EM7565 driver/firmware issue

[jyijyi]

i don’t know, no idea why your qcserial cannot work with that 90b1 even it has that information in modinfo

you can try to add it manually:

MC7710 with PID 9205, doesn't receive AT commands

Try reversing that. Your problem is that qmi_wwan binds to every interface which could possibly be RMNET/QMI. It doesn’t know which one is the correct one when you .use new_id. So it blocks qcserial from binding to interface #3, which is the AT command interface. Once you have AT command access you should probably change to a supported PID, unless there is a specific reason this module is using 9205.