![]() ![]() Be sure the head of your flathead screwdriver fits snugly across two of the five “points” of the screw head before trying to break the screw free, as a loose fit will easily strip the screw head. If you don’t have a Pentalobe driver, a 1.5 mm flathead screwdriver can be used in a pinch. They can be removed with this special driver. Three Pentalobe screws secure the battery to the upper case. However, it is recommended to remove all power sources from electronics before working on them. You do not necessarily have to follow steps 3-7 to remove the battery in order to replace the hard drive.If the head of your screwdriver fits too loosely, find a bigger bit and file it down until it fits snugly before proceeding. ![]() If you don’t have a Pentalobe driver, a 1.5 mm flathead screwdriver can be used in a pinch.Three Pentalobe screws secure the battery to the upper case.Using both hands, lift the lower case near the vent to pop it off two clips securing it to the upper case. Remove the lower case and set it aside.Using both hands, lift the lower case near the vent to pop it off two clips securing it to the upper case.Remove the following ten screws securing the lower case to the upper case: Remove the following ten screws securing the lower case to the upper case:. ![]() BackMacBook Pro 15" Unibody 2.53 GHz Mid 2009 ![]()
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