Brewology

in the New BootMii you can backup and upload your wii, but what if you used someone elses nand, say you used a virgin 3.2 put bootmii and homebrew on it, backuped the nand, and used it on a 4.0 to upload.
Just a theory and if it works it would be a very good way to downgrade and safe by the sounds of it. Would like possible testers. as with bootmii if something goes wrong you can always use your save you backed up with

You are forgetting one thing... the fact that you can even INSTALL bootmii means that your Wii is homebrew capable which also means you are already able to downgrade using other methods, such as using any region changer.

EDIT: I take that back, Bootmii can be installed using the new bannerbomb exploit.