i get the error 86420 when i try to battle or trade on wifi with my friends.
@ support nintendo it says, "Ensure your router has the latest firmware installed. Visit your router manufacturer?s website and look for any updated firmware that may be available (these are typically found under "downloads" or by searching for your particular model number). Contact your router manufacturer for additional assistance."
I'm not sure what it's asking me to do exactly. So if anyone knows what that means could they give me some pointers? or if anyone has had this problem before and knows how to fix it please... help.