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Updating LG290P Firmware

  • EVK:
  • Facet mosaic:
  • Postcard:
  • Torch:
  • TX2:

The LG290P is the GNSS receiver used on the RTK Postcard and TX2. The following describes how to update the firmware on the LG290P.

  1. Download the latest LG290P firmware. As of writing, the LG290P firmware is v2.01. 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.

  3. Open QGNSS and connect to your device by, selecting LG290P(03) from the drop-down menu for Model and selecting the COM port of the CH342 based on the device (as listed below). Then, set the baud rate to 230400 and press 'OK'.

    • Postcard: Port B
    • TX2: Port A

    Select the COM port and baud rate
    Select the model, COM port, and baud rate

    Tip

    If the baud rate doesn't work, users may need to factory reset the RTK everywhere firmware to reconfigure the baud rate of the LG290P to the default settings.

  4. To upload firmware to the LG290P, navigate from the Tools drop-down menu and select the Firmware Update option (Tools > Firmware Update).

    Open the Firmware Download window
    Open the Firmware Update tool

  5. Select the firmware file to upload, by clicking on the button. (This should be the *.bin file, located is inside the *.zip file that was downloaded in Step 1.)

    Select the firmware file
    Select the firmware file

  6. Before the firmware can be uploaded, the LG290P must be reset to synchronize the module with the firmware upload process. Click on the reboot button in the toolbar.

    Resetting LG290P
    Reboot the LG290P

    Tip

    For the TX2, we recommend users relocate the Firmware Update window as close to the reboot button as possible. In our experience, the start button must be pressed immediately after pressing the reboot button; otherwise the process fails.

  7. Press the start arrow in the Firmware Update window immediately after clicking the reboot button.

    Starting the Firmware Update Process
    Start the Firmware Update Process

    Tip

    If you are struggling to get the timing correct between the two buttons, here is an alternative solution. The firmware update process provides a 20 seconds to synchronize with the LG290P, given that you can reset the LG290P externally from the QGNSS application. Using the serial configuration method, use the main menu navigate to System 's'->Hardware 'h'->LG290P reset for firmware update '13'. This will reset the LG290P and allow the bootloader to begin. If more than 20 seconds have gone by; click the start arrow in the Firmware Update window again, then reset the LG290P from the serial configuration menu.

    Resetting LG290P
    Resetting LG290P

  8. 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

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