Guide_3DS/docs/flashing-ntrboot-(3ds-multi-system).md

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# Flashing ntrboot (3DS Multi System)
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## Required Reading
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Before proceeding, ensure you have read all of the information on [ntrboot](ntrboot).
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This method requires temporary access to a second 3DS family console that is already running boot9strap. This does not require your flashcart to support either 3DS's version.
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::: danger
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](https://www.nds-card.com/)).
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:::
## What You Need
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* Your ntrboot compatible flashcart
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* Two 3DS family consoles
* **The source 3DS**: the 3DS family console that is already running boot9strap
* **The target 3DS**: the 3DS family console on stock firmware
* The v1.3 release of [boot9strap-ntr](https://github.com/SciresM/boot9strap/releases/download/1.3/boot9strap-1.3-ntr.zip) (direct download)
* The latest release of [ntrboot_flasher](https://github.com/ntrteam/ntrboot_flasher/releases/latest) (`ntrboot_flasher.firm`)
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## Instructions
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### Section I - Prep Work
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1. Power off **the source 3DS**
1. Insert **the source 3DS**'s SD card into your computer
1. Create a folder named `ntrboot` on the root of your SD card
1. Copy `boot9strap_ntr.firm` and `boot9strap_ntr.firm.sha` from the boot9strap ntr `.zip` to the `/ntrboot/` folder on your SD card
1. Copy `ntrboot_flasher.firm` to the `/luma/payloads/` folder on **the source 3DS**'s SD card
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1. Reinsert **the source 3DS**'s SD card back into **the source 3DS**
1. Insert your ntrboot compatible DS / DSi flashcart into **the source 3DS**
### Section II - Flashing ntrboot
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1. Launch the Luma3DS chainloader by holding (Start) during boot on **the source 3DS**
1. Select "ntrboot_flasher"
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1. Read the red screen warning
1. Press (A) to continue
1. 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
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1. Select "Dump Flash"
1. Wait until the process is completed
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1. Press (A) to continue
1. Press (A) to return to the main menu
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1. Select "Inject Ntrboot"
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1. Press (A) for retail unit ntrboot
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1. Wait until the process is completed
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1. Press (A) to return to the main menu
1. Press (B) to power off **the source 3DS**
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___
::: tip
Continue to [Installing boot9strap (ntrboot)](installing-boot9strap-(ntrboot))
:::