Introduction
Prereq for upper case.
Tools
- 
                  
                  
- 
            
Use the flat end of a spudger to pry and disconnect the three antenna cable connectors from the AirPort board.
 - 
            
Connect the long-sleeved cable to the center socket.
 - 
            
The short-sleeved cable connects next to the screw.
 - 
            
The remaining cable has no sleeve, and connects in the last empty socket, next to the fan.
 
 - 
            
 - 
                  
                  
- 
            
Remove the following two screws securing the I/O board to the upper case:
 - 
            
One 3.53 mm T5 Torx screw
 - 
            
One 4.89 mm T8 Torx standoff screw
 
 - 
            
 
                            
                            Conclusion
                          
                          To reassemble your device, follow these instructions in reverse order.