Missing Keys for volume up/down buttons
For the past three months, since install, using the control center remote I have been able to use the Volume up and down keys to control TV volume.  Two days ago this stopped working and the visual from the remote screen that shows the volume buttons are active disappeared.  I can remap the volume commands to the info button ("INFORMATION": "KEY_VOLUP") and that works but it seems that the mapping to the physical iPhone volume buttons has disappeared.  I can't find any documentation on how to map these side buttons again.  Using "VOLUME_UP": "KEY_VOLUP", "VOLUME_DOWN": "KEY_VOLDOWN" doesn't appear to work.