The following exploits make use of one of two DS-mode applications built into the 3DS: DS Internet Settings and DS Download Play.
If both DS Internet Settings and DS Download Play fail to work, you will have to repair them with [TWLFix-3DS](https://github.com/MechanicalDragon0687/TWLFix-3DS/releases/) using a homebrew entrypoint, such as Pichaxx.