Bluebook12

I just got a used POD X3 PRO last week and I have been having a similar issue. Just randomly reboots. In addition to this, I have noticed also that the knob that you use to cycle through the presets freezes at any given number if you turn it too fast, which often causes it to reboot as well. Turning the unit off and turning it back on fixes it temporarily but then it happens again...I am going to be playing live soon and I need to figure this out. Please help! :)