The following is a listing of the factory reset sequence for every A R...

The following is a listing of the factory reset sequence for every A R T product ever made. (If the unit is not listed here, there is nothing to reset because it's preset only). Note: Performing a factory reset will result in the loss of your custom presets. In some instances, having to reset your unit may indicate the need to replace its lithium battery (eg. re-occurring gibberish found in the LCD display).

101 ECC - Press "STORE", "PARAMETER", and "VALUE" buttons simultaneously during power up (display shows "888")
105 BCC - Press "STORE", "PARAMETER", and "VALUE" buttons simultaneously during power up (display shows "888")
124 Xtreme Plus - Press "DISTORTION SELECT", "VIEW/SAVE", "DOWN", and "UP" buttons simultaneously during power up (display shows "88")
191 01, 01A - Press "ROOM TYPE INCREMENT", "DECAY TIME INCREMENT", and "4" buttons simultaneously
205 Pro Gate - Press "BYPASS", "8", and "SELECT" buttons simultaneously
320 Proverb 200 - No reset, remove battery for over 5 hours.
330 Multiverb - Press "PRESET DOWN", "1", and "4" buttons simultaneously
360 Multiverb II - Press "PRESET DOWN", "1", and "4" buttons simultaneously
370 Multiverb EXT - Press "PRESET DOWN", "1", and "4" buttons simultaneously
380 SGE - Press "PRESET DOWN", "1", and "4" buttons simultaneously
412 DST-4 - Press distortion select (button beside "Xtreme"), parameter edit (button beside "Delay Time"), and "SAVE" buttons simultaneously.
415 Quadra/Fx - When in Preset mode only, press and hold in sequence "Bypass", "Routing", and "Effects", release, after "rSt" display, press "Bypass" again.
416 DMV-Pro - In MIDI/Util Mode, turn Encoder B till LCD B reads "Press EDIT for Factory Reset". Press Edit B twice. Alternatively, press all three encoder knobs at once (regardless of current mode), after confirmation prompt hit Edit B button.
420 Multiverb LT - No reset, remove battery for over 5 hours.
421 Multiverb LTX - No reset, remove battery for over 5 hours.
422 SGX LT - No reset, remove battery for over 5 hours.
424 FXR Elite - Press "Preset UP", "DRY KILL" and "BYPASS" buttons simultaneously
426 DXR Elite - Press "BANK", "SOFT KEY", and "BYPASS buttons simultaneously
427 RXR Elite - Press "BANK", "DRY KILL", and "BYPASS buttons simultaneously
428 Effects Network - Press "VALUE", "SAVE", and "BYPASS" buttons simultaneously
430 DRX - Press "PRESET DOWN", "1", and "4" buttons simultaneously
431 DRX 2100 - Press "PRESET", "0", and "4" buttons simultaneously
432 DRX 2100 SE - Press "PRESET", "0", and "4" buttons simultaneously
434 FXR Elite II - Press "MIX", "STORE", and "BYPASS" buttons simultaneously
440 Multiverb III - Press "PRESET DOWN", "1", and "4" buttons simultaneously
450 SGE Mach II - Press "PRESET DOWN", "1", and "4" buttons simultaneously
451 SGX T2 - Press "PRESET", "0", and "4" buttons simultaneously
453 SGX Nitro - Press "PRESET", "0", and "4" buttons simultaneously
470 Alpha - Press "PRESET", "0", and "4" buttons simultaneously
471 Alpha 2.0 - Press "PRESET", "0", and "4" buttons simultaneously
472 Multiverb Alpha SE - Press "PRESET", "0", and "4" buttons simultaneously
490 SGX Nightbass - Press "PRESET", "0", and "4" buttons simultaneously
491 SGX Nightbass SE - Press "PRESET", "0", and "4" buttons simultaneously
500 SGX 2000 - Press "PRESET", "0", and "4" buttons simultaneously
501 SGX 2000 Express - Press "PRESET", "0", and "4" buttons simultaneously
512 X-12 - Press "UP", "2", and "5" pads simultaneously
530 X-15 UltraFoot - Press "UP", "1", and "5" pads simultaneously
810 DST-Eighty/Eighty - Press distortion select (button beside "Xtreme"), parameter edit (button beside "Delay Time"), and "SAVE" buttons simultaneously.
820 DST-820 - Press "PREAMP SELECT", "PARAMETER SELECT", and "SAVE" buttons simultaneously
825 DST-825 - Press "PREAMP SELECT", "PARAMETER SELECT", and "SAVE" buttons simultaneously
830 DST-830 - Press "PREAMP SELECT", "PARAMETER SELECT", and "SAVE" buttons simultaneously