I'll go on a chat with someone, he'll say that I need to do a transfer which is not what I want to do. He'll ask for both console's serial number, which I don't have. The problem is that, from Nintendo's side, the only way possible to unlink an NNID is to do a transfer (which is not what I want)...
edit : Or format the system using Nintendo's tool. Which I apparently can't do anymore
edit : Or format the system using Nintendo's tool. Which I apparently can't do anymore
Last edited by natinusala,