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Firmware update

From firmware v1.3.0 on, firmware updates are performed from the dedicated Firmware Update tab in the web interface (older firmware hosted the same controls at the bottom of the Configuration page). Download the latest firmware from the Downloads section on the Uberlogger website: www.uberlogger.com/#downloads.

A firmware release ships as a zip file containing three binaries that must all be flashed together:

  • ota_main.bin — ESP32 main application (web server, logger logic, REST API).
  • ota_support.bin — STM32 support-chip firmware (ADC sampling, digital inputs, RTC).
  • ota_filesystem.bin — SPIFFS filesystem image containing the web-interface assets (HTML/CSS/JS).

To update the firmware, follow the next steps:

Step 1
  • Extract the zip with the firmware files into a directory.
  • In the web interface, open the Firmware Update tab.

Step 2
  • Select the ota_main.bin, ota_support.bin and ota_filesystem.bin files for the matching inputs.

Important

Before continuing, make sure that you do not interrupt the update process or power-cycle the device! This may brick your Uberlogger.

Active logging is paused for the duration of the update.

Step 3
  • Click Upload & update and confirm the message with OK to start the update process.

  • The page shows live per-file progress bars while each binary is uploaded and flashed.
  • The green LED on the Uberlogger blinks fast while the update is in progress. The full update typically takes around 60 seconds.
  • After flashing, the device reboots automatically. The page polls the device for up to two minutes and reports success as soon as it comes back online.
Step 4

  • The page reports Upload complete! (or an equivalent success message) once the device is back online with the new firmware.
  • Check that the green LED is constantly on again. If the device fails to come back online within the polling deadline, power-cycle the Uberlogger and verify the firmware version under the System sub-tab of the Configuration page.
Note

If a previously configured web-interface login is enabled, the browser may prompt you to re-authenticate after the device has rebooted.