1. No the SUB Hub does not have an SD Card slot.
2.the truck is a 2017.
3.im using the same set up that you used in your video the green to grey I believe from hmi to input on the hub then black to brown the output from the hub to the connector
4.all that happens is that it charges it that’s about it
5. only the USB ports work as a charging plug that’s it and the aux is not work