Hi,
You may upgrade the firmware via FTP connection to the printer:
From the menu select Reports > Config Report and locate the IP / IPv4 / URL of the printer.
NOTE: Make sure that the printer is not in Power save mode. Also, make sure that any error messages are cleared from the control panel display.
1. Ensure the "Enable folder view for FTP sites" box is checked on the Advanced tab under Tools/Internet Options.
2. Open the browser and type the IP with an FTP prefix such as ftp://192.168.0.90 (this is an example).
3.Use the TCP/IP address of the printer. The display will show a folder labeled Port 1.
4.Open Windows Explorer and navigate to the directory where the .rfu file is located.
5. Drag the rfu file from Windows Explorer to the Port 1 folder
6.Verify the printer’s control panel displays “Performing Upgrade”
NOTE: When the upgrade process has completed the LaserJet will reboot. Once the printer is back online, print a Configuration Page and verify that the new firmware has been installed


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