The Matrice 210 is a complicated aircraft, and can at times get into a bad state where software and hardware resources aren't loaded properly on the device. These issues are almost always apparent at startup.
In almost all cases, a simple reboot of the aircraft and controller will fix the issue.
These issues can include (but are not limited to) the following symptoms:
- No battery level displaying
- Sensor feed labels are reversed
- Sensor controls not responding
- Video feed is black or freezes shortly after startup