Introduction
This is not a guide for replacing the switch assembly, only for replacing the plastic covers to the buttons.
Tools
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Remove back cover of the device from the crease of the bottom left corner using opening tool or fingernail.
 
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Being careful with the device, gently pull up the device body tugging from the inside of the device.
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Be sure to pull away from the device.
 
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Carefully use a pair of bent nose tweezers to pull out the button cover. I should come out easily.
 
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                            Conclusion
                          
                          To reassemble your device, follow these instructions in reverse order.