I hacked my friend's wii a few months ago and I have just updated his up to 4.2U. Mine was also done in this manner. A few weeks ago, I was struggling with Rockband Beatles and Guitar Hero 5. I can't remember what I did to get it to work. My friend's wii will just hang at a black screen. They both work on mine, though. I was wondering if I could make a NAND copy of my wii and install the NAND on his so that he could play these games? Just curious about it.