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Updating LG290P Firmware

  • EVK:
  • Facet mosaic:
  • Postcard:
  • Torch:

The LG290P is the GNSS receiver used on the RTK Postcard. The following describes how to update the firmware on the LG290P.

  1. Download the latest LG290P firmware. As of writing, the LG290P firmware is v4. See the RTK Postcard repo for the latest firmware.

  2. Download and install QGNSS. QGNSS is the software created by Quectel to configure and view output from Quectel GNSS modules.

    Select the COM port and baud rate
    Select the COM port and baud rate

  3. Open QGNSS and select the COM port for Port B of the CH342 and set the baud rate to 460800, then press 'OK'

    Open the Firmware Download window
    Open the Firmware Download window

    Starting the Firmware Update Process
    Starting the Firmware Update Process

  4. Select the firmware to upload and press the start arrow. The update process will wait 20 seconds for the LG290P to be reset before timing out.

    Resetting LG290P
    Resetting LG290P

  5. Reset the LG290P. From the main menu navigate to System 's'->Hardware 'h'->LG290P reset for firmware update '13'. This will reset the LG290P and allow the bootlader to begin. If more than 20 seconds have gone by, restart the upgrade process in QGNSS and then reset the LG290P again.

  6. The update process takes a little over a minute. Once completed, close QGNSS and power cycle the RTK Postcard.

    Firmware version shown in System Menu
    Firmware version shown in System Menu

  7. Upon power-up, the firmware will be updated. Open the System Menu to confirm the firmware version.