Apple has posted a support page on the security content of the just-released iOS 8.1.1, reaffirming previous reports that the firmware breaks the Pangu jailbreak tool. In the page, the company credits the Pangu team for discovering three vulnerabilities patched in 8.1.1.
Among those vulnerabilities was a state management issue in the dyld directory, which has to do with app launches. There was also a validation issue in the handling of metadata fields with the kernel, and a sandbox profile bug that allowed apps to launch arbitrary binaries.
Apple just released iOS 8.1.1, which kills the Pangu jailbreak. The good news is that it is (as of the writing of this post) still signing iOS 8.1. This means that you can still install iOS 8.1 and jailbreak for the time being.
But you better act fast. Apple has been very unpredictable when it comes to closing its signing windows. Once the window for iOS 8.1 is closed, you will not be able to upgrade or downgrade to iOS 8.1. You'll have to go directly to iOS 8.1.1, which renders your device unjailbreakable.
Apple on Monday started rolling out the latest iOS 8.1.1 software update for the iPhone, iPad and iPod touch devices. If you're jailbroken, stay away from this update as it plugs the Pangu8 jailbreak.
iOS 8.1.1 build 12B435 contains a whole bunch of bug fixes and general performance enhancements aimed at improving the mobile operating system's stability. You can apply the update over the air by going to Settings > General > Software Update.
Perhaps you've been holding out on updating to iOS 8.1 until there's a "stable" jailbreak and a stable version of Cydia. Maybe you're like Sebastien and Cody, and just want to make sure that things run smoothly enough, and that the compelling tweaks are updated for iOS 8 before taking the leap.
Throw all of that logic out of the window. If you're an iOS 7.x jailbreak holdover, it's time to stop holding out and just update. iOS 8.1.1 is now in beta, and it has been confirmed to kill Pangu's iOS 8.x jailbreak. Even if you don't want to jailbreak right now, it's still a good idea to go ahead and upgrade to iOS 8.1, so that when the jailbreak does meet your needs, you can still jailbreak on iOS 8.
The cat and mouse game between Apple and the jailbreak community is still very much happening, if an unconfirmed message from an apparent member of the Pangu Team is to be believed.
Weibo user Daniel_K4, who is apparently a member of the Pangu Team recently posted that iOS 8.1.1 beta that was released yesterday patches exploits used by the Pangu jailbreak, incapacitating the jailbreak process on devices that will be updated to the latest OS version once it is released to the public.
Apple has seeded the first beta of iOS 8.1.1 this evening, with build number 12B432. The release comes just a few hours after Apple pushed out the first beta of OS X Yosemite 10.10.1, and roughly two weeks after it officially launched iOS 8.1 to the public.
Folks who are jailbroken may want to hold off from updating, until it's clear that this won't hamper the Pangu Untether in anyway. Otherwise, feel free to check it out, although you'll likely disappointed—we're not expecting much more than bug fixes here.