After seeing alot of questions and frustration here is a alternative method of getting JIT. It is nothing new it is the latest customizer made by ttxdragon.
You will need to have root and BusyBox installed. Just download enable usb debugging on your phone then connect via USB.
Then run RunMeWindows.bat and the rest is all self explained. Thanks to cmd interface it is easy to get done and its mess proof.
Hope It Helps