[AudiA4B6US]

There was no RNS-E in 2002, the oldest software version you should see is 0050 from 2003 (for the EU unit) and 0020 from 2004 (for the US unit). You are talking about the DVD based RNS-E and not the CD based Nav+ (RNS-D), are you?

 

[AudiA4B6US]

If you are using CDs as map and buttons on the left and right side of the screen, then you have the CD Nav Plus. If you are using DVDs as map, if your device can read SD cards and has only button on the right side to of the screen, then you have the DVD based RNS-E...