https://consumerist.com/2017/08/23/owners-of-dji-drones-face-grounding-if-they-dont-install-fix-that-keeps-devices-from-losing-power/

The fun part about drones? The way they zip through the sky. Not so fun? If they come crashing to the ground unexpectedly. That’s why the maker of popular Spark drones is telling owners they’ll have to install an update that keeps their aircraft aloft — or face grounding.

Drone company DJI said in July that only a “small number” of Spark owners were losing power in mid-flight, sending the mini camera drones tumbling to the ground.