Unable to Setup Generic Ground Vehicle Airframe

QGC version 4.4.0

I am unable to get the Generic Ground Vehicle (Ackermann) airframe to apply to pixhawk 6x (1.15.0)

Each time I attempt to apply the airframe change, the device restarts as expected but returns with “Airframe is not set” the next time I open the vehicle setup menu.

I have tested and am able to apply the generic quadcopter airframe but upon trying the ground vehicle (the one I need) I am returned back to no set airframe.

Edit: Appears i hadn’t dug deep enough into documentation and needed to flash the ackermann rover build over to the pixhawk.