It took me a few tries because I did it at like 3am, was so tired.
I got scared because it kept "sobering up"; aka failing. and there was no turning back, the phone wouldnt go back into a regular boot without completing the procedure.
One thing is KEY. You HAVE to TAP the wire once on the metal, WAIT, and then hold it to the metal. that was my success. I tried to hold it, tap it a bunch, but what I just said was 100%.
Make sure you DO NOT use an un-insulated wire, and do not touch the connections; you risk damage. I wound up using a paper-clip wrapped in a good amount of electrical tape. I think its better than a wire because a paperclip is pliable and is able to be set in place, you can bend it so you never have to touch anything but the middle where the tape is.