[* black] Once the four security bits are removed, carefully open up the casing as pictured.
[* [* black] '''Note''': When removing the top button pad, keep in mind that it was originally glued on by Bose, and may need to be re-glued upon installing the new casing.
[* [* black] '''Note''': When removing the top button pad, keep in mind that it was originally glued on by Bose, and may need to be re-glued upon installing the new casing.