I think he means 4.0.X/4.1.0/5.0.0/5.1.0, since the exploit works on these versions only (I'm not NWPlayer, only saying xD)
By the way, NWPlayer123 if you need, I can test something for you, my Wii U is in 5.0.0U
By the way, NWPlayer123 if you need, I can test something for you, my Wii U is in 5.0.0U