the "mylink unlock project" is for the windows ce based mylink units found in the trax,barina,colorado (import vehicles).
while you can unlock the mylink using the development mode you still need a mobile phone that's rooted to make any use of it because you need to modify the mirrorlink app to spoof a certificate for the android launcher and any app you want to mirror.
I have done this and its laggy and just a pita and a aftermarket unit was a better solution.
the mylink units in the vf and cruze are a qnx based unit and as far as I know there is no hack for the firmware.
what people are doing is using the
gvif interface between the main unit and the screen and adding another box usually android.
what they do is convert the hdmi output from android to gvif for the mylink screen to display the android.
then they ether install a another touch screen over the mylink screen to enable touch functions in both mylink and android or the splice into the original touch panel.
normally you will have to press and hold a steering wheel button or double tap etc to switch the display from the mylink to the android box.
I think the main problem is the current retail versions of this is they use cheap android boxes and that's where the problems will come from.
you can build one of these if you have experience with electronics but for most people they are stuck with the way overpriced options that are normally buggy because of cheap Chinese hardware used to maximize profits.