Playing with no outlines on an old3ds with CFW (Custom FirmWare)
Here's how to do it..
https://3ds.guide/If your 3ds is on 11.0 or higher forget about trying. It is impossible to downgrade anything over 11.0 unless you want to solder shit.
I updated my main 3ds XL like a retard so I went and bought a used one from gamestop to downgrade and mod.
Follow the guide and you should be up and running very quickly on CFW.
Then go and grab the no outlines codebin for your game and dump it in SD:/luma/code_sections
You can also do this to inject pokemon via QR code. (Alola only)
Pre-patched codebins:
https://mega.nz/#!nQUDwZQJ!LYEszSk-7_Fx7srnSU9PGQjoSjZT2SflRhMyAEsxj4k 
