How to install Soundhax on 3DS For Homebrew launcher (11.2.0-35 or below/o3ds and new3ds) : mattRlive : Free Download, Borrow, and Streaming : Internet Archive
Instalar boot9strap (Soundhax) - 3DS Hacks Guide
Complete Guide to Installing SOUNDHAX on Nintendo 3DS - Homebrew, Custom Themes, Emulators & More! - YouTube