Flashing ntrboot (NDS)

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Required Reading

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

Note that R4i Gold 3DS RTS flashcarts will not be able to be used for their standard functions (such as launching .nds files) while the ntrboot exploit is installed on it. This does not apply to the Acekard 2i.

There are optional steps at the end of the ntrboot boot9strap installation instructions to remove the ntrboot exploit from your flashcart when you are done.

This method requires temporary access to a Nintendo DS or Nintendo DS Lite that is compatible with your flashcart. Note that this method is not compatible with the Nintendo DSi. It is compatible with the following flashcarts:

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
  • Two devices
    • The source NDS / NDSL: the Nintendo DS or Nintendo DS Lite which is compatible with your flashcart
    • The target 3DS: the 3DS family device on stock firmware
  • The latest release of ak2i_ntrcardhax_flasher (standard flasher; not the dsi flasher)


Section I - Prep Work

  1. Power off the source NDS / NDSL
  2. Insert your flashcart’s SD card into your computer
  3. Copy ak2i_ntrcardhax_flasher.nds to your flashcart’s SD card
  4. Reinsert your flashcart’s SD card back into your flashcart
  5. Insert your ntrboot compatible DS / DSi flashcart into the source NDS / NDSL

Section II - Flashing ntrboot

  1. Launch ak2i_ntrcardhax_flasher.nds on the source NDS / NDSL using your flashcart
  2. Press (A) to continue
  3. Use (Up) and (Down) to select your flashcart
  4. Press (A) to continue
  5. Press (X) to “load flashrom”
  6. Press (A) to continue
  7. Eject your flashcart from the source NDS / NDSL
  8. Eject the SD card from your flashcart
  9. Reinsert your flashcart into the source NDS / NDSL with the SD card removed
  10. Press (A) to continue
  11. Press (A) to “inject ntrboothax”
  12. Press (X) to select “DEVKIT”
  13. Eject your flashcart from the source NDS / NDSL

Continue to Installing boot9strap (ntrboot)