I have tried everything I could find online to get the system to calibrate. With external compass and GPS without QGroundControl, Mission Planner etc. With power with USB every possible combination possible, Tried it on a PC on a MAC… I’ve also re-flashed it several times. I can make a video if that helps. Nothing works. Radio hooks up fine everything else is OK, I really need to get this working Putting it on a Flamewheel 450.