How to remove a stripped pentalobe screw
When doing the bottom case assembly (with the pentalobe screwdriver from ifixit), one of the pentalobe screws got stuck and a few attempts to turn it made the head stripped. I have a replacement screw, but I'm unable to take this one out.
I've seen numerous posts around here regarding this matter, but none of them were concerning the pentalobe screws.
Any suggestions on removing the screw?
When I have this problem with a torx screw I use a small flat screwdriver that can enter between two notches and apply a little force to unscrew the $%#@$%? screw. Maybe you can try this trick. If your MBA is no more covered by the Apple warranty you can also use a Dremel with a small rotating blade to make a notch and then use a flat screwdriver to take off the screw.
Lowe's has removal tools, basically it's a coarse, reverse threaded carbon steel bit that is designed so that as you twist the bit counterclockwis
We have just recently added these screw extractors to our store. They would fit that screw size for the MBA and might be able to take out the screw. Screw extractors, in general, don't always work depending on how stripped the head is, but it's an alternative to trying to drill it out.