Troubleshooting


For support, ask for help at #Cakey on Freenode IRC.
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If you are unable to boot your device, please look for the section relevant to you, and follow the instructions. Once a solution works for you, you can proceed on with the main guide (The section is fairly long, try using Ctrl+F to search for your issue.)

If you still cannot solve your issue and need to reach out for help, please paste the contents of all relevant .log files from the root of your SD card into a Gist, then come for help prepared with a detailed description of your problem and what you’ve tried.

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

DSi / DS functionality is broken after completing the guide

What you need

Instructions

Section I - Prep Work
  1. Create a folder named cias on the root of your SD card if it does not already exist
  2. Copy TWL Version Data - v0.cia to the /cias/ folder on your SD card
  3. Copy DS Download Play - v1024.cia to the /cias/ folder on your SD card
  4. Copy DS Internet - v2048.cia to the /cias/ folder on your SD card
  5. Copy Nintendo DS Cart Whitelist - v11264.cia to the /cias/ folder on your SD card
  6. Copy either New_3DS TWL_FIRM - v9936.cia or Old_3DS TWL_FIRM - v8817.cia to the /cias/ folder on your SD card
Section II - Installing titles
  1. Launch FBI
  2. Navigate to SD -> cias
  3. Select “<current directory>”
  4. Select “Install and delete all CIAs”
  5. Press (Home) to exit FBI

Removing an NNID without formatting your device

  1. Launch GodMode9 by pressing (A)
  2. Navigate to [1:] SYSNAND CTRNAND -> data -> (32 Character ID) -> sysdata -> 00010038
  3. Hold down the (R) trigger, then press (X) on 00000000 to rename this file
  4. Press (Up) once to change the name to 10000000
  5. Press (A) to save changes
  6. Press (A) to unlock SysNAND writing, then input the key combo given
  7. Navigate back to the Main Menu
  8. Press (Start) to reboot your device

A browser based exploit is not working

Browser based exploits (such as browserhax or 2xrsa) are often unstable and crash frequently, but they can sometimes be fixed by doing the following steps
  1. Launch the browser, then launch the browser settings
  2. Scroll to the bottom and Initialize Savedata (it also may be called Clear All Save Data)
  3. Try the exploit again

Black screen on SysNAND boot

  1. Try booting with your SD card out, and then reinserting it after booting
    1. Power off your device
    2. Remove your SD card from your device
    3. Power on your device
    4. When the home menu appears, reinsert your SD card into your device
    5. If this worked, you should clear Home Menu’s extdata by navigating to the following folder on your SD card: /Nintendo 3DS/(32 Character ID)/(32 Character ID)/extdata/00000000/
      • EUR Region: Delete 00000098
      • JPN Region: Delete 00000082
      • USA Region: Delete 0000008f
      • CHN Region: Delete 000000A1
      • KOR Region: Delete 000000A9
      • TWN Region: Delete 000000B1
  2. Try booting without any cartridges inserted (including flashcarts)
  3. If you have a hardmod and a NAND backup, flash the backup back to SysNAND
  4. Try booting into recovery mode and updating your system
    This probably will not work for an Old 3DS downgraded to 2.1.0
    This will BRICK a New 3DS downgraded to 2.1.0
    1. Power off your device
    2. Hold (L) + (R) + (A) + (Up)
    3. Power on your device
    4. If you enter safe mode, update your device only if you have an entrypoint for the latest FW version and it is possible to downgrade from it and attempt the downgrade again.
  5. Your device may be bricked. For support, ask for help at Nintendo Homebrew on Discord

Black screen on SysNAND boot after Installing boot9strap

  1. Ensure you have a working payload.
    1. Check for the existence of boot.firm in the root of your SD card.
  2. Try resetting Luma’s config and fix options
    1. Delete /luma/config.bin from your SD card
    2. Set your options when it boots
  3. Test booting GodMode9
    1. On Luma3DS, hold (Start) on boot
  4. Try deleting home menu’s extdata
    1. Clear Home Menu’s extdata by navigating to the following folder on your SD card: /Nintendo 3DS/(32 Character ID)/(32 Character ID)/extdata/00000000/
      • EUR Region: Delete 00000098
      • JPN Region: Delete 00000082
      • USA Region: Delete 0000008f
      • CHN Region: Delete 000000A1
      • KOR Region: Delete 000000A9
      • TWN Region: Delete 000000B1
  5. Try booting without any cartridges inserted (including flashcarts)
  6. If you previously downgraded with Gateway, ensure that you are using the latest Luma3DS version (v6.2.3 or higher, at the least)
  7. If your NAND is of a version between 3.0.0 and 4.5.0, do the following:
    • Ensure that you are using the latest Luma3DS version (v6.6 or higher, at the least)
    • Download this file and rename it to firmware.bin
    • Download this file
    • Copy firmware.bin and cetk to the /luma/ folder on your SD card
    • Delete both of these files after updating your device
  8. Try following 9.2.0 CTRTransfer
  9. Ask for help at Nintendo Homebrew on Discord.

Error during SafeB9SInstaller

If an error occurs during the SafeB9SInstaller process, you will be prompted to launch an external payload for the purpose of repairing your device.

What you need

Instructions

  1. Select “Unmount SD card”
  2. Insert your SD card into your computer
  3. Copy GodMode9.bin from the GodMode9 .zip to the /boot9strap/ folder on your SD card and rename GodMode9.bin in /boot9strap/ to payload.bin
  4. Reinsert your SD card into your device
  5. Select “Run 0:/CTRTransfer/payload.bin”
  6. If it was successful, you will have entered GodMode9
  7. Navigate to [0:] SDCARD -> boot9strap
  8. Press the (L) trigger on firm0firm1.bak and sector0x96.bak to mark them
  9. Press (Y) to copy the files
  10. Press (B) twice to return to the main menu
  11. Navigate to [S:] SYSNAND VIRTUAL
  12. Press (Y) to paste the files
  13. Press (A) to confirm
  14. Press (A) to inject the files
  15. Press (A) to unlock SysNAND overwriting
  16. Input the key combo given to unlock SysNAND (lvl3) writing
  17. Once it has completed, press (A) to continue
  18. Press (Start) to reboot your device
  19. Report this issue to the SafeB9SInstaller Issues Page

Blue screen on boot (bootrom error)

  1. Your device is bricked
  2. You will need to get a hardmod or repair / replace your device