Use a high-quality Class 10 SDHC card (up to 32GB).
(CID data). Simply downloading map files from a forum and dragging them onto a standard retail SD card usually results in a "Card Error" because the unit looks for a genuine VW hardware ID. 3. Installation Steps
Download — Rns 310 Navigation Sd Card ((link))
Use a high-quality Class 10 SDHC card (up to 32GB).
(CID data). Simply downloading map files from a forum and dragging them onto a standard retail SD card usually results in a "Card Error" because the unit looks for a genuine VW hardware ID. 3. Installation Steps
