G'day folks. Am sure the answer is on here somewhere but cant find it doing a search.

Got hold of an MX-500 and want to reset back to factory defaults. I followed the destruction manual and presume I have done all the codes but some of the LSD labels are still showing what they had been changed to previously.

Is there a way to take it right back to the beginning or at least reset the lables?

One other. I see that entering aux 155 resets all as well. How do I enter this?

Thanks in advance