After the receiver is connected to the flight controller, connect the USB to power the flight controller. After inserting the USB for the first time, disconnect the USB as soon as the LED on the receiver turns off. Repeat the operation twice, when the USB is inserted for the third time, the LED will start to flash double, and the receiver will enter the code matching mode.
After the 2.4G ELRS tuner module and the remote control are correctly connected, copy the ELRS.LUA file to the SD card in the remote control, the directory is SD Card/Scripts/tools, and then run ELRS.LUA for Bind operation.
After the binding is successful, the LED on the receiver will become steady on, and the telemetry signal can be received at the same time.