My used Q500 4K did not come with a user manual. The legend that explained the meaning of the blinking LEDs in the (.pdf) manual I downloaded from manualslib.com had a solid black background and was difficult for me to read. I edited it and made several changes that make it easier for me to use. I saw that someone had asked what the blinking LED's on the drone meant, so I thought I'd post the edited file for anyone to use if they wish.