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The file boot.firm is what is launched by boot9strap itself after it finishes loading off of NAND. In this case, we are using Luma3DS by LumaTeam to patch the device, allowing it to run homebrew software.

On this page, we will make critical system file backups and install the following homebrew programs:

  • FBI (installs CIA formatted applications)
  • Anemone3DS (asentaa mukautettuja teemoja)
  • Checkpoint (varmuuskopioi ja palauttaa 3DS- ja DS-pelien tallennuksia)
  • Universal-Updater (a homebrew app store for downloading homebrew from the 3DS over Wi-Fi)
  • GodMode9 (monikäyttöinen työkalu, jolla voi tehdä NANDiin ja pelikorttiin liittyviä toimintoja)
  • Homebrew Launcher Loader (avaa Homebrew Launcherin)

It is not recommended to skip downloading any of these applications, as many of them will be used later on this page. At the end of this page, your SD card will be cleaned up by removing unnecessary installation files.

Compatibility Notes

If your New 3DS was on version 2.1.0 before following this guide, you should restore your NAND backup before continuing.

If your previous CFW setup was EmuNAND-based and you wish to move the contents of your EmuNAND/RedNAND to SysNAND, follow Move EmuNAND before following this page. If you don’t know what an EmuNAND is, this doesn’t apply to you.



Vaihe I – Valmistelut

In this section, you will copy the files necessary to follow the rest of the instructions on this page.

  1. Sammuta konsolisi
  2. Aseta SD-korttisi tietokoneeseesi
  3. Luo cias‑niminen kansio SD‑korttisi juureen, jos sitä ei jo ole olemassa
  4. Copy all of the CIA files (Anemone3DS.cia, Checkpoint.cia, FBI.cia, Homebrew_Launcher.cia, and Universal-Updater.cia) to the /cias/ folder on your SD card
  5. Luo 3ds‑niminen kansio SD‑korttisi juureen, jos sitä ei jo ole olemassa
    • This folder stores homebrew applications and data; it is different from the Nintendo 3DS folder that the device automatically generates
  6. Kopioi FBI.3dsx SD-korttisi /3ds/-kansioon
  7. Luo payloads‑niminen kansio SD‑korttisi luma-kansioon, jos sitä ei jo ole olemassa
  8. Kopioi GodMode9‑.zip‑pakkauksesta GodMode9.firm SD-korttisi /luma/payloads/‑kansioon
  9. Kopioi gm9-kansio SD-korttisi juureen
  10. Aseta SD-korttisi takaisin konsoliisi
  11. Käynnistä konsolisi

The screenshots below indicate the minimum SD card layout that is required to follow this page. You may have extra files or folders on your SD card, depending on your previous setup or the method that you followed.

Vaihe II – Järjestelmän päivittäminen

In this section, you will update your system to the latest version, which is safe to do with custom firmware.

  1. Päivitä konsolisi menemällä järjestelmäasetuksiin (System Settings), valitse muut asetukset (Other Settings) ja sitten järjestelmäpäivitys (System Update) viimeiseltä sivulta
    • Päivitykset B9S + Luma -kokoonpanolla (joka sinulla on) ovat turvallisia
    • The updater may display a message saying “Your system is up to date” instead of updating. This is normal if you are already up to date; continue with the next section
    • If this gives you an error, set both your DNS settings and Proxy settings to “auto”
    • If this still gives you an error, follow this troubleshooting guide

Section III - Homebrew Launcher

In this section, you will temporarily replace Download Play with Homebrew Launcher (which we need to launch FBI). Download Play will automatically go back to normal once you reboot your device.

  1. Launch the Download Play application ()
  2. Wait until you see the Nintendo 3DS and Nintendo DS buttons
  3. Press (Left Shoulder) + (D-Pad Down) + (Select) at the same time to open the Rosalina menu
  4. Valitse “Miscellaneous options”
  5. Valitse “Switch the hb. title to the current app.”
  6. Paina (B):tä jatkaaksesi
  7. Paina (B):tä palataksesi Rosalinan päävalikkoon
  8. Paina (B):tä poistuaksesi Rosalina-valikosta
  9. Paina (HOME)-painiketta ja sulje Download Play
  10. Avaa Download Play -sovellus
  11. Konsolisi pitäisi avata Homebrew Launcher

Section IV - RTC and DSP Setup

In this section, you will sync your 3DS internal clock with the actual time and dump the sound firmware (which is necesssary for some homebrew software to use sound properly).

  1. Press (Left Shoulder) + (D-Pad Down) + (Select) at the same time to open the Rosalina menu
  2. Valitse “Miscellaneous options”
  3. Select “Dump DSP firmware”
  4. Paina (B):tä jatkaaksesi
  5. Select “Nullify user time offset”
  6. Paina (B):tä jatkaaksesi
  7. Paina (B):tä palataksesi Rosalinan päävalikkoon
  8. Paina (B):tä poistuaksesi Rosalina-valikosta

Section V - Installing CIAs

In this section, you will install several useful homebrew applications to HOME Menu.

  1. Avaa FBI homebrew-listasta
  2. Mene hakemistoon SDcias
  3. Valitse “<current directory>”
  4. Valitse “Install and delete all CIAs” ja paina (A):ta vahvistaaksesi
  5. Paina (HOME)-painiketta ja sulje Download Play

Vaihe VI – Luma3DS:n asentaminen CTRNANDiin

In this section, you will use a script to copy some of Luma3DS’s files to internal memory so that they can be accessed, even without an SD card inserted.

  1. Sammuta konsolisi
  2. Press and hold (Start), and while holding (Start), power on your device. This will launch GodMode9
    • If you do not boot into GodMode9, ensure that GodMode9.firm is in /luma/payloads/ and that payloads is correctly spelled
  3. Jos ohjelma kehottaa luomaan varmuuskopion tärkeistä tiedostoista (essential files), paina (A):ta tehdäksesi sen, ja kun varmuuskopio on valmis, paina (A):ta uudelleen jatkaaksesi
  4. Jos sinua kehotetaan korjaamaan RTC-aika ja -päivämäärä, paina (A):ta ja aseta ne oikein, paina sitten (A):ta jatkaaksesi
  5. Paina (HOME)-painiketta näyttääksesi toimintovalikon
  6. Valitse “Scripts…”
  7. Select “GM9Megascript”
  8. Select “Scripts from Plailect’s Guide”
  9. Select “Setup Luma3DS to CTRNAND”
  10. Paina kehotettaessa (A):ta jatkaaksesi
  11. Paina (A):ta ottaaksesi käyttöön SysNANDiin kirjoittamisen (lvl1) ja syötä annettu painikeyhdistelmä
  12. Paina (A):ta jatkaaksesi

Section VII - Cleanup SD Card

In this section, you will use a script to remove some unnecessary files from your SD card.

  1. Select “Cleanup SD Card”
  2. Paina kehotettaessa (A):ta jatkaaksesi
  3. Paina (A):ta jatkaaksesi
  4. Paina (B):tä palataksesi päävalikkoon

Section VIII - Backup Essential Files

In this section, you will make backups of files that can be used to recover from software bricks or to recover data.

  1. Select “Backup Options”
  2. Select “SysNAND Backup”
  3. Paina (A):ta vahvistaaksesi
    • Tämä prosessi voi kestää jonkin aikaa
    • If you get an error, make sure that you have at least 1.3GB of free space on your SD card
  4. Paina (A):ta jatkaaksesi
  5. Paina (B):tä palataksesi päävalikkoon
  6. Select “Exit”
  7. Paina (A):ta lukitaksesi kirjoitusoikeudet kehotettaessa
  8. Navigate to [S:] SYSNAND VIRTUAL
  9. Press (A) on essential.exefs to select it
  10. Select “Copy to 0:/gm9/out”
    • If you see “Destination already exists”, press (A) on “Overwrite file(s)”
  11. Paina (A):ta jatkaaksesi
  12. Paina (HOME)-painiketta näyttääksesi toimintovalikon
  13. Select “Poweroff system” to power off your device
  14. Aseta SD-korttisi tietokoneeseesi
  15. Copy <date>_<serialnumber>_sysnand_###.bin, <date>_<serialnumber>_sysnand_###.bin.sha, and essential.exefs from the /gm9/out/ folder on your SD card to a safe location on your computer
    • Copy these backups to multiple locations (such as online file storage, an external hard drive, etc.)
    • Nämä varmuuskopiot pelastavat sinut konsolin vioittumiselta ja/tai auttavat palauttamaan tiedostoja NAND-näköistiedostosta, jos jokin menee pieleen tulevaisuudessa
  16. Kun olet varmuuskopioinut NANDin, poista <päivämäärä>_<sarjanumero>_sysnand_###.bin ja <päivämäärä>_<sarjanumero>_sysnand_###.bin.sha SD-korttisi /gm9/out/-kansiosta
    • The other backup files are negligible in size and may be kept on your SD card for ease of access
  17. If you have it, copy the /luma/backups/ folder on your SD card to a safe location on your computer
  18. Aseta SD-korttisi takaisin konsoliisi
  19. Käynnistä konsolisi

You’re done! Custom firmware is now fully configured on your device.

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Information and Notes

Here are some key combos that you should know:

  • Holding (Select) on boot will launch the Luma3DS configuration menu.
  • Holding (Start) on boot will launch GodMode9, or if you have multiple payloads in /luma/payloads/, the Luma3DS chainloader.
  • By default, pressing (Left Shoulder) + (Down D-Pad) + (Select) while in 3DS mode will open the Rosalina menu, where you can check system information, take screenshots, enable cheats, and more. This can be changed from the Rosalina menu.
  • Holding (Start) + (Select) + (X) on boot will make the notification LED show a color for debug purposes. See the changelog for a list.

See here for some suggestions on things to do with custom firmware.

For information on using GodMode9’s various features, check out the GodMode9 Usage and Dumping Titles and Game Cartridges pages.