I have been trying to turn my wii u region free and i had some problems. I tried to follow this guide https://gbatemp.net/threads/regionhax-how-to-get-regionfree-on-wiiu.448468/. Im pretty sure i used red nand when i was hacking my wii u, but when i go to CFW rednand doesn't open, i just go back to the wii u menu.