I think the option could be added to the main flashing page when selecting a receiver if the advanced/expert option is enabled.
For ESP32 based receivers the user can select Internal (Full-duplex) or External (Half-duplex) as an option. ESP8285 receivers only support Internal mode. STM32 is not supported.
This would only be supported from V3.5 unless we update all the older artefact files.
A new PR has been added to the main firmware repo https://github.com/ExpressLRS/ExpressLRS/pull/2826 which provides an option to the flasher to allow flashing an RX as a TX.
I think the option could be added to the main flashing page when selecting a receiver if the advanced/expert option is enabled. For ESP32 based receivers the user can select
Internal (Full-duplex)orExternal (Half-duplex)as an option. ESP8285 receivers only supportInternalmode. STM32 is not supported.This would only be supported from V3.5 unless we update all the older artefact files.