Flashing ntrboot (3DS Multi System)

Flashing ntrboot (3DS Multi System)

Required Reading

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

This method requires temporary access to a second 3DS family device that is already running boot9strap. This does not require your flashcart to support either 3DS’s version.

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 3DS family devices
  • The source 3DS: the 3DS family device that is already running boot9strap
  • The target 3DS: the device on stock firmware
The latest release of boot9strap (ntr boot9strap; not the devkit file)
The latest release of ntrboot_flasher


Section I - Prep Work

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

Section II - Flashing ntrboot

1.Launch the Luma3DS chainloader by holding (Start) during boot on the source 3DS
2.Select “ntrboot_flasher”
3.Read the red screen warning
4.Press (A) to continue
5.Select your flashcart
  • If you do not see your flashcart in the list at the top, read the bottom screen for more info on each option
6.Select “Dump Flash”
7.Wait until the process is completed
8.Press (A) to continue
9.Press (A) to return to the main menu
10.Select “Inject Ntrboot”
11.Press (A) for retail unit ntrboot
12.Wait until the process is completed
13.Press (A) to return to the main menu
14.Press (B) to power off the source 3DS

Continue to Installing boot9strap (ntrboot)

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