I'll second rafa74's comment: be VERY careful about putting too much stress on the TINY cable that connects the Home button to the rest of its assembly! I ripped mine as well. You have to slowly separate the Home button's plastic sub-assembly from the display module itself (with a kitchen knife, for example). Otherwise the moment you start parting the display module from the mid-board, you run the risk of tearing the Home button cable... it's far too easy.
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