EVER here of a MATSHITA DVD-RAM UJ-850S?

Hi, I have lost the firmare for my UJ-850S Is there any chance you could email it to me (if you still have it) As it is impossible to find on the Web

Hi and Welcome!

you can’t lose the firmware of your drive, since it is stored on a chip in the drive itself.
Would you please mind describing your problem further?

Apart from that, any support for Panasonic optical drives is provided by the computer manufacturer.

Michael