• Rollback: previous firmware v1.1.4 images retained in A partition.

    • A wltfsm-146gn firmware update often resets all settings to factory defaults. You will need to reconfigure:

    Always keep a backup of the previous configuration file (e.g., config_backup.xml).

    A: Some newer revisions support OTA via MQTT or HTTP, but the UART method is more reliable. Check your data sheet for "OTA-Capable" flag.