Toolkits are great when they work. They are a pretty good starter kit to the world of unlocking, rooting, roming. When I use ADB it's like copying a recipe or letter to the exact degree at first but I am able to start getting an idea of what is really going on. Had it not been for rootkit I would probably still be stuck in the mundane and boring world of stock Verizon. (Ugh, what a thought.)
No it's (cable pull) exactly what I had to do on my gnex. It went all night stuck like that and in the morning had completely gone dead. Had to charge several hours with original cable to bring it back. Next time it did it I pulled the cable and started over, it worked the next time--no brick. Maybe I was just lucky.