I did everything according to the Hobbywing Ezrun 150a esc manual. Hold the Set button. Turn on esc. Release the Set button immediately when I saw the red light flash. Turn on my GT2b. Let it stay in Neutral position. Press the Set button. However, this is where things go wrong. The red light stop flashing, and there is no green light at all. It doesn't matter how many times I press the Set button, there are no response or any light indication. Any help is appreciated. Thanks.