DFOTA upgrades for Quectel LTE modules

[rcatech]

This seems to be the answer I was looking for:

@daniel

You will need to install qmi-utils which contains the qmi-firmware-update tool. Also make sure that uqmi or modemmanager don't interfere with the modem while updating (ie. remove or disable the wwan interface).

@daniel

You will need to (temporarily) switch the modem to QMI mode for firmware update. MBIM mode can also work as there is QMI-over-MBIM.