Kodak Esp C310 Printer Error 3513, Update Firmware

[CW1]

Hi,
Looking at a friend's printer that has above error, Printhead loose or missing.
New ink has been installed, I've removed the printhead & cleaned everything. Printer settings show current Firmware Version is RC4.2. Kodak help says to update the firmware, which I downloaded but didn't have an option to Save As so, not knowing what the file's called, I can't find it.
Even if I could find it, how do I update the printer ? Only have limited options when right clicking the printer in Devices & Printers under Control Panel :(

[CrapAtCryptics]

The latest driver I can see doesnt specifically say it compatible with Win 10 assuming you are on that. As the printer is quite elderly it would be a lot less fuss to but a 3 in 1 from Canon for about £30 assuming you are in the Uk.

[CW1]

Thanks, I did wonder about WIN10 as I noticed that too but I've finally updated the firmware using a different PC (still WIN10) but it hasn't cleared the error :(
They only use it for printing the odd photo (that's apparently the problem, they don't use it enough !) & don't have access to a PC for that & the only one they found was a Canon but £100. I've found one on Gumtree for £9 ;) It's 30mins away though, so I'd better get going ...