BannerBomb3

For support in English, ask for help at Nintendo Homebrew on Discord.
If you appreciate this guide, we accept Donations.
Technical Details (optional)

To launch custom code, we exploit a flaw in the DSiWare Data Management window of the Settings application.

To accomplish this, we use your system’s encryption key (movable.sed) to build a DSiWare backup that exploits the system.

For a more technical explanation, see here.

Compatibility Notes

These instructions work on USA, Europe, Japan, and Korea region consoles as indicated by the letters U, E, J, or K after the system version.

If you have a Taiwanese console (indicated by a T after the system version), follow this page instead.

What You Need

  • Your movable.sed file from completing Seedminer or nimhax

Section I - Prep Work

In this section, you will copy the files needed to trigger the BannerBomb3 exploit onto your device’s SD card.

  1. Power off your device
  2. Insert your SD card into your computer
  3. Open Bannerbomb3 Injector on your computer
  4. Upload your movable.sed using the “Choose File” option
  5. Click “Build and Download”
    • This will download an exploit DSiWare called F00D43D5.bin and a payload called bb3.bin inside of a zip archive (DSIWARE_EXPLOIT.zip)
  6. Copy bb3.bin from DSIWARE_EXPLOIT.zip to the root of your SD card
    • The root of the SD card refers to the initial directory on your SD card where you can see the Nintendo 3DS folder, but are not inside of it
    • This file does not need to be opened or extracted
  7. Navigate to Nintendo 3DS -> <ID0> -> <ID1> on your SD card
    • <ID0> is the 32-letter folder name that you copied in Seedminer
    • <ID1> is a 32-letter folder inside of the <ID0>
    • If you have multiple <ID1> folders, follow the instructions here
  8. Create a folder named Nintendo DSiWare inside of the <ID1>
    • If you already had the folder and there are any existing DSiWare backup files (<8-character-id>.bin) inside, copy them to your PC and remove them from your SD card
  9. Copy the F00D43D5.bin file from DSIWARE_EXPLOIT.zip to the Nintendo DSiWare folder

Section II - Hardware Button Check

In this section, you will see whether you can access Safe Mode on your device. This will determine which method you will follow on the next page.

  1. With your device still powered off, hold the following buttons: (Left Shoulder) + (Right Shoulder) + (D-Pad Up) + (A), and while holding these buttons together, power on your device
    • Keep holding the buttons until the device boots to a system update screen (this is Safe Mode)
  2. If you see the system update screen, press Cancel
    • Your device will power off
    • If the device boots to the HOME Menu, just power off your device

Next steps: Choose an exploit

If you saw the system update screen in the previous section, Safe Mode is working on your device.

If your device booted into Safe Mode, continue to Installing boot9strap (USM)

If your device did NOT boot into Safe Mode, continue to Installing boot9strap (Fredtool)