I bought a used GT2.0Pro esc, I loaded V1.36 to my computer.

I connect the esc to the LCD program box, the positive and negative are correct. I then plug the USB cable into the program box and into the USB port on my computer.

I bring up the V1.36 program on my computer and the program box just says 'Connecting to Computer' but never connects.

Now if I plug the esc into the 2s battery of the car, the 'ESC Speed Control' on the computer lights up bright green and the program stuff comes up on the computer where I can change settings, but the 'Busy' box on the computer still shows and the LCD program card still says connecting to computer.

What am I doing wrong?

Thanks.