Thanks for your respons, I also assume Dutch is not supported, I am hoping for English.

Thing is I have a separate SES box with the German language hard coded in it. When I pull the plug out of it the whole VR does not work. I looked at the ULF and it has 'mit SES' written on it. So the way I think it works is that I pull the plug, put on the jumper switch and only then (because of the rewiring of the SES plug) the SES/VR of the ULF is used... So I think I just answered one of my questions...