From now, all owners of a Paper Mario: Sticker Star copy are abled to access the homebrew launcher.
The tutorial and files on how to setup the entrypoint can be found here: https://github.com/yellows8/stickerhax (credit to yellows8).
This entrypoint is compatible with every software version.
You can also downgrade your sytem to 10.4 from 11.0 (IMPORTANT: IT IS A PARTIAL DOWNGRADE), watch this tutorial on youtube on how to do it.
The material needed for the tutorial is two 3DS devices (a hacked or hackable one with CFW and the one that you want to downgrade a) and the zip file provided in the video description.
The homebrew launcher allows the owners of a 3DS or N3DS to load homebrew (apps created by third parties) and modified nintendo roms known as hack rom.