N00bish questions:
Whats the difference between nand for dev-kits and non dev kits? I suspect its probably encryption of KV but as I've never been exposed to a dev kit nand I wouldn't know for sure.
If that is the case, then it would seem that there are already tools out there to do everything that HVXdump does, with the exception of the CPU key (as TheFallen93 points out) won't get you anything with a DevKit that booting XBL with eject didn't provide already.
I would also have to conjecture that if one had a DevKit, one would be savvy enough to utilize existing tools to do what they wanted without having to pay someone to recover their consoles, but maybe I'm making a brash assumption here...
Anyway, I'm all for people coding good apps and making them available to the public... Thanks, TheFallen93 and s0nicz, good work.