Today I turned on the DJI assist program to recalibrate the sensors on the Mavic as in the video, and everything went great UNTILL I got to the screen that calibration takes place. No black dots or any function of the cal program, it just sat there, white screen, Moved the Mavic in and out and nothing. tried exiting and back in , no workie. back to the main menu. looking at the current firmware, I had an option to Refresh,so that is what I did. running ver 1.03.0200. 10 minutes later, ready to go. Took it out and checked all settings, with sensor all on and Bamm, still not working correct. Turned off sensors and all is good. back to square one. Just a little update . Thanks all, Jeff