Need to purchase early version high definition RNS-E 2010+, where Audi haven't got rid of some wires yet by packing those signals to canbus.
Some wisdom how to install RNS-E 2010+ in FL D2 is documented at the bottom of this thread:
http://forum.a8parts.co.uk/showthread.php?t=5884
Start reading from page 5...
I can help you MJ if you decide to do it
>> Presume that's a mk1 A6 surround cut down to suit the D2 dash and fitted on to the mk2 buttons?
Correct. Surround from mk1 A6 cut down and transplanted to A3 unit, which should have hardware version 04 or lower
Another trick is code the unit with A6 coding
Latest software version 220 will work fine with A6 coding, though it will not allow to code itself for A6 initially.
Workaround: Downgrade software to version 150, which will still accept A6 coding and then upgrade software again to 220
Additional useful stuff:
RNS-E 2010+ maximum road speed display feature
http://forum.a8parts.co.uk/showthread.php?t=7127
AMI installation on D2 (only works with RNS-E 2010+)
http://forum.a8parts.co.uk/showthread.php?t=7109
Adding auxiliary input and USB charging socket
http://forum.a8parts.co.uk/showthread.php?t=3148