The desktop app also lacks the vision calibration options. Seems like it has lots of opportunity for improvement.Yes you can use the DJI Assistant for Consumer Drone Series to upgrade the M3 FW. At this time that is all you can do with the M3. You can not change battery discharge settings yet or any configuration.
DJI Assistant 2 (Consumer Drones Series) - Download Center - DJI
At the DJI Download Center, learn and downloadDJI Assistant 2 (Consumer Drones Series)www.dji.com