Where can I get firmware for my Kyocera printer?

After a power outage I have an error message f245 on my Kyocera FS-C8520MFP. Most online help points at reflashing the firmware. The problem is that I'm on an island and there are no techs within a hundred miles.

I'm good at this stuff. I only need to lay my hands on the firmware. Can anyone make a suggestion?
Gus, April 2016


done
Some interesting reading here:

http://dnet-km.com/eve/forums/a/tpc/f/9126013712/m/1063907287

David, April 2016
link Click here to see other fixes for Kyocera.