That’s very interesting. I wonder if it would be possible to snoop those MBIM messages so that we could add proper open source support for them? This would allow automatic unlocking from ModemManager, similar to what we have for the Sierra Wireless FCC lock implementation.
Maybe add some debug buffer printk’s in drivers/net/wwan/wwan_core.c? If I read the code correctly, those messages go through wwan_port_fops_write() and wwan_port_fops_read(). Should be pretty simple fo add a couple of print_hex_dump() lines there.
EDIT: forget it. I see that Joar already included those dumps with the tool. Full discussion at https://gitlab.freedesktop.org/mobile-broadband/ModemManager/-/issues/402