My software version is MH2p_ER_AUG35_P2470, so it's good to know there is an update available in P2647.
pthomps - How did you update your nav database? Mine is V03959804B_P0210_EU_2018.1
So attached is the software version after the car was serviced yesterday - apparently the update took several hours..
Now running MH2p_ER_AUG35_P2470
So you need to logon to my.audi.com and select 'Features'. From there you can download the installer for latest map update (see screenshot). I used a Windows 10 PC, and you need Java client installed. Also (for me, anyway) I had to associate the .jnlp installer file with 'Java Web Start' to get the download working.. Once downloaded, copy all the downloaded file(s) to an SD card and insert the SD card into the car, which after a minute or so will automatically detect the map update and prompt whether you want to install it.
All a bit of a pain really; my understanding is that the car is supposed to automatically detect when there's a map update available and prompt to install over the air. But mine never has. Maybe it will after tomorrow's software update! ;-)