Sorry for the late post, but I have a EM7544 in an external USB3.0 enclosure. Modem is MBIM, since I use it in a PC, it offers better compatibility.
In the past (TOSv3.11), I used MBIM protocol with a custom mbim.sh script, and I didn’t have Luci support.
Since TOSv5, I’m using ModemManager. I installed luci-proto-modemmanager from Openwrt master.
Modem is recognized and configurable in Luci.
ModemManager should be able to support MBIM and QMI modems.
2 Likes