Just got off the phone with DJI support. I just got my PV on Monday. The first day, the bird only flew in 20' circles, very hard to land! Thinking I would check the firmware, I loaded up the DJI Assistant (ver 3.0) Was advised therein to upgrade several firmware/software items. After the upgrade, the bird would not even start the motors. According to DJI Support this is a common problem they are working on at this time. They hope to have a fix in the next day or so. good luck out there!