I am retrofitting an RNS-D from an 03 A6 into another 03 A6. I downloaded the 2003 RNSD firmware update, put it on a CD and started the update. I now find myself in a firmware update loop. I don't receive a "completed" message. The firmware came from here: http://forum.a8parts.co.uk/showthread.php?t=5332&page=2 Here is the screen it comes up with each time I plug in the RNS-D and I load the f/w cd: I insert the fw update disc, it loads, gets to the end, powers off, ejects the disc and comes up with a screen asking for CD to be loaded. No matter what I do I can't get out of this mode. Any advice would be appreciated.