3DS:Alternate Exploits/Installing boot9strap (HBL-USM)

Required Reading

In order to exploit the SAFE_MODE firmware of our system, we need to inject an exploited WiFi profile.

As we already have homebrew access, we can use slotTool to do this.

Once the WiFi profile has been injected, we will use SAFE_MODE, which is a recovery feature present on all 3DS consoles, to activate the exploited WiFi profile.

If your (Right/Left Shoulder), (D-Pad Up) or (A) buttons do not work, you will need to use another method. For assistance with this matter, join Nintendo Homebrew on Discord and ask, in English, for help.

What You Need

The latest release of SafeB9SInstaller (direct download)
The latest release of boot9strap (direct download)
The latest release of unSAFE_MODE
- You may already have this from a prior section of the guide

Instructions

Section I - Prep Work

Your console should be powered on and showing the Homebrew Launcher from the previous part of the guide
Launch slotTool from the list of homebrew
- If you get stuck on a red screen, delete slotTool.xml from the /3ds/slotTool/ directory, then retry this section
Select the "INSTALL exploit to wifi slots 1,2,3 & shutdown" option
- You will see some on-screen text and then your system will shut down
Remove your SD card from your console and connect it to your computer
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
Copy usm.bin from the unSAFE_MODE .zip to the root of your SD card
Reinsert your SD card into your device

Section II - unSAFE_MODE

With your device still powered off, hold the following buttons: (Left Shoulder) + (Right Shoulder) + (D-Pad Up) + (A), then press (Power)
- Keep holding the buttons until the device boots into Safe Mode
Press "OK" to accept the update
- There is no update. This is part of the exploit
Press "I accept" to accept the terms and conditions
The update will eventually fail, with the error code 003-1099. This is intended behaviour
When asked "Would you like to configure Internet settings?", select "Yes"
On the following menu, navigate to Connection 1 -> Change Settings -> Next Page (right arrow) -> Proxy Settings -> Detailed Setup
- This is a visual representation
If the exploit was successful, your device will have booted into SafeB9SInstaller

Section III - Installing boot9strap

When prompted, input the key combo given on the top screen to install boot9strap
Once it is complete, press (A) to reboot your device
Your device should have rebooted into the Luma3DS configuration menu
- If your device shuts down when you try to power it on, ensure that you have copied boot.firm from the Luma3DS .zip to the root of your SD card
Press (Start) to save and reboot
- If you get an error, just continue to the next section

At this point, your console will boot to Luma3DS by default.

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 install useful homebrew applications to complete your setup.

Section IV - Restoring WiFi Configuration Profiles

Launch the Download Play application
Wait until you see the two buttons
- Do not press either of the buttons
Press (Left Shoulder) + (D-Pad Down) + (Select) at the same time to open the Rosalina menu
Select "Miscellaneous options"
Select "Switch the hb. title to the current app."
Press (B) to continue
Press (B) to return to the Rosalina main menu
Press (B) to exit the Rosalina menu
Press (Home), then close Download Play
Relaunch the Download Play application
Your device should load the Homebrew Launcher
Launch slotTool from the list of homebrew
Select "RESTORE original wifi slots 1,2,3"
Your device will then reboot

Continue to Finalizing Setup