Some applications require a minimum printer firmware level to operate correctly.
Open a web browser, and then type the printer IP address in the address field.
Click Settings > Device > Update Firmware.
Do either of the following:
Note: To download the latest firmware, go to www.lexmark.com/downloads, and then search for your printer model.
Browse to the flash file.
Note: Make sure that you extracted the firmware zip file.
Click Upload > Start.
Updating the printer firmware to latest version.
Steps on how to update the printer firmware via FTP (File Transfer Protocol).