Got my RX-V473 after getting poisoned by a friend's Aventage series. Used to have a cheap amp but has not revisited home theatre systems since it died a long time ago. Was pleasantly surprised how far AV receivers came along.

Hit the same error when updating firmware to 1.14 from the receiver unit itself, downloaded firmware into USB drive and it works.

Love DLNA - playing music from my WDTVLiveHub.
Minor detail :
Net Server mode to play music > change to any other scene/input source > change back to net Server. It gets out-of-sync and keeps waiting on "loading" to display music list.
Hitting "Net" to cycle through Net radio, airplay and back to Net Server solves it.

IR Remote control seems to drain new Energizer batteries in 2 days. Swapped 3 sets of new batteries. Got the remote control changed from the shop, we'll see how this one goes but I suspect I just got a lemon.

I keep getting "Error - Too noisy" when trying to auto calibrate with the YPAO mic, even at night with the ceiling fan off. Chose to proceed anyway and then tune by ear.

Once the initial setup is out of the way, I'm enjoying it.
Went out to get the NS-SW210 a week later. Although auto-calibration sets the crossover at 40Hz, I found it to be better at 110Hz. After which looking at articles online looks like that matches my small to mid size speakers.

The higher end models like the 673 has YPAO RSC (Reflected Sound Control) which also measures reflected sound and compensate for areas where you have wall on left and none on right.
The 473 doesn't have RSC, so it's definitely not accurate unless you have a rectangular room.

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Added on December 5, 2012, 10:37 pmLike the folks said, you can turn on test tones which cycles through each speaker & subwoofer.
Under Setup > Speakers > you have:
Configuration
- speaker size
- sub crossover freq
- extra bass (you need to set front speakers to Large)
distance
level

Go download the manual, I finished reading it before going into the store to test it out.

This post has been edited by plasma: Dec 5 2012, 10:37 PM

Am also trying out a lot of 6ch FLAC. Just realized after reading through a developer blog that DLNA does not support lossless audio transfer. No wonder when I use Net > Server to play the FLAC files in "Straight" mode, it still shows stereo. DLNA forces on-the-fly transcoding of the audio.

I'm using my WDTVLiveHub media player to play it via HDMI instead and I'm hearing 5.1 now.

Awesome! Yea, the next consideration is a NAS.
Have been eyeing a few. Saw SmartStor NS2600 for RM499.
Obviously Synology is best.

Only the US and Canada model of the v473 has impedance adjustment.

You can always reuse speakers but you'll need 5 speakers + 1 subwoofer to get 5.1