Hoping someone can help - I upgraded to the latest version of the firmware today (3.16), and now the lights flash alternating red and yellow when the copter is powered on. I attempted to follow the instructions on the DJI website to recalibrate the compass (http://www.youtube.com/watch?v=Vo7Kf3uo93I), but toggling the GPS switch 10 times doesn't put the copter into calibration mode - it just continues to flash red / yellow. I know the transmitter is working because when I fire up the NAZA software, I can see the numbers change when I move the stick. Any ideas? Thanks!