For some reason today when I was going to use 3DS wi-fi functions to go to eshop and stuff, my 3DS couldn't connect to the router, tried to reset the router and nothing, deleted my connection settings and my 3DS couldn't find any acess point.
Then I wondered if my 3DS local wireless still works and tried some DS games since I don't own two 3DSes, but I own both a 3DS and a DS, first was PuyoPop Fever and got "connection failed" screen and the game got stuck in the "waiting for other players" screen
Then I tried older Pokemon games like Pokemon Diamond and when I booted the game, a "communication failed" screen appeared and then the game got stuck in some sort of white screen.
Someone could please help me and give some possible solutions to my problem, my 3DS is the first model and the firmware is 9.9.0-26U
