Hi, I just bought a used Wii U and the previous owner already installed a CFW. Because I can play a game from HDD(Bundled with the sale) and I can see a Haxchi folder in it when I started the machine. How do you tell if its already have haxchi or CBHC? I already tried to click Haxchi folder but its stopped and showing "-3". The reason I'm asking this is because I want to install another game into the HDD. I already download some game using WiiU USB helper and planning to install it from the SD card.