I just replaced my battery successfully using a modification of this method: follow step 1-4, then 34, then remove the battery pack using thread (or dental floss as in my case), as shown in this video: https://www.youtube.com/watch?v=fupkPz55... . If you use dental floss, make sure you at least quadruple it to have enough strength, and tie around two screwdrivers at the ends, otherwise it can be pretty painful. Finally, use a very small amount of the adhesive remover liquid to help fully remove the adhesive strips (making sure it doesn't go anywhere else), and install the new battery (step 54)!
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