You can’t bind. I bought just the rtf as well and was trying to bind with the black button, then I learned it wasn’t a bind button. Then I dug into the flight controller then found a gray button that fit the description everyone else was talking about but found out it was boot button. THEN I looked at EMAX USA’s video and found out you can bind from beta flight(if the receiver is SPI, which it isn’t) so I tried that didn’t work. Then I finally realized there is no recieven in the first place you will just have to solder one onto it. For now though I’m just going to buy the betafpv meteor 75 pro.