Took the Spark out this morning to film some friends playing airsoft, I stumbled upon a fairly large colony of pelicans. Still unsure about the state of the AC after those last updates, I didn't venture closer. Being the 1st outside flight after said updates, the Spark behaved fine, although I was unabe to stop videotaping, the button wouldn't press, neither the phone one nor the RC one. I already filmed for about 11 minutes so I didn't wanted to corrupt the footage, wich is what would have happened if I turned off the AC. So I close the Go4 app and turned it on again, while the AC was still on, and on the ground. It worked, I managed to stop filming. I don't know if it's the remote's, the AC's, the app's or the phone's fault. After that, (this was my 1st battery), I stoped video taping after 2 or 3 minutes and started again, so I didn't film a 12 minutes long video but multiple 2 or 3 minutes one. I had no problem stoping it.