How to Bind with SPI Frsky Receiver -- A Guide for EU-LBT Radio Controller Users

This guide is written specifically for EU-LBT radio controller users. If you find that you can't bind your EU-LBT radio controller to F4 FC (SPI Frsky Receiver), please take a look at the guide below.

You have two solutions to choose from actually. 

Solution A is to flash your Open-TX to FCC and bind in D8 mode. 

Solution B is to flash both your Open-TX and Internal Module to FCC and then bind in D16.

Solution A

You can bind your EU-LBT Frsky Radio Controller to the F4 Frsky FC in D8 mode.

1. Flash the Open-TX to FCC firmware

Here is the video of how to flash the Open-TX to FCC firmware

2. In Betaflight Configuration, it should be set as FRSKY_D receiver (aka Frsky D8 mode) in SPI RX mode.

3. Finally, you can go to the binding procedure

Step 1
Power on the board, either by connecting the battery or USB power. Then the green receiver LED starts to flash.

Step 2
Click the bind button for 3s. Then the green receiver LED will be solid on. This means that the receiver is in bind mode and you could start to bind your radio transmitter.

Step 3

Now, on the radio, power on the radio and set the protocol mode to D8. Then enter the bind status(or what it takes to enter bind status).

Step 4

The green receiver LED on the FC boards should flash slowly. This means that binding is successful. Then exit the bind status on your radio transmitter and the green receiver LED should be solid. This means the connection is ready.

Solution B

If you want to bind your radio controller in D16, you have to flash both Open-TX firmware and internal module to the FCC version.

1. Flash the Open-TX to FCC firmware.

2. Flash your internal module to Non-EU firmware.