Having performed this repair several times, most of these steps are completely unnecessary. After you take the back off, still disconnect the battery, but you can essentially skip from step 3 to step 31. Just add a note about unplugging the LCD cable, the Camera/Mic cable and the Antenna cables before unscrewing the 6 hinge screws and you are done. Removing everything else is a huge time sink that is not need and adds a ton of complication.
Having performed this repair several times, most of these steps are completely unnecessary. After you take the back off, still disconnect the battery, but you can essentially skip from step 3 to step 31. Just add a note about unplugging the LCD cable, the Camera/Mic cable and the Antenna cables before unscrewing the 6 hinge screws and you are done. Removing everything else is a huge time sink that is not need and adds a ton of complication.