Here is the terminal window output when I do that command:
:~$ hp-firmware -i
HP Linux Imaging and Printing System (ver. 3.9.2)
Firmware Download Utility ver. 2.4
Copyright (c) 2001-9 Hewlett-Packard Development Company, LP
This software comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to distribute it
under certain conditions. See COPYING file for more details.
Using device: hp:/usb/HP_LaserJet_1018?serial=KP0SYPQ
Here is the terminal window output when I do that command:
:~$ hp-firmware -i
HP Linux Imaging and Printing System (ver. 3.9.2)
Firmware Download Utility ver. 2.4
Copyright (c) 2001-9 Hewlett-Packard Development Company, LP
This software comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to distribute it
under certain conditions. See COPYING file for more details.
Using device: hp:/usb/ HP_LaserJet_ 1018?serial= KP0SYPQ
error: Device busy: hp:/usb/ HP_LaserJet_ 1018?serial= KP0SYPQ
error: Error opening device (Device not found). Exiting.
I should mention that the printer is connected and turned on.