You will need to append the following to the /etc/sane.d/snapscan.conf file on your system if it's not already there. Note that some (or all) of these may already be present, if this is an upgrade of iscan-firmware, or you've previously had it installed. You will have to uncomment the entry for your scanner. #-------------- EPSON Image Scan! for Linux Scanner-Firmware -------------- # Perfection 2480/2580 PHOTO (esfw41.bin) #firmware /usr/share/iscan/esfw41.bin # Perfection 3170 PHOTO (esfw32.bin) #firmware /usr/share/iscan/esfw32.bin # Perfection 3490/3590 PHOTO (esfw52.bin) #firmware /usr/share/iscan/esfw52.bin # Perfection 4180 PHOTO (esfw43.bin) #firmware /usr/share/iscan/esfw43.bin # Perfection 4490 PHOTO (esfw54.bin) #firmware /usr/share/iscan/esfw54.bin # Perfection V10/V100 PHOTO (esfw66.bin) #firmware /usr/share/iscan/esfw66.bin # Perfection V350 PHOTO (esfw68.bin) #firmware /usr/share/iscan/esfw68.bin # Perfection V200 PHOTO (esfw7A.bin) #firmware /usr/share/iscan/esfw7A.bin