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Following 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.
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Except that most are just fine updating.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.
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.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."
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."