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Updating the modem software
ETM supports over the air (OTA) updates for the following software, using parameters set in the
configuration file:
• Host
• Kernel (Quectel BG96 module operating firmware)
• ETM application
• Configuration
For more information, see
Using the Quectel BG96 module configuration file
Updating host software
ETM is preconfigured with the URL for the host software. The host must request ETM to check for
updates. If an update is available, ETM will download it into flash memory and send a URC to the host,
indicating that new software is available. The host then reads the software image in chunks, using AT
commands. A checksum is provided to ensure the copy from ETM to host has completed without
errors.
Updating kernel, ETM application and
configuration software
Trigger updates to the modem kernel, ETM application and configuration using either the host, cloud
IoT service, or SMS.
The URL used to download the images is set in the ETM configuration file. In order to apply updates,
ETM must reboot. For more information, see
update_autoreboot
in the configuration file.
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Eseye-enabled Quectel BG96 module Developer Guide v1.8
Updating the modem software