I tried other firmware. There is one that muffles the colors, but it doesn’t get rid of the bluing either . This is typical of the sj 4000 model with Wi-Fi. Has pros: Tiny, comfortable, good equipment. Light weight. Color monitor. Razor sharpness. An excellent choice for a quadcopter. Has some cons The quality of the video could be called excellent, if it were not for the almost constant synthetic blue in the shadows and in the sky even white clouds try to turn blue . Manual balance will correct one thing, spoil the other . Sound? It's hard to call it sound.