Qmi-firmware-update

sudo qmi-firmware-update \ -d /dev/cdc-wdm0 \ --update /path/to/firmware.bin \ --dlpath=/dev/ttyUSB2 # Often needed for Quectel emergency port

Use this guide at your own risk. Always verify modem model and firmware compatibility before proceeding. qmi-firmware-update

sudo apt-get install libqmi-utils

sudo qmi-firmware-update --update -d [DEVICE_ID] firmware.cwe config.nvu Using a specific device node: qmi-firmware-update