Yamaha support sent me the following firmware upgrade instructions:
(okay, I'm pissed... the counter-productive forum rules prevent me from pasting this link, so I have to make it harder to use.)
You most likely need to update the receiver's firmware. Start by downloading the latest update from our website:
https yamahafiles.egnyte.com /dl/abRIhBqr70
Next, insert a USB flash memory stick into your computer, and format the drive to FAT32. This will completely erase the drive, so be sure to save any important documents you might have stored on it. On a windows machine, you can right-click the drive and select "Format". Check the "quick format" box, and set the file system to FAT32. After formatting, drag "R0309-0196.bin" onto the drive. You can then eject the drive and bring it to the receiver.
Here is the process for a USB update:
1) Turn off the receiver
2) On the front panel, press and hold 'STRAIGHT', and turn on the receiver while holding the button
3) Press the 'PROGRAM' L/R button until "Update USB" is displayed
4) Insert the USB, then press 'INFO' to begin the update.
The update will take approximately 15 minutes to complete. Wait until the receiver shows "UPDATE SUCCESSFUL". You can then power cycle the receiver and disconnect the USB. Let us know if this does not fix it.