User Manual

LS9 User Guide
Libre Wireless Technologies User Guide : LS9 / LS9AD, Ver. 5.3 Page 23 of 75
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Application will parse the XML and verify the Firmware version of LS9 and host MCU
version. If the given versions in the XML are greater than existing version in DUT,
firmware upload process continues. Otherwise it aborts the upload mechanism. The URL
from the <firmware> tag will be updated on ENV: fwupdate_link.
To update the Application Image on to the LS9 module proceed as below.
Step 1. Update the NV-Item fwdownload_xml with the URL of the XML file.
Step 2. Reboot the device,
internet method of firmware update is triggered, when the device successfully
connects to the network.
Step 3. LS9 will compare the present build version (saved in “cast_version” env
item) with <fw_version> of the XML file, and if the <fw_version> is more than that
of present build version, then only Internet upgrade starts automatically.
Step 4. LS9 sends Message-Box 223 to HOST-MCU, indicating availability of
firmware.
Step 5. Module reboots on successful completion of upgrade process.
End --
for more details on internet method of upgrade refer to the following document available
in the portal LibreWirelessTechNote_LS9_Failsafe-Firmware_Upgrade.