One thing i found with Spektrum,plug in the Rx, The light should be blinking rapidly. Hold the bind button, Turn the radio on, The light on the Rx should start blinking slower. keep holding the bind button. As soon as the blinking changes, let go of the button and wait. After a few seconds it should be bound. I found that if you hold the button past that point when the blinking light pattern changes, it doesnt work. At least thats what has always worked for me. Once bound, shut everything down and unplug the bind plug before turning back on. Hope this helps.