Picked up a RNS-E off of eBay. Very easy install, took maybe 30 minutes tops. Plug and play. I put a COMAND system in my c230, this was much much easier.

When I was installing, there was and still is an extra plug behind the unit. Anyone know what this is for? My car is a 2007 A4 that came with SymphonyII+ - it it "prewired" for satellite although I do not have the module installed. I do have the Audi iPod interface. No CD Changer.

There were 2 blue plugs and one green one. One of the blue plugs is extra.

Video in motion has been activated - has anyone had luck playing movies off of the SD cards? I'm going to pick up a few SD cards today, are there still limits of 2gB cards? Or is this only with older versions of firmware?

Last question...this is the info for my unit....

SW: 0200
HW: H73
Map: 8P0919884_Q_NAR

I have been reading online that newer versions of firmware are available. Should I upgrade this? And if I do, will it mess up anything since this is a European model? Are there newer maps out than what I have?

I've asked these same questions to my seller, but there is a bit of a language barrier.

I appreciate everyone's help.