If you have been following Jailbreak community for last few weeks, you would have noticed lot of happenings. It is because of release of iOS 11.1.2/11.2 untethered jailbreak tools like LiberiOS and Houdini11.
Lot of utilities are available to untethered jailbreak iPhone and iPad on iOS 10.3 and iOS 10.3. However, if you have already updated your iDevice to iOS 11, iOS 11.1.2, iOS 11.2 or iOS 11.2.1, then downgrading to iOS 10.3 is not straight forward process, rather a bit complicated.
Have your jailbroken your iPhone X, 8 Plus, 7 Plus, 6S, SE or iPad Air/Mini on iOS 11 – 11.1.2 using Houdini11 or LiberiOS and now want to restore without updating to latest version? If answer is yes, then Prometheus is the tool that can rescue you out of this miserable situation.
As you are aware that recently LiberiOS 11 jailbreak tool was released for all iDevices running on firmware up to iOS 11.2.1. However, the main issue with this jailbreak tool was non-compatibility with Cydia.