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The first solution directly on the guitar doesn't work (impossible to obtain red light, I don't know why). I had already tried. The second is right, updating firmware with Monkey, but without forgetting to select "no" when it asks "do you want to keep the patches on the instrument?". It's logical... :) Thanks again, very cool forum (for a cool guitar)

Great ! It works !!! (reinstalling firmware). Before, I was always answering "yes" to keep patches on the JTV. It was wrong, of course. All is perfect, now. Thank you very very much. :)

Hello everybody, Firstable, please, excuse my (very) poor english. I'm french... :) I'm trying to find a solution for my jtv69. The problem is 'simple' : I'd like to reset all the originals presets. I don't know how, but I've lost severals presets (custom, T-Model)... (maybe using wrongly the models selector?). It appears in Workbench with '??????????'. Updating didn't change anything, unfortunately. And the bundle in Workbench is a backup with these wrongs presets... Impossible to find a clean bundle. Is there any solution for reseting all presets correctly ? Directly from my JTV ? I hope that my words are understandable :) Thank you very much for your answers (with simple words, of course). And happy new year, everybody. Eric