Hello, I had this problems once a few months ago but it solved itself. Now it has returned. I was online with my Wii U and then loosed connection. The Wii U became unable to connect to my router even it is listed in the list of available networks. I did not change anything on the router or Wii U. My computer can connect to it just fine. The error code I get is 103-1602 I tried connecting to it from sysNAND and redNAND, entered the connection and so on. no success any idea what's wrong?