Remove the battery isolation pick.

Insert a plastic card underneath the logic board at the battery connector.

Do not use excessive force when inserting this card under the logic board to prevent damaging its battery pins. If the logic board wont budge easily, try reheating the adhesive underneath with an iOpener.

As you push through the adhesive at the outer edge of the logic board, be careful not to damage the upper button assembly ribbon cable that you disconnected in Step 60. Position the card exactly as shown.

Slide the card all the way underneath the logic board, separating the adhesive along the outer edge.