qmi-firmware-update --device=/dev/cdc-wdm0 --update /path/to/firmware.mbn For modems with separate application and modem firmware (e.g., Sierra):
qmi-firmware-update --device=/dev/cdc-wdm0 --set-download-mode Basic command:
sudo apt update sudo apt install libqmi-utils
opkg update opkg install libqmi qmi-utils