Wow! I've had to do that on some clinics where a new keyboard arrived at the store the same time I did...but I was was dealing with a Yamaha OS that was pretty much the same from year to year and model to model.

You certainly like living on the edge, Jim...my guess it's a Korg or Roland(what else!)since you say the format is different.

Whatever it is...good luck!

Ian the Mystified