Hello, I turned on my helix, no usb cable connected and it randomly showed a screen saying 'updating UI MCU firmware, please wait. Do not power off unit' it also has a red '-7' at the top left. I did not start an update for it. I don't even know how its updating without a computer telling it to. I've tried booting it holding down buttons 6 and 12 yet nothing changed. I've tried actually updating it however it doesn't show up in the line 6 updater. I can't use the helix. Can't