Hard to tell with no model number grin.
A friend gave me an old VHS/DVD burner (set-top-type),
and when I checked, I had to locate, D/L, and burn two
ISOs (CDs).
One re-did the unit OS, and the other flashed the firmware.
(Surprised me it had both...)
So you can't tell until you search
I have a friend with a old TV, I think a Panasonic, one of those with
a built in VHS DVD player deal. I think it has a corrupt clock BIOS.
It keeps turning off after a few minutes of play, and then it will
turn on by itself in the middle of the night. It must be the sleep /
alarm feature is