problem with Samsung C1860

[t-rex88]

My printer does not want to "print from"/"copy to" flash drives. 
Led flashing for a long time and the "device is not supported". 
But sometimes it all starts to work. Print is to...
Since Windows 10 works. With Linux/Ubuntu 18 is not works. 
Not at all. Half of the functions does not work at all. 
I suspect the firmware/software. How? and how to update the firmware? Drivers to.
Sorry from my english(google translit)

[Printer_S]

Hi t-rex88

To solve the issue with the flash drive, you can try clearing the meory: 

a) Entering Tech Mode
To enter the service mode, press 1,2,3 number keys simultaneously. When the password dialog box appears, enter “1934”
and press the “OK” button.

Once you are in Tech Mode select the options

Test Routine > Others > Memory Clear > "Country"

Regarding the LINUX drivers you can try with the one that we have in our web page:

https://ftp.hp.com/pub/softlib/software13/printers/SS/SL-M4580FX/uld_V1.00.39_01.17.tar.gz

In case that the driver above does not work, it's possible that you may need to contact a LINUX developer to get extra help since HP does not update the drivers for LINUX at all. 

Regards.