Make sure that the Nintendo 3DS system is within 30 feet of the wireless access point and facing in its general direction.
Make sure that any other interfering devices, such as microwaves and cordless phones, are turned off.
Connecting from a Hotspot
Ensure the Hotspot location does not require an internet browser to setup an account, accept a use agreement, or enter a password before accessing their Wi-Fi service. If the location requires any of these items, you will not be able to connect to the internet with your Nintendo 3DS system.
Make sure that the Nintendo 3DS system is within 30 feet of the wireless access point and facing in its general direction. Signal strength can vary, depending on where the access point's signal is coming from. (Please do not sit or stand in places that will interfere with the location's customers or staff.)
Orient the Nintendo 3DS so that your body or other objects (such as walls, plants, furniture, and other people) are not blocking the signal. Also, make sure there is no interference from wireless phones (cell phones are okay).
If the connection continues to fail, this Hotspot may have their router set up in a manner that is not compatible with the system. We recommend trying a different location.
Dang it, i didnt found it on google, oh god why.., nice info btw, im next to the router but still error code shows up, i downloaded eshop demo yesterday, i went fine though, i dont understand why this happen when i try to download those two