We have our new ATV3 connected via. HDMI and optical audio. Both HDMI and optical audio cables are connected to our amplifier, which is then in turn connected to our TV. The ATV3 isn't allowing 1080p as a selection, only 720p. TV: Philips 42PF5521D/10 Amp.: Yahama HTR-2064 Our Xbox 360 and WD TV Live box work fine set to 1080p, and are connected the same way. We have also plugged the HDMI cable directly into the TV and restarted the ATV3 box, still no 1080p option. Any ideas?