I went ahead and followed the instructions from the first post. Update was successful, but I do not have the day/night option on my car. I drove around for 10 mins then let the ibus fall asleep then start the car back up and nothing changed. I went ahead and did the update again. The nav said that it already had the software version and it ejected the CD. Whats going on with my nav? btw is an mk4

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