Developer and hacker, Jonathan Levin released LiberiOS jailbreak yesterday, the first official jailbreak for iOS 11 – iOS 11.2.

Even though it is the first release candidate, and Cydia and Cydia Substrate for iOS 11 is not available, a lot of people seem to have tried to use the LiberiOS jailbreak to jailbreak iOS 11 – iOS 11.1.2 on their iDevice.

While many readers have been able to jailbreak their iOS devices successfully, some have reported that the jailbreak failed due to missing offset for their iOS device.

Levin has just published a post explaining that he wasn’t expecting so many non iOS 11.1.2 devices, and “even though in some cases the 11.0 offsets are same, some cases there’s not.”

So if you’re facing the issue of missing offsets, then you can help address the issue by posting the offsets for your iOS device on his forum so that he can release a new version of LiberiOS jailbreak which incorporates the missing offsets so that you can successfully jailbreak your device.

Here are the steps you need to follow to get the offsets for your iOS device:

A) Grab the OTA that’s your differential from iOS 11.1beta (doesn’t matter which) to iOS 11.1.2, using the iPhoneWiki. For example, if you have an iPad, you go to

https://www.theiphonewiki.com/wiki/OTA_ … /iPad/11.x

Why from 11.1.beta? because that way the OTA file is reasonably small.

B) Unzip the Ota file is some temp directory – locate exactly ONE file called kernelcache.release.something (something is your model name)

C) Download joker (http://NewOSXBook.com/tools/joker.html)

D) Run joker - dec kernelcache.release.something. (again – replacing something with your model name)

E) This will decompress kernel into /tmp/kernel

F) run jtool -S /tmp/kernel | grep _kernproc to get offset #1

G) run jtool -S /tmp/kernel| grep _rootvnode to get offset #2

H) POST these offsets here, along in the exact following format (so I can cut paste:

“11.1.2” , “_kernproc”, 0xfffffff843534534

Replacing “11.1.2” by your version number, “_kernproc” by one of the two symbols (“_kernproc” or “_rootvnode”) and 0xfffff… by the offset you got.

You should post the offsets for your iOS device in this forum thread. We’ll keep you posted as soon as the new version of LiberOS with the updated offsets has been released.

Source: iPhonehacks