Well, I updated the firmware to the latest version. The problem continues. The preset tone will play and then the processor will kick it out and revert back to "clean amp model" amp preset. Tried other tones and same result. Tried to save preset tones to my preset bank. Saved fine but did the same thing when using that preset. My aux port works fine and the mic works fine. Found when I tried to play over the preset songs my guitar made no sound at all. After working on it with another musician and brainstorming ideas we think that the processor has a major problem and must be starting to go. I now have, essentially, a 40lb paperweight.