If you heard the news about the release of iOS 12 jailbreak, do not rejoice, because the news is false. Developer
Most developers release newjailbreak tools in the season of the New Year holidays, so this year users also expected the release of jailbreak iOS 12. That is why false news began to appear on the network.
There’s a fake jailbreak for iOS 12 floating around. Don’t fall for it and stay away from iOS 12 if you care about jailbreaking.
— Pwn20wnd (@Pwn20wnd) January 1, 2019
The so-called jailbreak has already been removed. If you have already updated your jailbreak device from iOS 11 to iOS 12, then you will have to forget about jailbreak. Apple no longer signs iOS 11.x or even iOS 12.0.x, so rolling back to iOS 11 is not possible. You can only expect the release of a real jailbreak iOS 12, although so far the chances are very small.
Some say the fake news was an innocent rally from the Flux developer, but many users fell into the trap and lost their iOS 11 jailbreak.
For iOS 11 - iOS 11.4 beta 3 there are two whole jailbreak tools available, but iOS 12 jailbreak does not exist yet. There is hope for his exit, but it will not happen soon, because much work remains to be done.