Introduction
You will need a T5 and a PH000 tip from the iFixit's kit.
If the camera is taking fuzzy pictures it may be due to debris blocking the lens.
Tools
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            Slide the second cover (yellow) to the right (similar to the outer cover). This will allow the batteries to be exposed. 
 
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            Remove the left screw from the bottom of the camera first. This can be done using the same T5 tip. 
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            Unscrew the screw on the right using a different attachment: PH000 (it is a small Phillip's head) 
 
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            Remove the motherboard from the front case. 
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            Leave the red and black wire attached but lay the piece in front of the case. 
 
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To reassemble your device, follow these instructions in reverse order.
One comment
The first three steps are redundant because you already included the prerequisite guide for removal of the batteries.