I believe the guide is correct, but be careful as the screws are not the same as the other 1.2mm screws from later on. Length is the same, but the diameter is not... just keep them all separate.
IMPORTANT. As Jason mentions, there is a small black metal clip which you MUST remove first. It's actually got hooked ends so if you grab it from the middle and pull it will simply deform. Instead grab a small flat head screwdriver and place the flat of the blade under the metal clip - come in from the top at the point where the tiny hole is, then move the tool to the left (toward the speaker jack). It should ping the hook out (be careful it doesn't launch across the room!) and the piece will then just drop out.
My screw here turned out to be rusted, so was REALLY tough to remove, I pretty much stripped it whilst getting it out with a 1.0 flathead. Not sure if this area is prone to getting wet, but be warned. I noticed an orange tinge to the screw before I started but thought it was a reflection from the ribbon.
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