The team behind the Pangu
untethered jailbreak of iOS 7.1-7.1.2 has released a Pangu8 untethered jailbreak for iOS 8 - 8.1.

Currently a jailbreak utility is only available for Windows and at this time Cydia and Mobile Substrate are not working.

Here's the translated details via reddit user zsm1703.
more info visit here :PanGu iOS 8 è