Comment 5 for bug 732450

The problem is that two firmware uploads happened simultaneously, one byu foo2zjs, another by HPLIP. Probably you have installed the firmware file twice, once with hp-plugin (part of HPLIP, the program which pops up automatically) and once with the command line program getweb (part of foo2zjs).

To make your system consistent again, so that updates work correctly, you need to re-install foo2zjs, but to prevent it from concurrent uploading of the firmware, you need to remove the second copy of the firmware. To do so, run the following command in a terminal window:

sudo rm /lib/firmware/hp/sihp1018.dl

or

sudo rm /usr/share/foo2zjs/firmware/sihp1018.dl

The first command is for newer versions of foo2zjs, the second for older versions. Please tell whether there was really a firmware file at at least one of these places. If so, re-install foo2zjs via

sudo apt-get install foo2zjs

Now turn off the printer and turn it on again. When the printer stops making noise try to print. Does it still work? If not, uninstall foo2zjs again as described in comment #3 and turn off and turn on your printer.

If there are no firmware files to remove at the given places, do not install foo2zjs again.

Please tell us your results, so that we can apply measures to avoid this bad interference of two programs trying to fulfill the same task.