Looking at the WiFi NTRIP Master and the fact it is basically AFAICS just an ESP32. I’m wondering if it would it be possible to just connect an ESP32 to the xbee socket (to the appropriate pins obviously, nicely marked on the ntrip master) and use the software off asrdusimple’s github?
To install a firmware update you use espressif’s flash tool software anyway.
It would be at the very least an order of magmitude cheaper… 