Apple Stops Signing iOS 11.1.2, Downgrades and Restores No Longer Possible

Apple Stops Signing iOS 11.1.2, Downgrades and Restores No Longer Possible

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Apple has stopped signing iOS 11.1.2 which means that downgrading or restoring to that firmware version is no longer possible.

Currently, Apple's latest firmware is iOS 11.2.1 and developers have been seeded with iOS 11.2.5. If you accidentally update or restore, you'll find yourself on iOS 11.2.1.

Iam Beer of Google's Project Zero recently released an Async_Wake exploit that works on iOS 11.1.2. Jonathan Levin, author of MacOS and iOS Internals, confirmed the exploit works on the Apple TV and is planning to upgrade his jailbreak utility iLiberTV. Levin also says he will release a jailbreak toolkit described as "a dylib for those people who end up with a send right to the kernel_task port (a.k.a tfp0) in their process, but don't know what to do next."

Following closure of the signing window, Levin said, "HA. Apple closed the 11.1.2 signing window. Told ya so. Toolkit coming soon -- for those who upgraded in time or stayed in 11.x but below 11.2. If you're on 11.2.x - that's your problem. Don't wen ETA. Next time, read carefully and heed warnings."

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Apple Stops Signing iOS 11.1.2, Downgrades and Restores No Longer Possible
Shubham Garg - December 20, 2017 at 5:43am
Either Apple should start seeding stable ios or start signing previous stable os because these iOS versions aint worth anything 😡😡😡 spoiled my 7 plus 😫
Dylan - December 17, 2017 at 3:06am
Lol I thought 11.2.1 was the one that had a jailbreak. Haha I’m dyslexic or just forgetful. Maybe I knew this whole time it was 11.1.2 and I’m just fooling myself. Oh well I keep IPSW files around for everything nowadays because you never know when you might need to downgrade for something.
jr - December 17, 2017 at 12:29pm
so if i kept a ipsw of 10.3.1 and i'm on 11.2, can I still downgrade to 10.3.1 even though apple stopped signinng 10.3?
Tmel4198 - December 17, 2017 at 8:04pm
No....
Tmel4198 - December 17, 2017 at 8:05pm
You cant downgrade once a firmware is dine being signed
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