Download " Firmware Ver. 1.16.13" from the link above (_ WD TV Live Streaming Media Player _).
Unzip the files to the root of a USB PEN.
Turn On WDTV and make sure Setup->System->Auto Detect New FW = ON
Put the USB pen in WDTV and a new big orange root menu option called “New Firmware” should show up.
Press it.