Inactive Recognized Developer
Blatantly fake. The video focus is terrible, probably to hide the fact that the System info page doesn't say 8.1 on it anywhere (that I could see...), but there are plenty of other clues too. No Start button is the obvious one. The taskbar icons for Word, Excel, PowerPoint, and OneNote but not for Outlook is also very suggestive. He also shows no actual jailbreaking process at all.
Oh, and this is neither development nor hacking. It belongs in the General forum, not here. I get that you are Really Excited about this and think it is Magic an all, but please do at least attempt to follow the forum rules...