Hi. My HX Stomp suddenly stopped during a gig. All that is passing through is the analog dry signal.Volume knob and tuner does not work. I upgraded firmware to 2.81 from 2.71 but to no avail. There are no sound at all coming from the headphones. Even the volume knob and tuner does not work. I have already installed, reinstalled, downgrade and upgrade versions. Am I missing something here? Does anyone encountered this issue before? Maybe someone knows a quick fix? I am living in the Philippines so I cannot return the unit. Appreciate your response. Thanks