A hacker demonstrates a tweak injection that works on an iPhone running iOS 15.1

If you have been following the Odyssey Team’s progress on the upcoming Cheyote jailbreak for iOS and iPadOS 15.0-15.1.1 recently, then you should know that one of the major setbacks that is delaying the launch is preparing jailbreak tweaks to support iOS. and iPadOS 15 via dynamic without root and with libhooker as the tweak’s primary implementation tool.

But despite the aforementioned issues that the Odyssey team has faced, hacker Zhu Xinlang (@xina520) appears to be gaining significant attention Wednesday afternoon after posting a YouTube video demonstrating the successful implementation of the tweaks on an iPhone running iOS 15.1.

The video shows a hacker installing the YouTube Reborn jailbreak tweak via the Sileo package manager app and using it to perform privileged actions on the YouTube app that would otherwise not be possible when installing the app on a standard device.

But before you get too excited to see it, Xinlang warns on Twitter that the performance is “not as perfect as it sounds.”The hacks cite a lot of compatibility issues that still need to be addressed, however they seem to be adamant in continuing efforts to complete the project by maintaining “compatibility with some old components”, probably referring to old frameworks that are not libhooker.

It appears that Xinlang uses libsubstrate to inject tweaks in the demo video, which is different from the full-fledged tweak methods regularly used by major jailbreaks such as libhooker and Substitute. This method of introducing tweaks is likely to limit the types of jailbreak tweaks that can be used.

This is not the first video that Xinlang has posted on YouTube, in fact another video posted back in June shows that the hacker has been working on this project for over a couple of months now. Despite this, there is no indication that Xinlang plans to release this jailbreak after it is completed, so it should be treated simply as a proof of concept to demonstrate what is possible at the moment.