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Lexmark MS331

Lexmark MS331

Updating firmware

Some applications require a minimum device firmware level to operate correctly.

For more information on updating the device firmware, contact your Lexmark representative.

  1. Open a web browser, and then type the printer IP address in the address field.


    • View the printer IP address on the printer home screen. The IP address appears as four sets of numbers separated by periods, such as
    • If you are using a proxy server, then temporarily disable it to load the web page correctly.
  2. Click Settings > Device > Update Firmware.

  3. Do either of the following:

    • Click Check for updates  > I agree, start update.
    • Upload the flash file.
    • Note:  To get the latest firmware, go to, and then search for your printer model.

      1. Browse to the flash file.

        Note:  Make sure that you have extracted the firmware zip file.

      2. Click Upload  > Start.

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