Pod HD300/HD400   Factory Reset: Hold down the A footswitch while powering the unit on. Press the PRESETS knob, then press it again. Video Tutorial   No Global Settings reset   Pod HD/HD500/HD500x/HD Pro/HD ProX   Global Settings Reset: Run Line 6 Monkey with the HD500X connected via USB.  Highlight FLASH MEMORY and click REINSTALL LATEST (or INSTALL LATEST if Monkey shows that you are running older firmware).  Make sure to back up all of your preset