Does anyone know where I can get the latest firmware/drivers for my Plextor PX-800?
drivers are part of the operating system, so there is nothing you can download from anywhere.
For firmwares, You may check this thread: http://club.myce.com/f43/post-new-firmware-tool-announcements-here-186912/ please.
Normally, firmware updates should be available from the official website www.plextor.com
For your PX-800A, you’re out of luck: apparently there seems to be no firmware update available.