Lift and remove the upper speaker from the frame.

There are multiple cables under the upper speaker. Be careful not to damage them while removing it.

If any cables are still attached to the upper speaker while you lift it up, carefully peel them off of the upper speaker. You can apply more isopropyl alcohol if they don't easily peel away.

If the ZIF connector sticker near the front camera comes off while removing the upper speaker, reapply it to the ZIF connector.

If the ZIF connector near the front camera disconnects while removing the upper speaker, use the pointed end of a spudger to flip up the locking flap. Then, reinsert the ribbon cable and close the locking flap.

During reassembly, make sure the right ambient light sensor is on top of its shelf.

If there's any alcohol solution remaining in the device, carefully wipe it off or allow it to air dry before reinstalling the upper speaker.