My M13's displays started messing up not but about 3 months after I got it. I looked it up on the forum and there was a simple solution: factory reset. It worked perfectly minus the fact that I would have to back through to reset my presets. It would start doing it more often so I would just have to continue resetting it. It got to a point that if I plugged it into a power strip, or anything other than a wall outlet the displays would spaz out and my presets would start changing and the stomp boxes would sound messed up. I hadn't even had it a year and the displays were messed up and even a factory reset wouldn't fix it. Now it won't even connect to a computer so I could try a firmware update. Any suggestions?