Does anyone have the hex codes for the Roku 3 "InstantReplay" button?

The remote for the Roku 3 only transmits via bluetooth/wifi, but it still receives IR.
All of the Roku 2 IR codes work with the Roku 3, but these older remotes don't have the new "InstantReplay" button so you can't use them to learn this button.
If I can get the hex codes I can send them to Logitech and get the Harmony database updated for the Roku 3. The "InstantReplay" button simply rewinds the current program 5-10 seconds.