There's a thread in the A4 section that isn't getting much love. Apparently, some people have had success in upgrading their 3G MMI to 3G+ MMI. That brings with it google maps and a number of other enhancements. Sadly, I can't find any detail anywhere on what would be needed for this.

I have a 2010 S4 Prestige and would like to upgrade the MMI if it is reasonable. Anyone have any opinions on how to do this the most easy way possible? I'm not interested in aftermarket components, but just upgrading the brains of the stereo.