Dug this up. Here you go.
First:
1) Select Aux
2) Hold Setup 2 flashes
3) Enter 01376 2 flashes
Next:
1) Select Aux button
2) Hold SETUP, 2 flashes
3) Type 994, 2 flashes
4) Tap SETUP
4) Enter 00173
5) Tap CABLE, then button to be programmed (triangle is a good one), 2 flashes
Make sure on step 5 you hit the Cable button first before triangle.
Congratulations, you can now skip 30 seconds ahead on recordings using the triangle button (or whatever you chose).