If you find map files online (e.g., from forums or archives), you cannot simply put them on a standard SD card. You must use a —a special type of card (often older Samsung EVO models) that allows you to manually overwrite the hardware serial number to match the official VW CID. Copy firmware / maps on to SD CARD
Insert the updated SD card into the RNS 310. Turn on the ignition. The system will read the new maps automatically. No further activation required. rns 310 navigation sd card download