Introduction
Get back your R button functionality with a new right shoulder button.
What you need
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Grab the top edge of the back cover with your opposite hand so that the cover does not fall back into place.
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Pull the back cover up and away from the rest of the device to remove it.
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Insert a plastic opening tool into the notch in the lower case above the battery.
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Pry the battery up with the plastic opening tool.
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Grab the top edge of the battery and lift it out of the lower case.
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Remove the nine 6.3 mm black Phillips screws from the lower case.
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Remove the 2.4 mm silver Phillips screw above the game cartridge slot.
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Lift the bottom edge of the lower case off the rest of the 3DS.
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Use a plastic opening tool to pry the shoulder button ribbon cables off their sockets on the motherboard.
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Remove the lower case from the device.
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Remove the three 3.6 mm Phillips screws securing the metal battery shield to the lower case.
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Lift the battery shield up and out of the lower case.
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Insert a plastic opening tool under the left side of the right shoulder button cover.
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Pry the black plastic cover up from the lower case.
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Grab the cover and lift it off of the lower case.
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