Hi, I believe someone reported the same issue earlier in the thread and I wanted to bring it to your attention as well. When my UltraHDMI is plugged into my A/V receiver, the HDMI Audio Return Channel will not work. When it is unplugged, the ARC works just fine. I've had my receiver since the first half of this year and could never get the ARC to work with my Smart TV's Netflix (had to resort to using optical audio), but I remembered that another member had this issue and I just unplugged my N64 and got the ARC working for the very first time.
Samsung UN40H6350AF Smart TV (latest firmware)
Anthem MRX1120 receiver (latest firmware)
UltraHDMI N64 firmware 1.03
Does anyone know if 1.05 fixes the ARC issue?