Flashing ntrboot (3DS Single System)

Flashing ntrboot (3DS Single System)

Required Reading

Before proceeding, ensure you have read all of the information on ntrboot

This method requires nothing more than your stock unhacked 3DS and a compatible flashcart. This method uses the flashcart to run the ntrboot flasher .nds file on your 3DS. This means that your flashcart must support launching .nds files on your 3DS’s version. See the flashcart table on ntrboot for more information.

Note that in some rare circumstances, it may be possible for the flashing process to brick a counterfeit flashcart and render it permanently unusable. This is unlikely, but nevertheless only original listed flashcarts are supported. To reduce the chance of receiving a counterfeit card, it is recommended that you use a reputable site to buy your flashcart (such as NDS Card)

What You Need

  • Your ntrboot compatible flashcart
  • The latest release of boot9strap (ntr boot9strap; not the devkit file)
  • The latest release of ds_ntrboot_flasher


Section I - Prep Work

  1. Power off your device
  2. Insert your flashcart’s SD card into your computer
  3. Create a folder named ntrboot on the root of your flashcart’s SD card
  4. Copy boot9strap_ntr.firm from the boot9strap ntr .zip to the /ntrboot/ folder on your flashcart’s SD card
  5. Copy ntrboot_flasher_nds.nds to your flashcart’s SD card
  6. Reinsert your flashcart’s SD card back into your flashcart
  7. Insert your ntrboot compatible DS / DSi flashcart into your device

Section II - Flashing ntrboot

  1. Launch ntrboot_flasher_nds.nds on your device using your flashcart
  2. Press (A) to continue
  3. Use (Up) and (Down) to select your flashcart
  4. Press (A) to continue
  5. Select “Dump flash” to make a backup of your flashcart’s memory
  6. Input the key combo given to confirm
  7. Press (A) to continue
  8. Use (Up) and (Down) to select your flashcart
  9. Press (A) to continue
  10. Select “Inject FIRM” to install boot9strap to your flashcart
  11. Input the key combo given to confirm
  12. Press (A) to continue
  13. Power off your device

Continue to Installing boot9strap (ntrboot)

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