Comments on: Fixing the dreaded “RFU Load Error/Send RFU Upgrade” on CP3505 Using a Mac

By: devin

devin — Sat, 04 Sep 2010 18:13:13 +0000

This is the purpose of this post. Go ahead and follow the directions here to install an updated firmware on your printer.

By: yaan george

yaan george — Sat, 04 Sep 2010 13:48:48 +0000

I use to like HP products but I am indeed discouraged for sometime now when “down file now SEND RFU UPGRADE” appeared on my hp lasserjet CP3505n printer.

What may do to get my printer back to normal? please made it known to me in a jeffy.
Thank you and God bless you.
D.D.George

By: devin

devin — Wed, 11 Aug 2010 04:11:17 +0000

As a reply to the 2420 question, when you have a bad firmware, you’re really out in the dark until you can get that up and running again. Resetting a printer involves having a good working firmware. Your only other option is to buy a new firmware chip from HP (or other sources).

By: David Milne

David Milne — Thu, 22 Jul 2010 19:22:39 +0000

Absolutely brilliant! Devin Collier you are a star. Moral of the story is HP should hire you, or HP should give up making printers!

By: Jorgen

Jorgen — Mon, 19 Jul 2010 19:28:00 +0000

I have also problems with a HP Laserjet 2420n after I ran the upgrade received in an e-mail with the text:

Routine Driver Alert Jun 24 2010
HP LaserJet 2400 Series Printer Easy Firmware Update Utility – Windows Operating System – (Must Read README Before Installing) (ver 08.113.0.I35128)
Products: HP LaserJet 2400 Printer series
OS: Windows,Other Legacy OS

Description: HP LaserJet 2400 Series Printer Easy Firmware Update Utility – Windows Operating System, version 08.113.0

I have the message “Downld file now RFU LOAD ERROR”. I have rerun the upgrade three times via the USB connection. I have deinstalled and reinstalled the printer. Nothing helps.

Please, does anyone know of a kind of “set to factory default” kind of reset for the HP laserjet 2420n?

By: Demetri from Leeds

Demetri from Leeds — Wed, 07 Jul 2010 17:53:47 +0000

Spot on instructions for sending the RFU file.
However, now comes up with an error 68.1 Permanent Storage Full. It still seems to print out OK but says that the job cannot be stored – I’ll be investigating further but thanks for putting up such useful and clear guidelines

By: Chris

Chris — Mon, 05 Jul 2010 17:21:57 +0000

Thanks so much – did this using a PC running XP – I was basically doing the update the same way, but it wouldn’t send until I changed the printer type to something else – in this case an HP 4100. Why is that?

By: devin

devin — Mon, 07 Jun 2010 11:32:19 +0000

To reply to the previous comment, your firmware is physically bad. When it attempts to load like that and can’t read all the memory, the formatter needs to be replaced. It’s a known HP defect.

By: Eddy

Eddy — Mon, 07 Jun 2010 02:06:23 +0000

Please, i have the same problem with alex. it keep stuck in 64 kb/23mb. if i change the advance setting of print directly, the hp firmware update became not responding. what should i do??? do you have other solution that i can use. it’s stress me out.

By: Cindy

Cindy — Tue, 18 May 2010 20:43:26 +0000

Thank you for posting this…you saved us! We almost spent $619 on a new formatting board. Glad we saw this first!