friday June 12, 2026 7:45 am PDT by
Apple's annual WWDC developers conference is drawing to a close, but there is still a lot to look forward to in the second half of the year. Apple is expected to release at least 15 more products later this year. Now that the more intelligent and personal version of Siri has finally arrived in beta, a full two years after Apple first previewed it at WWDC 2024, we should begin to see some new ...
Read Full Article • 46 comments
iCloud iPhone 17 Pro

iPhone Users Who Pay for iCloud Storage Get Two New Perks on iOS 27

Tuesday June 9, 2026 11:29 am PDT by
If you pay for extra iCloud storage on your iPhone, beyond the 5GB included for free, you might receive two more perks on iOS 27 at no additional cost. First, Apple said there will be daily usage limits for some of the new and enhanced Apple Intelligence features on iOS 27, including image generation. However, the company noted that "increased access" is available with "most" iCloud+ storage ...
Read Full Article
Apple Logo Top Half

Have One of These 16 Apple Devices? Software Support Ends This Fall

Saturday June 13, 2026 8:00 am PDT by
Apple will end software support for 16 devices this fall across four product lines, with the Apple Watch seeing the most sweeping cull in the product's history. The full extent of this year's software drops became clear with the announcements of macOS 27 Golden Gate, iPadOS 27, tvOS 27, and watchOS 27 at WWDC this week. The one bright spot is that iOS 27 features identical device support to...
Read Full Article • 250 comments