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Driver File Name	lj2420_fw_08_120_4.zip
Device Type	HP LaserJet 2400 Series Printer Firmware (Includes Code Signing) for - All Operating Systems - (Must Read README Before Installing)
media Type	Electronic
File Description	IMPORTANT NOTE: “This firmware version installs code signing verification functionality. Firmware signed by HP guarantees the integrity and authenticity of the code; meaning that the firmware was produced by HP (authenticity) and that the firmware has not been altered in any way (integrity). “ ATTENTION: Once this firmware has been applied to your printer or multifunction device it CANNOT BE DOWNGRADED to a previous version of firmware. BACKGROUND: It is important to note that Code Signing Verification functionality has been provided with this version of firmware and will be provided with all future versions of firmware, therefore, the ability to downgrade to a previous version of firmware no longer exists. The Readme file provides specific installation instructions and other information you should know before you perform a firmware update for your HP LaserJet Series printer. Installation instructions are provided for Single and Multiple Printer Updates. The Readme file provides specific installation instructions and other information you should know before you perform a firmware update for your HP LaserJet Series printer. Installation instructions are provided for Single and Multiple Printer Updates. The Readme document provides specific update, installation and troubleshooting information. For additional information on the device features, refer to the online user guide found on the Windows Printing System Installer CD-ROM that came with your printer or at hp.com. What is included in a Remote Firmware Update (RFU)? The HP LaserJet Printer Remote Firmware Update file available from the HP web site contains firmware for the printer, embedded JetDirect (if applicable), HP paper handling accessories used with the device in one convenient download file. When the Remote Firmware Upgrade file is sent to the HP LaserJet
Release Date	Jan 13, 2012
Update Date	Dec 06, 2015
Version	08_120_4
OS:	SAP etc..
Download	Download Free Now

NOTE: Please be aware that an update in some circumstance may require ten minutes or more to complete.

Upgrading firmware to a single device
You can send an .RFU update to a device at any time; the device will wait for all I/O channels to become idle before cycling power.

Please print a configuration page prior to performing any firmware update. To print the configuration page:

1. Go to the printer's or MFP's control panel.
2. Press the "Administration" Icon on the touch screen.
3. Select the "INFORMATION" selection on the touch screen.
4. Select "CONFIGURATION/STATUS PAGES".
5. Select "CONFIGURATION PAGE".
6. Select the "Print" button.

On the printed CONFIGURATION page look in the section marked "Device Information" for the firmware date code. The firmware date code will look something like this: 20040322 48.001.0

NOTE: If the firmware
Enhancements and Fixes provided with this Firmware revision, 20120113 08.120.4

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NOTE: ALL IMPROVEMENTS WITH PREVIOUS REVISIONS OF FIRMWARE ARE INCLUDED WITHIN THE MOST CURRENT REVISION
This lj2420_fw_08_120_4.zip driver file fit for these kinds of hp product: