RNS 315 sat nav update RNS 315 sat nav update UPDATE OF NAVIGATIONAL CHARTS FOR RNS 315To effectively navigate routes to gas stations, ATMs and restaurants, update the navigation map in your car with the RNS 315 system.Latest 2020-2021 v12 Satellite Navigation Map SD Card for RNS 315How to determine what is installed in the car in the RNS315?Press SETUP and hold for about 10 seconds. On the next screen, select the “Version” option.RNS 315 has 5 information lines:*Part number* Software versions* System hardware versions*Navigation data: part number*Navigation data: version go to catalog