much more safer to use duct tape, instead of torx 6. (glue it along the length of the grid and pull). it will loose instantly and smooth;)
That's not so difficult step. you shoul know , that front edge of upper case holding only on 5 plastic "locks" 4 in front edge upon the superdrive, 5-th near the "sleep light, open laptop button"
just lift up the rear edges of upper case to 35-40 degrees
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