Hello Butters,

yes the Garmin Drivers are current and updated (serveral times ). The thing with the power-button and pre-boot is that it is not reacting anymore to this, since the "failed" update. Before it was consistently working and was easily recognizable with the updater.exe. Now, no matter what and how often I try its not coming anything. While in device-manger its showing for a short while, on updater it is no joy. And yes, I usually had to hold the power button and then plugged the cable. Worked like a charm. I think it is quite bricked now, as it is so fast in rebooting that one does not have a chance to come by it. I have contact with a avionics shop in Germany, they say they can try with a Garmin-Software (whatever that may be) if its responding. And yes, indeed it is very sad not having the unit, because they seem to have done a pretty good job by connecting it to the autopilot and fuel flow computer and also getting traffic info from an external ADS-B Device. It has a cradle for the center dash and would look quite neat... If it would work though But I have now idea how to convince it to talk. Tried all the things from the other threads (usb-ports, cables, etc..)