Yesterday i came across a printer that got stuck when i tried to upload new firmware to it.
Much to our annoyance, after a restart, the printer mentioned the following:
RFU LOAD ERROR, SEND RFU UPGRADE
Downld file now, SEND RFU UPGRADE
For the rest it did nothing.
After several numerous attempts to try uploading new firmware, i came to the only solution that worked. And i found it right here.
What you will need is an Linux (Ubuntu) pc. You can safely use a bootable Ubuntu cd-rom. Start your computer and fire up Ubuntu. Do not connect the printer yet.
- Switch off printer
- Connect the the USB from the printer to the Linux machine.
- Switch on Printer
- It will try and find the drivers. Ignore this alltogether.
- look in /var/log/messages for the device file that linux assigned to the USB Printer . In my case it was /dev/usblp0
- download the latest FW (the RFU file) for your printer from HP website
- copy the .rfu file to the printer using sudo cp [the name of the rfu file].rfu /dev/usblp0
(if you are root you don't need to sun sudo just cp)
- If correctly, you will see on the display of your HP printer that it is accepting and downloading the firmware.
- Wait until the file is copied and than the upgrade will take place.