When I Un boxed the Slave RC and turned it on it has a red light and const beeping. I upgraded the firm ware and linked it to the Master but no changes.
Overall Status says disconect fron Aircraft and go into RC setup and calabrate Joysticks, I cannot find this option.
You would go into the Camera View in the DJI Go app. Go to the RC section, which you can tap the RC icon to access and tap Remote Controller Calibration. Hit Calibrate and follow the instructions on the screen.