Expresslrs v1.2.0 over SPI – sx1280 and sx1276 support by phobos- · Pull Request #10788 · betaflight/betaflight (

Standard bind procedure.
Using your favourite method (configurator button / cli bind_rx command / physical button on the board / setting expresslrs_uid = 0, saving and rebooting the board) put the rx into bind mode. Enter elrs lua in your handset and press the bind button. RX and TX should be now bound. Please mind the order, RX first, TX second. How to bind tutorial (thanks to @JyeSmith ):

ExpressLRS Happymodel 2.4 AIO Binding How To – YouTube