Thanks for your reply.
1) I don't understand your first line : "installed the HD audio version of the fw"
Few fw existed?? How can I know what's firmware in V4.0.4 I use?
2) Med is connected with hdmi v1.4 to my Denon AVR-1911 and my devon with the same cable to my TV ( good answer? )
3) I don't know CEA-EDID, I know that's the amp is passthrough but I used my amp switch on with my mede8er
Sorry for my bad english and my bad understanding ^^
EDIT : I've just seen on the forum there are two firmware in 4.0.4, if I upgrade with 4.0.5 HD audio will be include?