3DS:Alternate Exploits/Installing boot9strap (MSET9)

Technical Details (optional)

MSET9 is an exploit for the System Settings application developed by zoogie.

What You Need

• The latest prerelease of MSET9
• Any 3.x version of Python installed
  • If you are on Linux, you likely already have Python 3. Check by opening a terminal and entering python3 -V. If this returns a version number, it will work for this guide.

Instructions

Section I - Prep Work

1. Power on your console with the SD card inserted
2. Open Mii Maker
3. Wait for your console to reach the "Welcome to Mii Maker" screen, then exit Mii Maker
4. Power off your console
5. Insert your console's SD card into your computer
6. Copy everything inside the SDMC folder from the Release .zip to the root of the SD card, overwriting any existing files
7. Execute the mset9.py script on the root of the SD card
   • Windows: Double-click mset9.bat
     • If this doesn't work: hold SHIFT and right-click anywhere in the SD card window, then click the option that opens Terminal, PowerShell, or Command Prompt, then type py -3 mset9.py and press Enter
   • Linux: open a Terminal window, cd to the root of your SD card, then type python3 mset9.py and press Enter
   • You should see a window that says "MSET9 ... SETUP by zoogie"
8. Type 1, then press Enter to setup MSET9
   • If you get "does not exist on SD card!" and "Create it/them now? (type yes/no)", follow the troubleshooting guide
9. Once the window says "Done", insert the SD card into your console
10. Power on your console

Section II - MSET9

1. Hover over the System Settings icon using the D-Pad (do not select it yet)
2. Power off, then power on your console
3. Press (A) to launch System Settings
4. Navigate to Data Management -> Nintendo 3DS -> Extra Data
5. Do not press any buttons or touch the screen - ensure that you see the Mii Maker icon
6. With the console STILL ON, and without pressing any buttons or touching the screen, remove the SD card from your console
7. Insert the SD card into your computer
8. Execute the mset9.py script on the SD card root
   • Windows: Double-click mset9.bat
     • If this doesn't work: hold SHIFT and right-click anywhere in the SD card window, then click the option that opens Terminal, PowerShell, or Command Prompt, then type py -3 mset9.py and press Enter
   • Linux: open a Terminal window, cd to the root of your SD card, then type python3 mset9.py and press Enter
   • You should see a window that says "MSET9 ... SETUP by zoogie"
9. Type 2, then press Enter to trigger MSET9
10. Insert the SD card into your console without pressing any buttons or touching the screen
11. If the exploit was successful, you will have booted into SafeB9SInstaller
    • If you get a black screen, the exploit may not have worked properly
    • If you get a red screen, you didn't copy all contents of the SDMC folder in the Release .zip to the root of your SD card

Section III - Installing boot9strap

1. When prompted, input the key combo given on the top screen to install boot9strap
2. Once it is complete, press (A) to reboot your console
3. Your console should have rebooted into the Luma3DS configuration menu
   • Luma3DS configuration menu are settings for the Luma3DS custom firmware. Many of these settings may be useful for customization or debugging
   • For the purpose of this guide, these settings will be left on default settings
   • If your console shuts down when you try to power it on, ensure that you have copied boot.firm from the SDMC folder in the Release .zip to the root of your SD card
4. Press (Start) to save and reboot
   • If you get an error, just continue to the next page

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 - Uninstalling MSET9

1. Power off your console
2. Insert the SD card into your computer
3. Execute the mset9.py script on the root of the SD card
   • Windows: Double-click mset9.bat
     • If this doesn't work: hold SHIFT and right-click anywhere in the SD card window, then click the option that opens Terminal, PowerShell, or Command Prompt, then type py -3 mset9.py and press Enter
   • Linux: open a Terminal window, cd to the root of your SD card, then type python3 mset9.py and press Enter
   • You should see a window that says "MSET9 ... SETUP by zoogie"
4. Type 4, then press Enter to remove MSET9

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Continue to Finalizing Setup

Troubleshooting

"Nintendo 3DS/<ID0>/<ID1>/dbs/<import.db and/or title.db> does not exist on SD card!" and "Create it/them now? (type yes/no)" when using Option 1

No title database is present because you never installed any titles from eShop on this SD card.

1. Type "yes", then press Enter
2. Insert the SD card into your console
3. Power on your console
4. Navigate to System Settings -> Data Management -> Nintendo 3DS -> Software -> Reset (visual instructions)
5. Power off your console
6. Insert the SD card into your computer
7. Return to Section I Step 7

[WinError 5] Access is denied

The SD card may be write-locked. If you are using a full-size SD card, ensure that the lock is flipped in the upright position. Otherwise, try ejecting and reinserting your SD card.