1) Unplug the RJ45 cable from your FBV EXPRESS
2) Move the expression pedal all the way to the toe down position
3) Hold down the A and D switches
4) Plug in your RJ45 with the switches still depressed and hold this for 10 seconds (you will see the LED go blank)
5) Move the expression pedal to the heel position and then all the way forward to the toe.
6) Shift all of your weight to the toe position (you will want to stand up) until the WAH light switches on.
7) Wait 10 seconds and click back to VOL. Your FBV EXPRESS is now calibrated.
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Spider I, II, III, IV, Micro, and Valve Series: Hold down the A (or clean) button as you turn on the power and hold the button for 5-8 seconds.