Upgrade Firmware on Quectel LTE Module

Is there a way to upgrade the firmware of a Quectel LTE Module that is connected to an OpenWRT router?

Quectel provided the QFirehose application for linux to me, but I am unsure how to use / compile this for OpenWRT.

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Can you share this application please?

Having the app alone is not sufficient, you also need the firmware file for your modem model. Try to contact Quectel directly.