Download HP Color LaserJet 2550Ln Color LaserJet 2550 Printer Firmware Update Utility v.20040930 v.20040930

• Default screenmatch color treatment for non-driver PostScrip
  jobs.
• Enabled to set FONTSOURCE to a downloaded soft font vi
  PJL.
• Cyrillic/­Greek/­Hebrew font settings now available
• Improved memory allocation for complex pages.
• The default I/­O timeout changed to 120 seconds.
• Printing from Mac systems, and printing PDF files, will have a
  improved CMYK color adjustment.
• Calibration will now occur on non-HP refilled cartridge tha
  have the e-label set to "toner out".
• Unexpected Paper Size messages are now bypassed by pressing G
  or Cancel from the Toolbox utility.
• The Supplies Status page will now include the part number fo
  HP cartridges when recognizing a non-HP cartridge installed.

• When using the USB port, the HP Color LaserJet 2550 serie
  software must be installed prior to using this utility.
• When using the parallel port, the HP Color LaserJet 2550 serie
  software does not need to be installed. Connect the 2550 serie
  printer to a PC with the Firmware Update Utility loaded using
  parallel cable.

1. Connect a PC to the HP Color LaserJet 2550 series printer via
   parallel cable
   
   • You do not need to install the HP software for paralle
     upgrades.
   • If the "Add Hardware" wizard starts when you plug in th
     parallel cable, you can safely cancel it.
2. Double click the Flash Update utility.
3. Click 'OK' to begin the process. The utility will go throug
   the following steps
   
   • Close all toolbox and HP software running on the host PC.
   • Upload firmware to printer, at which point the printer light
     will start flashing until complete.
   • Printer will then erase the old firmware and write the ne
     firmware and reboot it.
   • Utility will prompt user to reboot PC (to synchronize th
     printer, restart Toolbox and the HP software)
4. DO NOT POWER CYCLE THE PRINTER during the upgrade process or i
   will leave your printer in an unusable state.
5. Once the utility is complete, it will prompt you to reboot you
   PC and printer to synchronize the printer and the HP Toolbox.
6. The firmware update can take up to 5 minutes to complete
   Please be patient.

1. In order to use USB to update your printer, you must have th
   HP Color LaserJet 2550 series printer software installed on you
   PC
   
   • You do NOT need to have toolbox installed. A driver onl
     installation will work fine.
2. Ensure your HP Color LaserJet 2550 series printer is connecte
   to the USB cable.
3. Double click the Flash Update utility.
4. Click 'OK' to begin the process. The utility will go throug
   the following steps
   
   • Close all Toolbox and HP software running on host PC.
   • Upload firmware to printer, at which point the printer light
     will flash until complete.
   • Printer will then erase the old firmware and write the ne
     firmware and reboot itself.
   • Utility will prompt user to reboot PC (to resync printer
     restart toolbox and HP software)
5. DO NOT POWER CYCLE THE PRINTER during the upgrade process or i
   will leave your printer in an unusable state.
6. Once the utility is complete, it will prompt you to reboot you
   PC and printer to resync the printer and the HP Toolbox.
7. The firmware update can take up to 5 minutes to complete
   Please be patient.

This driver only solution provides DOT4 USB bi-directional
communication functionality on Windows 8 and higher operating
systems.

This driver only solution provides DOT4 USB bi-directional
communication functionality on Windows 8 and higher operating
systems.