Please choose correct software version and go to purchases the software. Note that in single purchase you can activate both or more features (Rear Camera and Rear Speakers or you can select other features like Eco Drive, Temp, etc. if your car support).
For installation video you can go in product description, every product has description below and video.

You need to choose your correct software version.
After successful payment you can download software immediately.
You can watch video how to install this video player software.