I have my H9Max filled with all the presets that I need, so I haven’t needed to program it recently. I unplugged it at our rehearsal space the night before, and plugged it in at the gig the next day, that’s when I got the No Algo error message. I could not access any presets. When I tried to scroll through the presets, I got another error message 1.7777777g or something. It wasn’t until I connected the H9 to my Ipad via bluetooth, that’s when the presets returned.