Hi guys, After some successful flights, with GPS, I suddenly have a problem. When I toggle the S1 from position-1 to position-3 and back to position-1 about 10 times the yellow blinking lights don’t turn into a solid yellow light, so I’m not able to force the aircraft to enter into compass calibration mode. I'm able to fly, but not in GPS-mode. Any suggestions about how to solve this problem? The software is up-to-date. Thank you very much for your help!