i did just randomly try this on my wii...
i used priiloader + MMM to get HBC v0.8 on my wii and thats basicly all i used...

this method DOES NOT require any games....(so 4.2 wii's can upgrade after a format(that keeps priiloader on)all 4.2 wii's need is banner bomb)

if u want this method ask me later i might be asleep in a few :<

Ummm.. No.
First of all, MMM is not supported here and is just a horrible tool.
Secondly, if you're on 4.2 you can install the HBC with bannerbomb then update. That's it. Priiloader will be removed with the update. If you're on 4.3 already then you can't have Priiloader without having the HBC already. So you need a game exploit on 4.3. Period.