I've had my PV2 for just 3 days. It is as it came out of the box (except for the DJI prop guards). After 4 perfect problem free flights, in the middle of the fifth one, as the craft was hovering in place at about 360 ft it suddenly started to shake and vibrate. None of the controls worked anymore and it dropped like a stone. Landed in 2 feet of water. By the time I got to it, the battery had shorted and it was done for. I was too busy trying to get any control to have any kind of effect (including pushing the Up paddle all the way as I had read on this board) to see if there was a battery message on the iPhone. All I know is that after it crashed when I checked, there was a "connection was lost " message. It had all the software that came with it in the box. Since I am on a Mac I could not do any soft or firmware updates. Extremely disheartening. Good thing it was a relatively deserted area and no one was under it! I remember reading elsewhere (in the Battery warning thread perhaps) about someone else having a similar experience. Will be hard to regain confidence in it after this.