First of all, this guide expects you to have some basic knowledge how to use fastboot, have working ADB/fastboot connection on your computer and understand the fact that this may brick your phone if you mess up.
I am NOT responsible for anything!...
Suddenly this has become xdawhiners.. Call me lucky, but my phone is perfect with zero hardware defects.
error in step 2.2
It must be device-info with -
People really should use model names (X720, X727 etc) instead Pro 3.
X727 got this update, not X720.
HTC:TEGRA3:Xposed framework (android_device_htc_tegra3-common)
Some changes on the way to get Xposed working.