Official firmware is generally not hosted for public download on Audi's primary website. Instead, users rely on specialized portals and community archives:
Updating your Audi MMI 3G Plus (HN+ or HN+R) firmware is a critical maintenance step that improves system stability, fixes Bluetooth connectivity bugs, and prepares your vehicle for the latest navigation map updates. While dealerships can perform this service, many owners choose a DIY approach to save costs and gain more control over their infotainment features. Identifying Your MMI Version audi mmi 3g plus firmware update link
Press Menu or Setup > Settings > Version Information . Check the Prefix: HN+ : MMI 3G Plus for A4, A5, Q5, Q7. HN+R : MMI 3G Plus for A6, A7, A8, Q3. Note: If you see HNav, you have 3G High; BNav is 3G Basic. Where to Find Update Links Official firmware is generally not hosted for public