Slater
Headphoneus Supremus
That is a crazy small and funny shaped screw head. I don't have the bit for it, so I am gaing to stick with my ghetto solution: An old ZS3 cable wih one side plugged in reversed. It has straigh-in connector, so it is easy to reverse one plug. I know that I am violating the instructions in your signature @Slater , since the connectiors are "coded"
Yeah, it's a 5-sided security screw called a Pentalobe. It's similar to a 6-sided Torx screw, except with 5 points instead of 6.
Thanks Apple...