Apple Stops Signing iOS 10.1.1, Downgrading or Saving .SHSH2 blobs No Longer Possible

Apple has stopped signing iOS 10.1 and 10.1.1 on Tuesday in a move that’s sure to choke the jailbreak community a little bit further. It’s typical of Apple to follow this kind of behavior after a new firmware release, so it’s not surprising this would happen as iOS 10.2 was released just over a week ago.

Downgrading can be useful in cases where the previous iOS software update can be jailbroken. So it would have been quite useful if it was possible to downgrade to iOS 9.3.3, which can be jailbroken using Pangu Jailbreak. Some users also prefer to downgrade back to the older version if they face problems after upgrading to the latest iOS software update.

Well-known hacker and security researcher Luca Todesco has announced that he may release an iOS 10.1.1 jailbreak based on a kernel and root exploit published by Ian Beer from Google’s Project Zero, so it would have been useful if you could downgrade to iOS 10.1.1 after the jailbreak was released.

iOS hacker tihmstar has also announced that he plans to release a new tool called Prometheus, which will allow users to downgrade or upgrade to an unsigned iOS firmware version. He had also released a new tool called tsschecker which allowed you to save .shsh2 blobs, which would be required by Prometheus to downgrade or upgrade to an unsigned iOS firmware version.

If you missed your chance… well, better luck next time!


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