Things You'll Need
Instructions
Unscrew the screw on the back of the Pokewalker with a mini screwdriver. Take off the cover.
Push a pin or thumbtack softly onto the small depressed button on the left side of the back of the Pokewalker and hold it for at least 5 seconds; this will reset the Pokewalker.
Replace the cover and the screw, using the mini screwdriver.
Turn on the Pokemon game and navigate to the Pokewalker Connection Screen.
Hold the buttons Down + X + L to reset and resync the Pokewalker to your game.