Trying to bind in betaflight, but am having issues.

[grand bough]

My receiver is entering bind mode, but when I click bind on my tx16s via the Lua script, nothing happens. I have to bind it this way, because the receiver apparently doesn't have Wi-Fi compatibility.

[hearty eagle]

Are they the same version of elrs?

[final blade]

Which receiver is it exactly?
were your tx and rx in the same major firmware version?

[grand bough]

HappyModel X12 1-2S Brushless AIO Flight Controller - ELRS - This is my RX I believe they are the same major firmware. But how can I verify?

[final blade]

this is an SPI elrs..

!spi

[vernal sage]

https://www.expresslrs.org/3.0/hardware/spi-receivers/
Flight controllers with built-in ELRS SPI receivers are not flashed using ELRS Configurator, the ELRS firmware is "baked in" to Betaflight. Thus to update your ELRS firmware, you'll need to flash the latest version of Betaflight for your FC. Betaflight 4.3.x is compatible with ELRS v2.x.x, and Betaflight 4.4.x is compatible with ELRS v3.x.x.
To set a binding phrase on a SPI receiver, enter it here and paste the resulting code in the Betaflight CLI: https://www.expresslrs.org/3.0/hardware/spi-receivers/#binding-phrase

[final blade]

so if your tx module is on 3.x, you'll need a 3.x-compatible betaflight firmware before you can bind both..

happymodel has released a betaflight 4.3.1 firmware with 3.x compatibility here:
https://www.happymodel.cn/index.php/2022/09/26/crazybeef4sx1280-4-4-0-support-expresslrs-v3-0-beta-version-firmware-download/

there's also the Betaflight 4.4-RC that's also expressLRS 3.x compatible