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 console, allowing it to run homebrew software.
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On this page, we will make critical system file backups and install the following homebrew programs:
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On this page, we will make critical system file backups and install some homebrew programs. Most of these steps will be automated using a script that you will run on your console.
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+List of homebrew applications that will be installed
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Click the links to view the GitHub repository of each application. (Give them a star if you appreciate them!)
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FBI(installs CIA formatted applications)
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Anemone3DS(installs custom themes)
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Checkpoint(backs up and restores save files for 3DS and DS games)
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Universal-Updater(a homebrew app store for downloading homebrew from the 3DS over Wi-Fi)
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GodMode9(multipurpose tool which can do NAND and cartridge functions)
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Homebrew Launcher Loader(launches the Homebrew Launcher)
Universal-Updater(a homebrew app store for downloading homebrew from the 3DS over Wi-Fi)
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GodMode9(multipurpose tool which can do NAND and cartridge functions)
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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.
Create a folder named cias on the root of your SD card if it does not already exist
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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
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Create a folder named 3ds on the root of your SD card if it does not already exist
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This folder stores homebrew applications and data; it is different from the Nintendo 3DS folder that the console automatically generates
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Copy FBI.3dsx to the /3ds/ folder on your SD card
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Create a folder named payloads in the luma folder on your SD card if it does not already exist
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Copy GodMode9.firm from the GodMode9 .zip to the /luma/payloads/ folder on your SD card
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Copy the gm9 folder from the GodMode9 .zip to the root of your SD card
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Reinsert your SD card into your console
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Power on your console
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Copy the contents of finalize.zip to the root of your SD card, merging/replacing any existing folders if prompted
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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.
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The screenshot below indicates 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.
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Section II - CFW Check
As an additional safety measure, we will perform an additional check for custom firmware. If custom firmware is not installed by this point for any reason, the next section may render your console unable to be hacked without external hardware.
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 console.
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Launch the Download Play application ()
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Wait until you see the Nintendo 3DS and Nintendo DS buttons
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Press (Left Shoulder) + (D-Pad Down) + (Select) at the same time to open the Rosalina menu
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Select “Miscellaneous options”
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Select “Switch the hb. title to the current app.”
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Press (B) to continue
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Press (B) to return to the Rosalina main menu
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Press (B) to exit the Rosalina menu
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Press (Home) to suspend Download Play
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Press the “Close” button on the bottom screen to close Download Play
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Re-launch the Download Play application
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Your console should load the Homebrew Launcher
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If your console is stuck on the loading splash screen, you are missing boot.3dsx from the root of your SD card
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Section V - RTC and DSP Setup
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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).
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Press (Left Shoulder) + (D-Pad Down) + (Select) at the same time to open the Rosalina menu
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Press (Left Shoulder) + (D-Pad Down) + (Select) at the same time to open the Rosalina menu
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If one of these buttons is broken, download config.ini and put it in your luma folder, replacing the existing one. This will change the Rosalina menu key combination to (X) + (Y)
In this section, you will install several useful homebrew applications to HOME Menu.
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Launch FBI from the list of homebrew
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Navigate to SD -> cias
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Select “<current directory>”
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Select the “Install and delete all CIAs” option, then press (A) to confirm
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Press (Home), then close Download Play
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Section VII - CTRNAND Luma3DS
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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.
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In this section, you will use a script to automate homebrew installation, SD card cleanup, and system file backup.
If you encounter an error, follow the instructions in the error message or consult the troubleshooting page
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Press (A) to continue
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Press (B) to return to the main menu
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Select “Exit”
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Press (A) to relock write permissions if prompted
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Navigate to [S:] SYSNAND VIRTUAL
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Press (A) on essential.exefs to select it
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Select “Copy to 0:/gm9/out”
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If you see “Destination already exists”, press (A) on “Overwrite file(s)”
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Press (A) to continue
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Press (Home) to bring up the action menu
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Select “Poweroff system” to power off your console
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Insert your SD card into your computer
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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
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Copy these backups to multiple locations (such as online file storage, an external hard drive, etc.)
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These backups will save you from a brick and/or help you recover files from the NAND image if anything goes wrong in the future
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Delete <date>_<serialnumber>_sysnand_##.bin and <date>_<serialnumber>_sysnand_##.bin.sha from the /gm9/out/ folder on your SD card after copying it
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The other backup files are negligible in size and may be kept on your SD card for ease of access
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If you have it, copy the /luma/backups/ folder on your SD card to a safe location on your computer
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Reinsert your SD card into your console
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Power on your console
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Once the script says “Setup complete!”, press (A) to power off the device
diff --git a/images/screenshots/finalizing-root-layout.png b/images/screenshots/finalizing-root-layout.png
index dd8f4756d1..eb7ef44963 100644
Binary files a/images/screenshots/finalizing-root-layout.png and b/images/screenshots/finalizing-root-layout.png differ
diff --git a/troubleshooting.html b/troubleshooting.html
index b0649d5595..d210e39089 100644
--- a/troubleshooting.html
+++ b/troubleshooting.html
@@ -974,25 +974,63 @@ window.cookieconsent.initialise({
-Unable to enter Rosalina menu due to broken Left Shoulder / Down D-Pad / Select button(s)
+Error #01: No Nintendo 3DS folder
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Your SD card does not have the Nintendo 3DS folder. Power on your device with your SD card inserted, then wait for the device to show a message box that says “Creating HOME Menu management information”. Once the message box disappears, power off your device and try again.
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Download this alternate config.ini and place it in /luma/. This will change the Rosalina key combination to (X) + (Y).
-"An exception occurred" or infinite "Nintendo 3DS" screen after trying to launch Homebrew Launcher from Download Play
+Error #02: Missing essential.exefs
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You said ‘No’ to the “Make essential files backup?” prompt in GodMode9. Power off your device, power it on while holding (Start) to re-enter GodMode9, say ‘Yes’ to the prompt, then try again.
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There is an issue with your boot.3dsx file (it is missing, misplaced, or corrupted). Download the latest release of the Homebrew Launcher and place boot.3dsx on the root of your SD card, replacing any existing file.
-"Scripts directory not found" in GodMode9
+Unable to open GodMode9 or Error #03: Missing files
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You did not copy everything from finalize.zip to the root of your SD card. Remember, your SD card should have at least these files:
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You did not copy the gm9 folder from the GodMode9 .zip to the root of your SD card. Download the latest release of GodMode9 and place the gm9 folder on the root of your SD card, merging it with the existing one.
-"Backup failed" or "Error: Could not open directory" when attempting a NAND backup
+Error #04: No space
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You need at least 1.3GB of free space to perform the NAND backup, which is apart of the script. If you don’t have enough space, follow these steps:
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Power off your console
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Remove the SD card and insert it into your computer
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Copy the Nintendo 3DS folder from the root of your SD card to your computer
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Delete the Nintendo 3DS folder from the SD card
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Reinsert your SD card into your console
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Power off your console, hold START and power on still holding START to boot on GodMode9
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Select “Scripts…”
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Select “finalize”
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Follow the prompts in the script, answering each question that you are asked
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Copy the files in gm9/out on your SD to a safe location on your computer
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Delete the <date>_<serialnumber>_sysnand_##.bin and <date>_<serialnumber>_sysnand_##.bin.sha files from the SD card, keeping essential.exefs in /gm9/out/
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Copy the Nintendo 3DS folder from your computer to the root of your SD card
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Delete the Nintendo 3DS folder from your computer
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Once done, re-run the script.
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+Error #05: No title database
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Press (A) to create a title database, follow the prompts here, then re-run the script.
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+Error #06 or "Error: Could not open directory" when attempting a NAND backup
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Make sure you have at least 1.3GB available in your SD card. If you don’t have enough space, follow these steps:
If you have enough space on your SD card, your SD might be corrupted or faulty. Check your SD card for any errors by following the guide according to your computer’s operating system: Windows, Linux, macOS.
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+Error #08: Dummy title database
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You didn’t delete the dummy title database that was created by Error #05. Follow the prompts here, then re-run the script.