I have printed out those reset and keep them in my camera cabinet. I have used them once or twice.
Another thing that you may try is to reinstall your cameras firmware.
I had an odd AF problem last summer. Nothing I tried helped including a cold-reset. As a last ditch effort I downloaded the most recent firmware and ran the firmware update procedure and the camera has worked fine since.
You can do this even if your firmware is up-to-date. Running the update procedure will overwrite the installed firmware so if there is a bit of corrupted data hiding in there it will be corrected.