Free-speed-cam-updates provide a free and accurate database update for GPS RNS510 / RNS-510. These files works with at least these GPS or cars from the Volkswagen group :

Discover media, Skoda Amundsen MIB 2, Seat Media System, Discover-Pro 2, Columbus 2

Coverage :

Belgium: 1904 POIs, Switzerland: 638 POIs, Germany: 3844 POIs, Spain: 1510 POIs, … Read the rest