I believe there is way by downloading the camera database from the Garnin site, at a cost, onto a USB stick then uploading them into the car. But it's complex and fraught with issues.
I use a stand alone Aguri GTX 200 which combines cameras with a dashcam mounted in the drivers lower corner of the windscreen, and then power it from a battery pack which sitS underneath on the dash board so no leads trailing across the dash.