I just gave the same answer neobrain keeps giving in the braindump thread everytime someone asks that question. So it's a perfectly sufficient answer.
But to elaborate (if i must), brainbump doesn't have the ability (access) to dump the "full" game (as in a .3ds file etc) like the gateway menu or Uncart does. So there's no header to get from anything.
You ask a question, you get an answer that looks to me pretty straight forward and neutral, Then you say shutup, some ppl really have to make up there mind on what they want.