---
title: "Installing boot9strap (ntrboot)"
---

#### What ye need

* A magnet that triggers the sleep mode of your device (if using a folding style device)
* Your ntrboot flashed flashcart
* Th' latest release 'o [SafeB9SInstaller](https://github.com/d0k3/SafeB9SInstaller/releases/latest)
* Th' latest release 'o [boot9strap](https://github.com/SciresM/boot9strap/releases/latest) *(standard boot9strap; not th' `devkit` file, not th' `ntr` file)*
 
* Th' latest release 'o [Luma3DS](https://github.com/AuroraWright/Luma3DS/releases/latest) *(th' `.7z` file)*
* Th' Homebrew [Starter Kit](http://smealum.github.io/ninjhax2/starter.zip)

#### Instructions

##### Section I - Set th' sails (prep work)

1. Power off ye device
1. Insert ye SD card into ye computer
1. Copy `SafeB9SInstaller.firm` to the root of your SD card and rename it to `boot.firm`
1. Copy _th' contents 'o_ `starter.zip` to th' root 'o ye SD card
1. Create a folder named `boot9strap` on th' root 'o ye SD card
1. Copy `boot9strap.firm` 'n `boot9strap.firm.sha` from th' boot9strap `.zip` to th' `/boot9strap/` folder on ye SD card

    ![]({{ base_path }}/images/screenshots/boot9strap-ntrboot-file-layout.png)
    {: .notice--info}

1. Reinsert ye SD card into ye device
1. Power on your device

##### Section II - ntrboot

1. Use the magnet to find the spot on your device where the sleep sensor is triggered
  + This step is not needed on the old 2DS (which has a sleep mode switch)
1. Power off ye device
1. Insert your flashcart into your device
1. Place the magnet on your device to trigger the sleep sensor
  + On old 2DS, you should instead enable the sleep mode switch
1. Hold (Power) + (Start) + (Select) + (X) for several seconds, then release the buttons
  + It may take a few attempts to get this to work because the positioning is awkward
1. If the exploit was successful, you will have booted into SafeB9SInstaller

##### Section III - Installing boot9strap

1. Wait fer all safety checks to be completed
1. When prompted, input th' key combo given to be installin' boot9strap
1. Once it has completed, force your device to power off by holding down the power button
  + Your device will only boot to the SafeB9SInstaller screen until the next section is completed

##### Section IV - Configurin' Luma3DS

1. Insert ye SD card into ye computer
1. Delete `boot.firm` from the root of your SD card
1. Copy `boot.firm` from th' Luma3DS `.7z` to th' root 'o ye SD card
1. Reinsert ye SD card into ye device
1. Power on your device
1. Your device should have booted into the Luma3DS configuration menu
  + If ye get a black screen, [follow 'tis troubleshootin' guide](troubleshooting#ts_sys_b9s)
1. Use th' (A) button 'n th' D-Pad to turn on th' followin':    
  + **"Show NAND or user string in System Settings"**
1. Press (Start) to save 'n reboot
  + If ye be gettin' an error, jus' continue to th' next page

___

Continue to [Finalizin' Setup](finalizing-setup)
{: .notice--primary}

___

The following are optional sections that will allow you to restore your flashcart to its original state (to allow it to be used for its standard functions).

Note that the Acekard 2i retains its ability to launch `.nds` files while having the ntrboot exploit installed. This only applies when the Acekard 2i is in a 3DS running some kind of custom firmware! While the ntrboot exploit is installed to the Acekard 2i, it will be unable to launch `.nds` files on stock NDS, NDSL, DSi, or 3DS system.

Do not follow any of these sections until you have completed the rest of the instructions on this page.

##### Section V (i) - Removing ntrboot (NDS Flasher)

1. Eject your flashcart from **the target 3DS**
1. Reinsert your flashcart into **the source NDS / NDSL** with the SD card removed
1. Press (Y) to "restore flashrom"
1. Press (B) to "EXIT"

##### Section V (ii) - Removing ntrboot (3DS Multi System)

1. Launch the Luma3DS chainloader by holding (Start) during boot on **the source 3DS**
1. Select "ntrboot_flasher"
1. Select "Restore Flash"
1. Press (Y) to proceed
1. Wait 'til th' process be completed
1. Press (B) to return to the main menu
1. Select "EXIT" to power off **the source 3DS**

##### Section V (iii) - Removing ntrboot (3DS Single System)

###### What you need

* The latest release of [ntrboot_flasher](https://github.com/kitling/ntrboot_flasher/releases/latest)
* The flashrom backup corresponding to your flashcart (and HW Rev, if applicable):
  + <i class="fa fa-magnet" aria-hidden="true" title="'Tis be a magnet link. Use a torrent client to download the file."></i> - [`R4i_Gold_3DS_(HW_A7)-Flashrom.zip`](magnet:?xt=urn:btih:fd1bc5c522988379ee931db45f82b223241ae729&dn=R4i_Gold_3DS_%28HW_A7%29-Flashrom.zip&tr=udp%3A%2F%2Ftorrent.gresille.org%3A80%2Fannounce&tr=http%3A%2F%2Ftracker1.wasabii.com.tw%3A6969%2Fannounce&tr=http%3A%2F%2Ftorrent.gresille.org%2Fannounce&tr=udp%3A%2F%2Ftracker.opentrackr.org%3A1337%2Fannounce&tr=http%3A%2F%2Ftracker.tfile.me%2Fannounce&tr=udp%3A%2F%2Ftracker.yoshi210.com%3A6969%2Fannounce&tr=udp%3A%2F%2Fexplodie.org%3A6969%2Fannounce&tr=udp%3A%2F%2Ftracker.leechers-paradise.org%3A6969%2Fannounce&tr=http%3A%2F%2Ftracker.opentrackr.org%3A1337%2Fannounce&tr=udp%3A%2F%2Ftracker.tiny-vps.com%3A6969%2Fannounce&tr=udp%3A%2F%2Ftracker.filetracker.pl%3A8089%2Fannounce&tr=udp%3A%2F%2Fzer0day.ch%3A1337%2Fannounce&tr=udp%3A%2F%2Ftracker.coppersurfer.tk%3A6969%2Fannounce&tr=udp%3A%2F%2Ftracker.aletorrenty.pl%3A2710%2Fannounce&tr=udp%3A%2F%2Fp4p.arenabg.com%3A1337%2Fannounce&tr=http%3A%2F%2Fexplodie.org%3A6969%2Fannounce&tr=udp%3A%2F%2F9.rarbg.com%3A2710%2Fannounce&tr=http%3A%2F%2Ftracker.aletorrenty.pl%3A2710%2Fannounce&tr=http%3A%2F%2Ftracker.baravik.org%3A6970%2Fannounce&tr=http%3A%2F%2Fp4p.arenabg.com%3A1337%2Fannounce) *(This is also compatible with the **R4i Gold 3DS RTS**)*
  + <i class="fa fa-magnet" aria-hidden="true" title="'Tis be a magnet link. Use a torrent client to download the file."></i> - [`R4i_Gold_3DS_(HW_A6)-Flashrom.zip`](magnet:?xt=urn:btih:ed75f8b81b78dad0d98cea59e38f3f61a80d981d&dn=R4i_Gold_3DS_%28HW_A6%29-Flashrom.zip&tr=udp%3A%2F%2Fzer0day.ch%3A1337%2Fannounce&tr=http%3A%2F%2Ftracker1.wasabii.com.tw%3A6969%2Fannounce&tr=udp%3A%2F%2Ftracker.coppersurfer.tk%3A6969%2Fannounce&tr=udp%3A%2F%2Ftracker.leechers-paradise.org%3A6969%2Fannounce&tr=udp%3A%2F%2Fp4p.arenabg.com%3A1337%2Fannounce&tr=udp%3A%2F%2Ftracker.opentrackr.org%3A1337%2Fannounce&tr=http%3A%2F%2Ftracker.baravik.org%3A6970%2Fannounce&tr=udp%3A%2F%2Ftracker.yoshi210.com%3A6969%2Fannounce&tr=udp%3A%2F%2F9.rarbg.com%3A2710%2Fannounce&tr=udp%3A%2F%2Ftracker.aletorrenty.pl%3A2710%2Fannounce&tr=http%3A%2F%2Ftracker.opentrackr.org%3A1337%2Fannounce&tr=udp%3A%2F%2Ftracker.tiny-vps.com%3A6969%2Fannounce&tr=udp%3A%2F%2Ftracker.filetracker.pl%3A8089%2Fannounce&tr=http%3A%2F%2Ftracker.aletorrenty.pl%3A2710%2Fannounce&tr=http%3A%2F%2Ftracker.tfile.me%2Fannounce&tr=http%3A%2F%2Fp4p.arenabg.com%3A1337%2Fannounce&tr=udp%3A%2F%2Ftorrent.gresille.org%3A80%2Fannounce&tr=udp%3A%2F%2Fexplodie.org%3A6969%2Fannounce&tr=http%3A%2F%2Ftorrent.gresille.org%2Fannounce&tr=http%3A%2F%2Fexplodie.org%3A6969%2Fannounce) *(This is also compatible with the **R4 3D Revolution**)*
  + <i class="fa fa-magnet" aria-hidden="true" title="'Tis be a magnet link. Use a torrent client to download the file."></i> - [`R4i_Gold_3DS_(HW_A5)-Flashrom.zip`](magnet:?xt=urn:btih:e69774d8a950879e93b18a5c1ccd36ab305b4acd&dn=R4i_Gold_3DS_%28HW_A5%29-Flashrom.zip&tr=http%3A%2F%2Ftracker1.wasabii.com.tw%3A6969%2Fannounce&tr=udp%3A%2F%2Fp4p.arenabg.com%3A1337%2Fannounce&tr=udp%3A%2F%2Ftorrent.gresille.org%3A80%2Fannounce&tr=udp%3A%2F%2Fexplodie.org%3A6969%2Fannounce&tr=udp%3A%2F%2Ftracker.opentrackr.org%3A1337%2Fannounce&tr=http%3A%2F%2Fexplodie.org%3A6969%2Fannounce&tr=udp%3A%2F%2Ftracker.leechers-paradise.org%3A6969%2Fannounce&tr=http%3A%2F%2Ftracker.opentrackr.org%3A1337%2Fannounce&tr=udp%3A%2F%2Ftracker.yoshi210.com%3A6969%2Fannounce&tr=http%3A%2F%2Fp4p.arenabg.com%3A1337%2Fannounce&tr=udp%3A%2F%2Fzer0day.ch%3A1337%2Fannounce&tr=udp%3A%2F%2Ftracker.tiny-vps.com%3A6969%2Fannounce&tr=udp%3A%2F%2Ftracker.aletorrenty.pl%3A2710%2Fannounce&tr=http%3A%2F%2Ftracker.baravik.org%3A6970%2Fannounce&tr=udp%3A%2F%2F9.rarbg.com%3A2710%2Fannounce&tr=http%3A%2F%2Ftracker.tfile.me%2Fannounce&tr=udp%3A%2F%2Ftracker.filetracker.pl%3A8089%2Fannounce&tr=udp%3A%2F%2Ftracker.coppersurfer.tk%3A6969%2Fannounce&tr=http%3A%2F%2Ftorrent.gresille.org%2Fannounce&tr=http%3A%2F%2Ftracker.aletorrenty.pl%3A2710%2Fannounce) *(This is also compatible with the **Infinity 3 R4i**)*
  + <i class="fa fa-magnet" aria-hidden="true" title="'Tis be a magnet link. Use a torrent client to download the file."></i> - `R4i_Gold_3DS_"Starter"-Flashrom.zip` -- *Missing*
  + <i class="fa fa-magnet" aria-hidden="true" title="'Tis be a magnet link. Use a torrent client to download the file."></i> - [`Acekard_2i_(HW_81)-Flashrom.zip`](magnet:?xt=urn:btih:948e6865b57fa2fc469d68df500f774a6d5887a4&dn=Acekard_2i_%28HW_81%29-Flashrom.zip&tr=udp%3A%2F%2Fexplodie.org%3A6969%2Fannounce&tr=udp%3A%2F%2Ftracker.leechers-paradise.org%3A6969%2Fannounce&tr=udp%3A%2F%2Ftracker.aletorrenty.pl%3A2710%2Fannounce&tr=udp%3A%2F%2Ftracker.opentrackr.org%3A1337%2Fannounce&tr=udp%3A%2F%2Ftorrent.gresille.org%3A80%2Fannounce&tr=udp%3A%2F%2Ftracker.yoshi210.com%3A6969%2Fannounce&tr=http%3A%2F%2Fexplodie.org%3A6969%2Fannounce&tr=udp%3A%2F%2Ftracker.coppersurfer.tk%3A6969%2Fannounce&tr=http%3A%2F%2Ftorrent.gresille.org%2Fannounce&tr=udp%3A%2F%2Ftracker.tiny-vps.com%3A6969%2Fannounce&tr=udp%3A%2F%2Fp4p.arenabg.com%3A1337%2Fannounce&tr=udp%3A%2F%2F9.rarbg.com%3A2710%2Fannounce&tr=udp%3A%2F%2Ftracker.filetracker.pl%3A8089%2Fannounce&tr=http%3A%2F%2Ftracker.baravik.org%3A6970%2Fannounce&tr=http%3A%2F%2Fp4p.arenabg.com%3A1337%2Fannounce&tr=http%3A%2F%2Ftracker.tfile.me%2Fannounce&tr=http%3A%2F%2Ftracker.aletorrenty.pl%3A2710%2Fannounce&tr=http%3A%2F%2Ftracker1.wasabii.com.tw%3A6969%2Fannounce&tr=http%3A%2F%2Ftracker.opentrackr.org%3A1337%2Fannounce&tr=udp%3A%2F%2Fzer0day.ch%3A1337%2Fannounce)
  + <i class="fa fa-magnet" aria-hidden="true" title="'Tis be a magnet link. Use a torrent client to download the file."></i> - [`Acekard_2i_(HW_44)-Flashrom.zip`](magnet:?xt=urn:btih:1f8830ce7fea3a806999734fb8a457fa3e649c1d&dn=Acekard_2i_%28HW_44%29-Flashrom.zip&tr=udp%3A%2F%2Ftorrent.gresille.org%3A80%2Fannounce&tr=udp%3A%2F%2Ftracker.filetracker.pl%3A8089%2Fannounce&tr=udp%3A%2F%2Ftracker.opentrackr.org%3A1337%2Fannounce&tr=udp%3A%2F%2Fexplodie.org%3A6969%2Fannounce&tr=udp%3A%2F%2Ftracker.yoshi210.com%3A6969%2Fannounce&tr=udp%3A%2F%2Fp4p.arenabg.com%3A1337%2Fannounce&tr=http%3A%2F%2Ftorrent.gresille.org%2Fannounce&tr=udp%3A%2F%2Ftracker.coppersurfer.tk%3A6969%2Fannounce&tr=http%3A%2F%2Ftracker.tfile.me%2Fannounce&tr=udp%3A%2F%2Ftracker.tiny-vps.com%3A6969%2Fannounce&tr=http%3A%2F%2Ftracker1.wasabii.com.tw%3A6969%2Fannounce&tr=http%3A%2F%2Ftracker.opentrackr.org%3A1337%2Fannounce&tr=http%3A%2F%2Ftracker.baravik.org%3A6970%2Fannounce&tr=http%3A%2F%2Fexplodie.org%3A6969%2Fannounce&tr=udp%3A%2F%2Fzer0day.ch%3A1337%2Fannounce&tr=udp%3A%2F%2Ftracker.leechers-paradise.org%3A6969%2Fannounce&tr=http%3A%2F%2Fp4p.arenabg.com%3A1337%2Fannounce&tr=udp%3A%2F%2Ftracker.aletorrenty.pl%3A2710%2Fannounce&tr=udp%3A%2F%2F9.rarbg.com%3A2710%2Fannounce&tr=http%3A%2F%2Ftracker.aletorrenty.pl%3A2710%2Fannounce)
  + <i class="fa fa-magnet" aria-hidden="true" title="'Tis be a magnet link. Use a torrent client to download the file."></i> - [`R4i_Ultra-Flashrom.zip`](magnet:?xt=urn:btih:614e9951a6c26145e68de34ed8c23a44bf190728&dn=R4i_Ultra-Flashrom.zip&tr=udp%3A%2F%2Ftracker.yoshi210.com%3A6969%2Fannounce&tr=udp%3A%2F%2Fexplodie.org%3A6969%2Fannounce&tr=http%3A%2F%2Ftracker.tfile.me%2Fannounce&tr=udp%3A%2F%2Ftracker.aletorrenty.pl%3A2710%2Fannounce&tr=udp%3A%2F%2Fp4p.arenabg.com%3A1337%2Fannounce&tr=udp%3A%2F%2F9.rarbg.com%3A2710%2Fannounce&tr=http%3A%2F%2Ftracker.aletorrenty.pl%3A2710%2Fannounce&tr=udp%3A%2F%2Ftracker.opentrackr.org%3A1337%2Fannounce&tr=http%3A%2F%2Fexplodie.org%3A6969%2Fannounce&tr=udp%3A%2F%2Ftracker.tiny-vps.com%3A6969%2Fannounce&tr=http%3A%2F%2Ftracker1.wasabii.com.tw%3A6969%2Fannounce&tr=udp%3A%2F%2Ftracker.leechers-paradise.org%3A6969%2Fannounce&tr=udp%3A%2F%2Ftorrent.gresille.org%3A80%2Fannounce&tr=udp%3A%2F%2Ftracker.coppersurfer.tk%3A6969%2Fannounce&tr=http%3A%2F%2Ftracker.baravik.org%3A6970%2Fannounce&tr=http%3A%2F%2Ftracker.opentrackr.org%3A1337%2Fannounce&tr=http%3A%2F%2Fp4p.arenabg.com%3A1337%2Fannounce&tr=udp%3A%2F%2Ftracker.filetracker.pl%3A8089%2Fannounce&tr=udp%3A%2F%2Fzer0day.ch%3A1337%2Fannounce&tr=http%3A%2F%2Ftorrent.gresille.org%2Fannounce)
  + If you need a backup corresponding to your specific HW Rev and did not make it earlier, the "Dump Flash" funciton of ntrboot_flasher will display it

###### Instructions

1. Power off ye device
1. Insert ye SD card into ye computer
1. Create a folder named `ntrboot` on the root of your SD card
1. Copy `backup.bin` from your flashrom backup `.zip` to the `/ntrboot/` folder on the root of your SD card
1. Create a folder named `payloads` in the `luma` folder on your SD card 
1. Copy `ntrboot_flasher.firm` from the ntrboot_flasher `.zip` to the `/luma/payloads` folder on **the source 3DS**'s SD card
1. Reinsert your SD card back into your device
1. Insert your ntrboot compatible DS / DSi flashcart into your device
1. Launch ntrboot_flasher by holding (Start) during boot
1. Select "Restore Flash"
1. Press (Y) to proceed
1. Wait 'til th' process be completed
1. Press (B) to return to the main menu
1. Select "EXIT" to power off your device