I have read alot on this and its still not clear.
I have 4.2 and loaded soft mod homebrew from the sd card. I have boot mii installed also. Here is the question- I have wiiflow on my hbc but when I click on it the screen goes blank and I have to restart? What did I miss?? I would like to get to the point of loading game(back-ups) from my sd card.
You missed 3/4 of the guide. Homebrew channel and bootmi don't play backups, a cios and some ios files do. Finish the guide and you might have what you need.