Remove the two screws at the place of the battery under the Dsi Xl.

Lift the protector from the battery.

Take the battery off the Dsi Xl.

Remove the rubber blocking the screws on the Dsi Xl with a push pin don't hesitate about it.

Remove the presenting screws in order to take the bottom part of the Dsi Xl off.

x4 silver 5.33m screws

x2 black 5.3m screws

x1 black 2.5m screw

Insert the spudger (or anything similar to it)between the uper and lower part of the case at the left or right corner it doesn't really matter.

Keep on doing the same around the case.

Using your hands unconnect the connectors from both sides ( you can always put them back.)

Lift the Wi-fi Board off of its socket.(you can also put this back.)

Pull off the Wi-fi cable from The Wi-fi Board.

Finally you've finished and you have Dsi Xl Wi-fi Board:)