No more sound after firmware upgrade WD LIVE PLUS

Hello,

After upgrading the last firmware, I can see movies but there is no more sound. I have an optical cable plugged as before when it worked. AV is working fine with my blu ray player, cable is fine too, I tested it… Even if I change the stereo setting in the menu with others it doesn’t work.

I tried to reboot with factory settings, to unplug from the wall and replug , impossible to get sound anymore.

Can anyone please help me ? 

thanks,

Thread moved to WD TV Live & Live Plus Media Players: Firmware.