I have this problem on my N3DSXL. I cannot connect to any online services/multiplayer of any game. Example. try connecting into a room in MHGen. but it gives me the error code 003-0612(i think is correct?). then if i play fantasy life go to online multiplayer, i get the error code 003-0512. I can access the E-shop, Download from it, and Update games so meaning i am not banned.Tried also on my Pokemon Ultra Moon Cart, i cant do Wonder Trade, or even Link Trade but i can access the GTS.I'm on Luma3DS 9.0. b9s .and did move my EMUNAND to my SYSNAND but still errors persists.
My R shoulder button is quite defective, what seemed to be weird(sometimes it doesnt work and most of the time works), and bottom part of my 3ds heats up a little. would it affect my wifi connection?my 3ds itself or is it just my connection?
tried turning off and on WiFi on the 3ds and restarting my router as well. tried DMZ and google dns also but i still it cannot connect even though a have a stable connection.
I've been using it while charging into a Powerbank which outputs 1A. is this causing this? been using this routine about 3weeks.
what is causing my 3ds to not connect to online multiplayer in any game.? can anyone answer?
Thank you