Instructions on how to jailbreak your iPad Air 2, iPad Air, iPad 4, iPad 3, iPad 2, iPad mini 3, iPad mini Retina, and iPad mini on iOS 8.0 - 8.1 using Pangu8 for Mac...
Apple has stopped signing iOS 8.1.2 meaning that it is no longer possible to restore to the firmware version to jailbreak your iPhone, iPad, or iPod touch.