Question about HP LaserJet 4240n Card Printer

1 Answer

My HP LasertJet 4240n will not do anything or allow anything. Its control panel says: Downld file now RFU LOAD ERROR RESEND RFU OVER PARALLEL PORT If I hold the Checkmark button when it's starting up I can get it to give me some menu items, like "Select Language", no matter which I pick it goes to the RFU error message. I can't ping it at the IP I specified for it (long ago) and I can't FTP to it. So, how do I clear the RFU error message so I can fix it? How do I get it back to having a good firmware?

Posted by on

  • Eli Doran Mar 22, 2011

    Thank you for the starting tip. :)

    I can read the message and understand what it is saying.

    I have the firmware ready to install.

    I know how to FTP to it and push the firmware file.

    However, now that this message is showing, the printer does *not* respond via the network. I can *not* ping it at the IP it has had for the last few years. I can *not* access its webadmin page via HTTP.

    When I start it and hold the Checkmark button it will give me some menu options, and no matter what I select, it goes to the RFU error.

    I found some instructions to clear the RFU error message so it will start responding and allow the firmware install. However, they don't work. It said to hold Stop while it was starting up. That did nothing for me. Holding Checkmark does bring some menus, but, now the ones with "Clear RFU Error".

    So, the installation instructions do not address the issue I am having. No where does it say "If you currently see a RFU error message on the control panel, then do this....", Or, "If printer is no longer responding to FTP, HTTP... then do this ..."

  • Eli Doran Mar 22, 2011

    This was the solution.
    I had to get 3 computers to get it to work because my first one did not have a parallel port, the second didn't work, fortunately I tried a third and it worked fine.
    * installed driver on machine
    * added printer
    * did the copy command to put the file onto the printer
    * it did its thing and I was all set.

    Thank you very much



1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • HP Master
  • 19,396 Answers


Download and reinstall the firmware. That is what the printer is asking for.

First download the firmware here: Firmware. The link is the standard firmware download for 42xx up to 4350, USA version. It covers the 4240n.

For installation follow thoroughly the instructions on this page.



Posted on Mar 22, 2011

  • Ginko
    Ginko Mar 22, 2011


    When you get the error message you need to update using parallel port, as explained here:
    Remote firmware update through a local Windows port.

    Get a parallel cable.
    Download and install printer drivers if needed (install as local printer).
    Do the upgrade using LPT1 connection.

    If the computer does not have parallel port, find an older computer, or get an adapter like the ones in this page.



  • Ginko
    Ginko Mar 22, 2011


    Good to know it's done!

    All the best.




1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Send RFU file

we can't instal the driver because computer cant sport the usb

Feb 29, 2012 | HP LaserJet 5200 Printer

1 Answer

What can I do to my printer is sending me this message "Downld file now inflate failure Resend RFU over parallel port"

For whatever reason your printer is trying to do a firmware upgrade and it isn't working. If this came out of the blue, you may have to replace the formatter. RFU = remote firmware upgrade. If you caused the problem while trying to upgrade the firmware, try it again

Sep 02, 2011 | HP LaserJet 9050n Printer

1 Answer

Hp 5550 color laser printer display "downld rfu error over parallel port" how can i get a solution? and what is the cause? thanks

RFU = remote firmware upgrade.
Appears like someone tried to upgrade the firmware.
While the firmware was being downloaded, something interrupted the process. For example somebody tried to use the printer, you had a power problem, your internet went down etc, etc.
You are going to have to try the firmware upgrade again.
If you can't get passed the RFU error, you will probably have to get the formatter replaced.

Aug 19, 2011 | HP LaserJet 5550 Printer

1 Answer

Hi i have an hp CLJ cp3505n it has sopped working, error downld file now send rfu upgrade

Please see my tip. It was written for the CM2320 but the procedure is basically identical for all HP products.

May 07, 2011 | HP Office Equipment & Supplies

1 Answer

How to remove downld file now send rfu upgrade on usb dev port error in hp laser jet p4015 printer.

Hi sachin_kanoj !
If it's a unwanted download , it's a malware . You will get rid of it by downloading and launching Malwarebytes from :
If it's something you volontarily downloaded and installed in your printers software , you need to go to the
Control Panel \ Programs , delete the software and disconnect your unit .
Reboot . Reinstall sofware and reconnect the printer .
I hope this will help .
Best regards ,
fanaudi .

Feb 23, 2011 | HP LaserJet P4015N Printer

3 Answers


install printer Driver
change print port to "Virtual printer port for usb"
use usb line
down load the right firmware .rfu file
in CMD mode,type:
copy /b firmwarefilename.rfu \\pc name\printer name
it will be down
good luck!

Nov 26, 2010 | HP LaserJet 4345mfp Printer

1 Answer

Download file now RFU LOAD ERROR

Upgrading Printer Firmware

HP Jetdirect firmware images have an extension of *.dld while the printer
firmware images have an .rfu extension.Once imported into the repository, the files physically exist under the following location on the HP Web Jetadmin server:

C:\Documents and Settings\NetworkService\Local Settings\ApplicationData\Hewlett-Packard\HP Web Jetadmin\WjaService\config\FirmwareUpgrade

check the document from the hp
Upgrading Printer Firmware

Jan 05, 2010 | HP Office Equipment & Supplies

2 Answers

RFU load error

I have a printer HP Color Laser Jet 5550' i cont print when i on the perinter ther 59 er--co is come on printer screen and the printer can not work .waht sould i do it cont rest too plase

Feb 27, 2009 | HP LaserJet 5550 Printer

3 Answers

Printer Froze and Have Download Message

Downld File Now

Aug 13, 2008 | HP LaserJet 5550 Printer

Not finding what you are looking for?
HP LaserJet 4240n Card Printer Logo

Related Topics:

338 people viewed this question

Ask a Question

Usually answered in minutes!

Top HP Office Equipment & Supplies Experts

Doctor PC
Doctor PC

Level 3 Expert

7733 Answers

Ben Johnson

Level 3 Expert

685 Answers

mukhtar21 shaikh
mukhtar21 shaikh

Level 3 Expert

2022 Answers

Are you a HP Office Equipment and Supply Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides