Someone please correct me if I am wrong, but what I came up with is that you need the special cable and 3.3V power supply to upload the flarmnet file the butterfly display for the Brick version. Supposeably the next version of firmware for the flarm will allow you to put the flarmnet file on your thumb drive and insert it into the Flarm, The flarm will then transfer the file to the butterfly display.

I decided to just wait for the new firmware, if that doesn't happen I may look into making the cable to upload to the butterfly display.

Brian