So I had this Wii U for ages but the problem with it is that I bought it used so it has the NNID of the previous owner, and since I don't have access to their password I can't delete it. Is there a homebrew that lets me delete the user? Something similar to the 3DS' godmode9 so I can delete it directly? Any help with this would be appreciated. The NNID is "blackknight08" and I looked around to see if I can message this person directly but I had no luck other than dead DeviantArt and Twitter accounts.