Comment 6 for bug 543177

Kevin, how did you install the firmware on your computer? Did you run foo2zjs'

sudo getweb 1020

or did you run HPLIP's

sudo hp-plugin (or sudo hp-setup)

Both methods download and install the firmware, but to different places and different UDEV scripts will be used to load the firmware into the printer. The HPLIP solution loads the firmware with 3 seconds of delay, so that any probing by CUPS happens before loading the firmware. foo2zjs' method loads the firmware immediately and so it comes to problems.

Run the following commands in a terminal window:

rm /usr/share/foo2zjs/firmware/*
sudo hp-plugin

Let HP's plugin get installed. Then turn off and turn on the printer, is it accessible? If not, remove your print queue and let it get auto-created again by turning off and turning on the printer again.