Trouble with USB Jtag Method

Hi guy's ive been trying to Jtag/Flash my xbox360 via usb but have failed badly ): Im currently trying to use the premade xexmenuv1.6 usb technique but after booting from the program on my xbox360 the process keeps failng at 89%.
Has anybody got this working yet and if so where am I going wrong?
This is the technique website I got the Premade loader from,
Thanks for any help in advance.
www.easyjtagmethod2015.com

 

It's bullshit. A scam. There's no possible way to jtag/RGH a console with a USB.

 

No such thing.