No I didn't, basically because I am not sure how to. Is this where you change the value in CV 50?
One concern I have is that I am not sure all the defaults are set properly. When I use the 'read' function in Stellwerks Easy to read out all the decoder values, it says CV1 - CV8 inclusive seem to be 255, as is CV 29.
Now this could be because that is what is actually in there, or it could be that Stellwerks is not reading them correctly and is putting dud values into its displays. These are certainly not the default values listed in the loco documentation.
I contacted Stellwerks and they say, in rather broken English, that:
"MFX-decoder don't can be used by a DCC-system like Massoth DiMAX, LGB MTS or Lenz Digital plus. Your Loco must have another DCC-decoder. Therefor also STe-PC can't help. you. For more details you must ask Märklin or Massoth." [sic]
I am not sure that this is actually correct for all those other systems, as I seem to recall someone here saying they were able to program this very same loco with a Lenz. Anyway, I have sent a message to LGB, asking them whether it is possible this loco was sent out from the factory with an incorrectly programmed decoder.
What I really need is some way of reading the decoder, without using Stellwerks, to see if that program was reading it properly. Until I can be sure what is really in the CVs, I don't think it is a good idea to start changing them!! Can you suggest any simple CV reading software that I could use, without having to purchase another major product?