Suddenly having issues trying to access the eShop on your 3DS? Don’t worry, because we have the answer!
The eShop is not down for maintenance, it’s just not accessible until owners of a Nintendo 3DS, Nintendo 3DS XL, New Nintendo 3DS, New Nintendo 3DS XL and Nintendo 2DS update their system as update version 11.4.0-37U is available right this minute.
As for what the update entails, it just further improves the overall system’s stability and it is mandatory, since you are required to update, should you ever wish to access the 3DS eShop ever again.
For more like news on anything related to Nintendo and updates for its hardware and software, the site to visit is miketendo64.com
Source: en-americas-support.nintendo.com