RTFM.
To perform the Factory Restore procedure:
1 . Start with the power cable disconnected (unit powered down).
2 .Press and hold the STORE button while connecting the power cable. When Frappears in the display, release the STORE button then quickly press and hold the STORE button again for 3 seconds until rSt appears in the LED display then release.
3 . The Factory Restore procedure will be performed. Wait for it to finish. At this point the Factory Restore procedure will be complete if using an Element. When resetting an Element XP, you must proceed to step 4 to calibrate the Expression Pedal.
4 .When tdn appears in the display (Element XP only), the Element XP's Expression Pedal is ready to be calibrated. Rock the
EXPRESSION PEDAL forward (toe down) then press either FOOTSWITCH .
5 . When tuP appears in the display, rock the EXPRESSION PEDAL back (toe up) then press either FOOTSWITCH.
6 . If the calibration procedure is successful, the Element XP will return to Play Mode and will be ready for use. If the calibration procedure fails, Err will appear in the LED display followed by tdn. If this happens, repeat steps 4 and 5 until calibration is successful