I just tried rooting my new NSZ-GT1 and bricked it. Pretty sure I failed at step #9 - Press 0 (after using USB3). Instead pressing 0, I flipped the power off and tried entering recovery mode. Dead as a door nail.
Tried restoring using the latest exploitable USB file - nope. Again, no response. He's dead Jim.
@Xenofex, I think I need your services. I tried PM-ing you, but the forum told me that I couldn't use the feature until I participated more.