This jailbreak demo is reportedly based off of a single exploit and is considered “stable,†which is a brilliant achievement considering iOS 10 implements Apple’s KPP (kernel patch protection) security. This security has been known to cause instability in improperly implemented jailbreaks.
Just like with Luca Todesco’s Cydia Substrate demonstration on iOS 10, @ijapija00 is using a specialized alternative library to Cydia Substrate that can actually run on the latest firmware. This allows jailbreak tweaks to run despite Cydia Substrate not yet being updated to work on the latest operating system.
One thing that’s worth noting is he uses a set of third-party system query apps to show off the iOS version and the type of iPhone he’s using rather than going to Settings → General → About, which may cast some doubt because it’s not the standard way to showing off the software version in these kinds of demo videos. You should take this video with a grain of salt, just like the others.
It was built for the developer himself, who says releasing and maintaining a public jailbreak is a lot of work for just one person and carries a lot of burden of risk and responsibility for himself. His full commentary on why the jailbreak won’t be released is mentioned in the YouTube video description:
The major reasons for this not being published are:
1. Cydia Substrate is patched by replacing a library that loads the tweaks into the system. If we would have a un-patched Substrate for 10.x then I maybe would consider twice about this. But as long as it’s patched and I don’t own it, there’ll be not releases!
2. As a single developer, I don’t want to be responsible for other people’s devices, if they break or lose something. I neither don’t have the time to help people having problems with the jailbreak process itself.
3. Also, this jailbreak is stable sometimes and sometimes not. That means that it’s mostly used for testing tweaks or for private use and is NOT ready to be released at all!
When will be the public release ? We still don’t know but at least we still have hope that iOS 10 jailbreak still possible.