SixStringFlyboy

If by Factory Reset, you mean all user presets removed AND back to the factory-installed firmware, you need to reflash the firmware using Monkey. If you just want it back to the factory tone presets, but keeping the latest-installed firmware (which is what you SHOULD do if you're selling it), simply unplug it, hold down the left arrow, and plug it in, continuing to hold down the left arrow until the A1 preset appears on the screen.

Thanks for this thread, and thanks for the videos showing how you actually created the patches. I just bought a used HD500 (not the X) to get me by until I can afford the X or better, and I'm still getting to I know the board. I find seeing how you created them extremely helpful. Also, it has at least one foot switch that will need to be replaced, so I'll definitely be digging into that video later this evening. Have you ever replaced the toe switch on the pedal? This one seems to be non-functional. Is it the same type of switch? Thanks!