Where is GPS antenna located?
"remove the 3 mm T5 Torx screw securing the end of the heat sink to the upper case" -- an optional step when detaching components from upper case for cleaning, eg after a liquid spilled to keyboard.
I recommend to loosen outward screws at this step, so it is easier to completely unscrew them on the next step.
> Please notice that the new battey is an original Apple battey - not a copy product.
How can you be sure it is original?
This step can be skipped, not required for removing the fan.
@digitaldion, Could you share what is time on a single charge now, after almost a year of active(?) use?
To moderators: please un-archive this guide: there's no replacement or "updated version of the guide" among the current guides.