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Lexmark CX421

Lexmark CX421

Updating the printer firmware using USButil or USB flash utility

Issue description

Local USB connections to a Microsoft Windows computer allow firmware updates via the USB Flash Utility.

Before starting

Do the following before updating printer or MFP firmware:

  • Download the .zip file to an easy-to-find location such as your Windows Desktop.
  • Unzip the file to your Windows Desktop or a destination directory that is easy to locate.
  • Power off your printer and then back on to clear any error messages and to bring the printer back to READY.
  • Verify your USB connection to the printer, and make sure that the printer is recognized by the USB host controller.

Note:  You see connection notifications in the notification area of your task bar, and Microsoft's Add New Hardware Wizard may appear. Cancel these notifications.

 

USB flash utilities

USB Flash Utility has a GUI-based interface which shows a progress bar.

Procedure

  1. After extracting both the USB flash utility and firmware file, double-click on the USBf lash Utility icon.

  2. Confirm that the correct printer model is listed under Select Printer From List. If not, click the drop-down arrow to locate and select the correct printer.

  3. Browse to the firmware file directory.

  4. Select the required file and click Open.

  5. Confirm that the correct firmware file is listed under Enter Filename To Flash To Printer.

  6. Click Start.

  7. Observe the progress bar to completion.

  8. Observe the printer LEDs or LCD for flash status. A series of periodic LED light sequences is seen or a specific message appears on the LCD.

  9. After completion, the printer should return to Ready.

Click here for an image sample.

LEGACY ID: SO4667

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