NVIDIA Shield
To setup an NVIDIA Shield with Flirc, use the Flirc GUI's NVIDIA Shield Controller as seen below. These are the basic controls for media center operations and support was provided directly by NVIDIA for compatibility.
Suspending Shield
To suspend the shield or put it in a sleep state, use the Media Keys controller and record the Wake/Suspend key as shown below.
NVIDIA Settings
After pairing, if flirc doesn't work, then ADB Debugging needs to be turned off and or USB HD storage, the shield could be disabling the USB port for normal operation.