Hi everyone! I have an issue with the sat nav! When i start the car i get a white screen with message saying "please wait while the system updates!" There is no DVD in the DVD-ROM on the back where the control unit is. I have then lexus navigation cds but when i try to insert any of the three i have with the car doesnt work! It takes the cd in then it brings it back out? Any thoughts how could i cancel this update or reset the navigation to its factory settings?? Im uploading a picture of the screen i get!