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The definitive guide to 3DS custom firmware
Prep Work:1.

R4i-B9S flashcard

2. Two SD cards (one is the source sd, another SD card has a recommended capacity of16G for installing more games)

3. A magnet (It comes with R4I-B9S kit)1

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Let’s get started. (Total 24 steps)
1. Turn off the console.
2. Insert your SD card into your computer, Copy "InstallFirm.zip" to the root of your SD
card and unzip it to the current folder. download link:
http://www.r4i-sdhc.com/down/b9s/installfirm.zip), re-insert the SD card into yourconsole.

3. Insert flashcard (R4i-B9S) into the console; place the magnet at right position(below
B button). Hold (Select) + (Start) + (X) +(Power) buttons for about 5 seconds, thenrelease the buttons. The console should boot into safeb9sinstaller.
To test if a magnet will work, hold it on or around the (A)(B)(X)(Y) buttons while thedevice is powered on to see if it triggers sleep mode. If it does, both displays will go
black as long as the magnet is held in that spot.

below B button （For old 3ds）

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4. Wait for all safety checks to complete, when prompted, input the key combo given toinstall boot9strap (should take less than a minute)

5. Once the SigHaxed FIRM installs, press A to continue. Always press "power" until theconsole power off (about 15-20 seconds).
6. Remove your SD card and insert into your computer, format SD card and Copy
"NTRPack_1.2 SD.zip" to the root of your SD card and unzip it to the current folder.
download link: http://www.r4i-sdhc.com/down/b9s/ntrpack_1.2-sd.zip ), re-insert
the SD card into your console.

7. Power on your console, the console should reboot into godmode9.

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8. Once godmode9 boots, press home, go to "More...", then "Scripts...". Select“copy_ntrboot”, and accept any prompts that pop up.

9. Once the script completes, press “R+B”, then remove the source SD and replace withtarget SD (3DS ROM will be install inside this SD card)

10. Select "[9:] RAMDRIVE" to open it.

11. Scroll to "paste_ntrboot.gm9", select it, then select "Execute GM9 script". Accept
any prompts the show up. If any error occurs, it may be an SD card contact.

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12. Once the script completes, press the start to reboot the system.

13. The console will boot into Luma3DS configuation. Check these options(press A) thenpress start:-"Show NAND or user string in System Settings"-"Patch ARM9 access" - required for 3dsx versions of homebrew like FBI

14. Once you system boots to home menu, open download play.

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15. Press “L+Down+Select” to open Rosalina. Go to "Miscellaneous options...", thenselect "Switch the hb. title to current app."

16. Once that completes, press “B” and select "Save settings", then press “B” twice toexit rosalina menu.
17. Press home, close download play, then re-open it.
18. You should now be met with a blue screen with "DSP1 - zoogie" at the time. Let it run
until it completes. Instead of pushing Start or B when prompted, press home, closethe app then power off the 3ds.

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19. Hold start and power on the console to boot into godmode9.

20. Once godmode9 boots, press home, select "More...", then select "Scripts..."21. Select “finalize” and follow any prompts or instructions it gives, accepting them all.

22. When asked to “relock”, accept.

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23. If you wish to make a nand backup (some users may not have enough space to do so),go back to the "Scripts..." once more and run "Backup SysNAND"

24. Press start to reboot the console, open download play, you will find the console canrun the 3ds CFW now.

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9How to Install and Play 3DS ROM
1. Download 3DS ROM and copy into target SD card (copied to root or create a directory
named “games” for ease of management).

2. Convert 3DS ROM format to CIA. If download 3DS ROM was CIA format then skip thisstep.

a. Turn off the console. Hold START + POWER few second to restart console,
select“SD CARD” from main menu.

b. Explore the “SD CARD” and select the copied 3DS ROM file.

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C. Press A to select “NSCD Image option” and choose “BUILD CIA from File” toconvert 3DS ROM to CIA format. It will take couple of minutes depend to file size.
If 3DS ROM format is CIA, skip step 2.

3. Install and play CIA format 3DS ROM.

a. Power up console normally, open “down play”. Launch “FBI” homebrew frommenu.

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11b. First time launch of FBI homebrew need to configure the file path. Recommend
using default path. Generate CIA file locate at “gm9/out”. Select the CIA file andpress A to enter.

c. If select “Install CIA”, CIA file will be keep after installation. If select”Install andDelete CIA” the CIA file will be automatic delete after installation. After convert
to CIA, original 3DS ROM file can be deleted. This can be done by using FBI orusing laptop PC. To save space of SD card default was “Install and Delete CIA”

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d. Press “B” twice to FBI main menu after CIA installation, select “Title” and choose“launch” the installed 3DS games.

e. Press HOME return to device main menu, installed games icon will be shown.

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