The support for Bluetooth in EdgeTX is limited to:
Bluetooth Trainer Mode
Bluetooth Telemetry Streaming
The following Bluetooth options are not supported.
Wireless file access and transfers
To use Bluetooth, you will need a custom compiled version of EdgeTX that needs to be built with the BLUETOOTH=YES CMake flag. You can create customized versions of EdgeTX using the CloudBuild tab on the EdgeTX Buddy website.
Once the correct version of EdgeTX firmware is installed in your radio, the Bluetooth configuration options will be available on the Hardware page of Radio Settings.
The only off-the-shelf bluetooth modules supported by EdgeTX are: