4) Plug in all Cords to Bafang Green Controller port.
5) Open "Serial USB Terminal", should recognize Programming Cord. At top, next to TERMINAL - Click Cable Connector Icon then you see connection complete
6) Open "Speeed" app and turn it Sideways for Landscape viewing. This is so you see the BLUE Connect button- push that.
Usually it connects and it works like the Laptop Programs you see for Bafang Programming. Google Bafang Programming and research articles there. Easy to burn out a controller if programmed wrong and you run high amps with a bogged down motor.
"Low Gear & Fast Motor Spin = long Controller Life".
Of course this Reprogramming voids any warranty. Good luck