Installing boot9strap (Soundhax)

For support in English, ask for help at Nintendo Homebrew on Discord.

If you appreciate this guide, we accept Donations.

Soundhax (when combined with universal-otherapp) is compatible with versions 1.0.0 through 11.3.0 in all regions.

The latest release of Soundhax (for your region, device, and version)
- If Soundhax appears in your browser as an unplayable video, press Ctrl+S or Cmd+S to save it to your computer
The latest release of SafeB9SInstaller
The latest release of boot9strap
The latest release of Luma3DS
The latest release of universal-otherapp

Power off your device
Insert your SD card into your computer
Copy the Soundhax .m4a to the root of your SD card
Copy otherapp.bin to the root of your SD card
Copy boot.firm and boot.3dsx from the Luma3DS .zip to the root of your SD card
Create a folder named boot9strap on the root of your SD card
Copy boot9strap.firm and boot9strap.firm.sha from the boot9strap .zip to the /boot9strap/ folder on your SD card
Copy SafeB9SInstaller.bin from the SafeB9SInstaller .zip to the root of your SD card
Reinsert your SD card into your device
Power on your device

Reinsert your SD card into your device
Power on your device
Launch Nintendo 3DS Sound
If you’ve never opened Nintendo 3DS Sound before and get tips on how to use it from a bird icon, go through all of the bird tips, then close the app normally and relaunch it
- In this situation, launching Soundhax immediately would cause these tips to appear on every launch of the Nintendo 3DS Sound until this is done
Go to /SDCARD, then play “<3 nedwill 2016”
- This may take many tries
- If it freezes, force the console to power off by holding the power button, then try again
- If your console displays a red and white screen and your console is on system version 9.4.0, 9.5.0, or 9.6.0, try following Homebrew Launcher (Soundhax)
If the exploit was successful, you will have booted into SafeB9SInstaller

Wait for all checks to complete
When prompted, input the key combo given on the top screen to install boot9strap
Once it has completed, press (A) to reboot your device

Your device should have rebooted into the Luma3DS configuration menu
- If you get a black screen, follow this troubleshooting guide
Use the (A) button and the D-Pad to turn on the following:
- “Show NAND or user string in System Settings”
Press (Start) to save and reboot
- If you get an error, just continue the next page

At this point, your console will boot to Luma3DS by default as long as the SD card is inserted.

Luma3DS does not look any different from the normal HOME menu. If your console has booted into the HOME menu, it is running custom firmware.
On the next page, you will copy Luma3DS to internal memory so that you can boot without an SD card.