NotJimCarrey

Nope, disconnected my battery and wired the 12V/15A power supply (I'd probably recommend a little higher) to the battery cables. I also have a 13.8V/18A DC power supply that I'll be using from now on. Yeah, I know I am VERY lucky I didn't brick it and can't stress enough that anyone else properly follow the instructions: power supply, NOT charger.

Ok, so I tried to do the update, but my screen went black. I waited over 20 minutes, but there's no change. Now my car won't do anything. I can't even roll my window up. Edit: So I read through the entire thread and noticed that a standard battery charger will not be enough. I ended up just using a PC power supply (make sure you disconnect your battery), and it went fine.