You will need a high-quality SD Card (FAT32 formatted, 16GB or 32GB is recommended, not SDXC). Step-by-Step Installation Process (30–60 Minutes)
Updating the firmware takes about 30–40 minutes. Because the car must be in accessory mode (with the engine off) to prevent accidental data corruption, to your vehicle. A dying car battery halfway through an update can permanently damage the MMI logic board. Step-by-Step Installation Process: audi mmi 3g plus firmware update link
: You have MMI 3G High. This guide does not apply to your system. You will need a high-quality SD Card (FAT32
After you have purchased and downloaded the correct firmware .zip file for your system, extract all the contents. Important: Copy the extracted files and folders directly to the root of your SD card. Do not copy the .zip file itself, and do not copy a folder that contains the files. The root of your SD card should look exactly like the extracted folder. One guide even notes to not use a Mac to copy the files, as macOS creates lots of hidden files. A dying car battery halfway through an update
So, where do you find the update files? The most reputable options are: