Installing boot9strap (DSiWare Save Injection)


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Required Reading

Note that if you have any payload files other than GodMode9.firm in the /luma/payloads/ folder on your SD card, holding (Start) on boot will display a “chainloader menu” where you will have to use the D-Pad and the (A) button to select “GodMode9” for these instructions.

To use the magnet links on this page, you will need a torrent client like Deluge.

To extract the .7z files linked on this page, you will need a file archiver like 7-Zip or The Unarchiver.

If you do not use the correct .firm corresponding to the target 3DS, you will BRICK! Ensure you download and use the correct one!

What You Need

  • Two 3DS family devices
    • The source 3DS: the device running boot9strap on the latest version
    • The target 3DS: the device on stock firmware on 11.9.0
  • Already own one of the following exploitable DSiWare games (a pirated copy of the game will not work) on the source 3DS
    • Fieldrunners
    • Legends of Exidia
    • Guitar Rock Tour
    • The Legend of Zelda: Four Swords
  • The latest release of 3ds_dsiwarehax_installer
  • The latest release of GodMode9
  • The latest release of b9sTool
  • The latest release of Luma3DS (the .7z file)
  • The latest release of the Homebrew Launcher

Instructions

Section I - Prep Work

Use a save manager to backup any saves you care about on the target 3DS (it will be formatted!)

  1. Copy GodMode9.firm from the GodMode9 .zip to the /luma/payloads/ folder on the source 3DS’s SD card
  2. Copy the gm9 folder from the GodMode9 .zip to the root of the source 3DS’s SD card
  3. Copy the relevant public.sav from the /dsiware/<8-character-id>/ folder in the 3ds_dsiwarehax_installer .zip to the root of the source 3DS’s SD card
    • Fieldrunners USA Region: 4b464445
    • Fieldrunners EUR Region: 4b464456
    • Legends of Exidia USA Region: 4b4c4545
    • Legends of Exidia EUR Region: 4b4c4556
    • Legends of Exidia JPN Region: 4b4c454a
    • Guitar Rock Tour EUR Region: 4b475256
    • Guitar Rock Tour USA Region: 4b475245
    • The Legend of Zelda: Four Swords EUR Region: 4b513956  
    • The Legend of Zelda: Four Swords USA Region: 4b513945  
  4. Reinsert the source 3DS’s SD card
  5. Boot the source 3DS while holding (Start) to launch GodMode9
  6. Press (Home) to bring up the action menu
  7. Select “Scripts…”
  8. Select “GM9Megascript”
  9. Select “Backup Options”
  10. Select “SysNAND Backup”
  11. Press (A) to confirm
    • This process will take some time
    • If you get an error, make sure that you have at least 1.3GB of free space on your SD card
  12. Press (A) to continue
  13. Press (B) to return to the main menu
  14. Select “Exit”
  15. Press (A) to relock write permissions if prompted
  16. Hold (R) and press (B) at the same time to eject the source 3DS’s SD card
  17. Put the source 3DS’s SD card into your computer
  18. Put the target 3DS’s SD card into your computer
  19. Backup every file on both 3DS’s SD cards to two separate folders on your computer (keep track of which is which)!
  20. Reinsert each SD card back into their corresponding 3DS
  21. Press (Start) on the source 3DS to reboot

Section II - Installing the Save

  1. Boot the source 3DS while holding (Start) to launch GodMode9
  2. Navigate to [0:] SDCARD
  3. Press (Y) on public.sav to copy it
  4. Press (B) to get back to the main menu
  5. Navigate to SYSNAND TWLN -> title -> 00030004
  6. Navigate to the folder for your game and region:
    • Fieldrunners USA Region: 4b464445
    • Fieldrunners EUR Region: 4b464456
    • Legends of Exidia USA Region: 4b4c4545
    • Legends of Exidia EUR Region: 4b4c4556
    • Legends of Exidia JPN Region: 4b4c454a
    • Guitar Rock Tour EUR Region: 4b475256
    • Guitar Rock Tour USA Region: 4b475245
    • The Legend of Zelda: Four Swords EUR Region: 4b513956  
    • The Legend of Zelda: Four Swords USA Region: 4b513945  
  7. Navigate to the data folder
  8. Press (X) on the existing public.sav to delete it
  9. Input the key combo given to unlock SysNAND (lvl1) writing
  10. Press (A) to continue
  11. Press (B) to decline relocking write permissions if prompted
  12. Press (Y) to paste public.sav
  13. Select “Copy path(s)”
  14. Press (Start) to reboot the source 3DS
  15. Launch your DSiWare game on the source 3DS
  16. Test if the save is functional
    • Fieldrunners: Touch the ‘Scores’ button at the main menu
    • Legends of Exidia: After pressing (A) or (Start) at the two title screens, select the first save slot and press continue
    • Guitar Rock Tour: Scroll down and go to High-Scores -> Drums -> Easy
    • The Legend of Zelda: Four Swords: Just start the game
    • If your game has an error about boot.nds or a white screen, then the exploit has been successful
    • If your game behaves normally and does not give you this error, then you should stop and figure out what went wrong
    • If you get a black screen, follow this troubleshooting guide

Section III - System Transfer

  1. Backup every file on both 3DS’s SD cards to two separate folders on your computer (keep track of which is which)!
  2. Reinsert each SD card back into their corresponding 3DS
  3. If the target 3DS has a Nintendo Network ID on it, you must format the device using System Settings:
    • Go to the last page of “Other Settings” and select “Format System Memory”, then follow all instructions
  4. Read the following:
    • Your CFW 3DS = the source 3DS = “Source System”
    • Your Stock 3DS = the target 3DS = “Target System”
    • Move DSiWare titles if prompted!
    • Do NOT delete the source system’s SD card contents if prompted
    • Make sure neither device’s battery dies during the transfer
    • Old 3DS or Old 2DS (source) to New 3DS or New 2DS (target) only: if asked which method you wish to use to transfer the SD card data:
    • Do NOT choose the “Low-Capacity microSD Card Transfer” or minimal option (option 2), it will only transfer tickets and likely will not transfer the DSiWare save.
    • Fast Method: If you have the ability to move the data from the SD card (source) to the microSD card (target), when prompted use the “PC-Based Transfer” option (option 3).
    • Slowest Method: If you don’t have the ability to move the data on a PC use the full “Wireless Transfer” option (option 1).
  5. Go to this link and follow Nintendo’s official instructions for System Transferring from one system to another while keeping in mind what you just read

Section IV - Restoring the source 3DS

  1. On the source 3DS, complete initial setup
  2. Do one of the following
    • Do the rest of the sections and then the full guide on the target 3DS, then wait one week (do not restore your NAND backup before system transferring), then System Transfer from the target 3DS back to the source 3DS (remember you cannot transfer back from a New 3DS or New 2DS to an Old 3DS or Old 2DS)
    • Call Nintendo and tell them you no longer have access to the device that your NNID is linked to (which is the target 3DS in this case), and would like it linked to a different device (which is the source 3DS in this case)
    • You can also just remove the NNID from the source 3DS if you’d prefer it remain on the target 3DS
  3. Reboot the source 3DS while holding (Start) to launch GodMode9
  4. If you are prompted to create an essential files backup, press (A) to do so, then press (A) to continue once it has completed
  5. If you are prompted to fix the RTC date&time, press (A) to do so, then set the date and time, then press (A) to continue
    • Note that, if you had to fix the RTC date and time, you will have to fix the time in the System Settings as well after this guide
  6. Navigate to [0:] SDCARD -> gm9 -> out
  7. Press (A) on <date>_<serialnumber>_sysnand_###.bin to select it, then select “NAND image options…”, then select “Restore SysNAND (safe)”
  8. Press (A) to unlock SysNAND overwriting, then input the key combo given
    • This will not overwrite your boot9strap installation
  9. Input the key combo given to unlock SysNAND (lvl1) writing
    • This process will take some time
  10. Once it has completed, press (A) to continue
  11. Press (A) to relock write permissions if prompted
  12. Press (Start) to reboot the source 3DS

Section V - Flashing the target 3DS’s FIRM

  1. Copy boot.firm from the Luma3DS .7z to the root of the target 3DS’s SD card
  2. Copy boot.nds (B9STool) to the root of the target 3DS’s SD card
  3. Copy boot.3dsx to the root of the target 3DS’s SD card
  4. Launch your DSiWare game on the target 3DS
  5. Launch b9sTool using your DSiWare game
    • Fieldrunners: Touch the ‘Scores’ button at the main menu
    • Legends of Exidia: After pressing (A) or (Start) at the two title screens, select the first save slot and press continue
    • Guitar Rock Tour: Scroll down and go to High-Scores -> Drums -> Easy
    • The Legend of Zelda: Four Swords: Just start the game
  6. Select “Install boot9strap” and confirm
  7. Exit b9sTool, then power off your device

Section VI - Configuring Luma3DS

  1. Boot the target 3DS while holding (Select) to launch the Luma configuration menu
  2. Use the (A) button and the D-Pad to turn on the following:
    • “Show NAND or user string in System Settings”
  3. Press (Start) to save and reboot
    • If you get an error, just continue the next page

Continue to Finalizing Setup