tried that, couldnt get her to budge though GRRRRRRRsmall flathead screwdriver will work..its spring loaded so press down (not too hard!) and then clockwise
really frustrated because it takes so long to get the case off, battery out, etc
i was using a 2mm flat head and while it's not a perfect fit, it should atleast move SOME....used a T-6 torx to get the TRi-wing battery screws out btw - perfect fit!!!