Problem with PortServer TS4 RS-232 firmware


I recently bought a PortServer TS 4 RS-232 and looking for a recent firmware version,
I have put one older than the one it was bringing, specifically the Portserver had the version 82000747_X in the factory and accidentally I put the version 82000747_W1, where can I download version 82000747_X to put it back?

Thanks greetings