my friend got scammed, he bought a new console that was said to be US but it is a Korean wii that was changed to US. its now 4.1U, and it having a lot of problems, not all games work and some need restart to work. i want to revert back to the original 4.1 Korean and install then homebrew channel with usb loader gx or cfg-loader. how can i do it? is it wise?