After booting up 23.05.5 openwrt image, there is no modem under /dev, I can see ttyUSB{0-2}. It looks like someone can add the PID into the driver to make it work: qmi-wwan driver not loaded with Quectel EM060K modem · Issue #16165 · openwrt/openwrt · GitHub
So how do gi inet firmware get the modem working? Did you change the PID or have its own driver?