Preparation

Hardware Requirements:

• A Windows PC
• A 3DS on 9.2 or lower
• A SD Card reader or some other adapter to allow you to copy files from your PC to the SD
• A DS flashcard that works on 4.5 (R4i, etc),
• A SD Card (preferably 16 GB to hold games, but even 4 GB should work)

Software Download Links:

• Dev Menu CIA (Look for either BigBlueBox CIA or GovanifY’s CFW. Google is your friend, the file name will be either BigBlueBox.cia or DecMenu_2x.cia)
• Gateway 3.0+ Launcher.dat and DS Exploit files.
• Gateway Downgrade for your region
• Emunand Dummy Data Creator (credits to piratesephiroth) http://gbatemp.net/attachments/drag_emunand_here-zip.11716/
• Emunand Tool http://gbatemp.net/threads/emunand-tool-release-and-support-thread.359239/
• Palantine CFW http://jheberg.net/captcha/palantine-cfw-2/
• Network Scanner - http://www.nirsoft.net/utils/wireless_network_watcher.html

Part 1 - Downgrading

1. Copy the Gateway Launcher.dat and Gateway.dg file to your SD Card.
2. Turn off wifi and open the 3DS Browser. Go into the settings and delete cookies/cache.
3. Optionally, reboot your 3DS.
4. Navigate to the browser with wifi on this time, and go to go.gateway-3ds.com.
5. The exploit will now load. Go over the options using the D-Pad and backup your NAND.
6. After the NAND backup is done, power off the 3DS by holding down the power button. Put the SD Card into your computer, and copy the NAND.bin somewhere safe. This is your fail-safe, so don’t lose it!
7. Put the SD card back into the console, with the NAND.bin still on it.
8. Go run the downgrade process (it’s the last one in the menu). Wait for it to finish. Once it’s done, reboot your system. Put the SD card into the computer and ensure Launcher.dat is still on it. Do not delete NAND.bin just yet.

Part 2 - Installing CFW

1. Now, copy the GW Installer DS file to your DS flashcard. Pop it into the console and run that file from your flashcard. When it’s done, press home and go into System Settings. Go into other settings —> profile and tap DS Profile. The Gateway menu will load once again. This time, run the format emuNand process. When it’s done, shutdown your 3DS.
2. Pop the SD Card back into your PC. Run the emuNand tool you downloaded earlier and press “Extract emuNand”. Save the file as emuNand.bin somewhere.
3. Now, drag the emuNand.bin onto the bat file that was downloaded. After a while, a resulting REDNAND.bin will appear.
4. In the emuNand tool, press “Inject NAND into emuNAND”. Select the REDNAND.bin file, and just ignore the warnings about not finding NAND.bin.
5. After it’s done, delete everything on the SD card. It should only be a LAUNCHER.DAT file.
6. Now, copy everything from the SD Card folder in Palantine CFW onto the SD card. Delete the launcher.dat, and rename the launcher_gw.dat to launcher.dat
7. Insert the SD card into the console and boot up. It will create software management information. Take the SD card out again and open it on your computer.
8. Now, in your SD card, there should be a Nintendo 3DS folder. Open it, and open the folder inside that. There should be another, so open that too. You should see a exdata folder.
9. Make a new folder (not inside the exdata folder, but in the same directory as it) called “dbs”. Go into the folder and make a blank text file, named “title.db” or “import.db”. Doesn’t matter which.
10. Insert the SD back into the system and go into Settings —> Data Management —> Software. It’ll ask to reset your software management information, so allow it to do so.
11. Now, go into Other —> Profile. Hold down the L button, and tap DS Profile. If all goes well, the bottom screen will flash white and the CFW will load. If not, simply reboot the system by holding down power and trying again. Make sure to hold L while you do it.
12. Now, once you’ve gotten into CFW, you’ll need your 3DS’ IP Address. You can use the tool you downloaded earlier (the network scanner) to find the devices from Nintendo. Note the IP (usually looks like 192.168.1.1xx)
13. Edit the run.bat file in the Palantine CIA folder. Replace the DevMenu_2x.cia part with the name of your CIA, and the IPTOMODIFY with your IP.

installcia IPTOMODIFY 1 DevMenu_2x.cia

installcia 192.168.1.155 1 DevMenu_2x.cia

22. Now execute run.bat by double clicking on it. It should return result-code of 0.

• If you get a failed to connect, make sure the IP is correct and the 3DS is connected to the Internet.
• If there’s another return code, try steps 8 and onward again.

23. Once you’ve succeeded, press Power —> Home and unwrap your new gift. You can now enter the CFW without holding L using the regular way.

Installing CIAs

1. Find a CIA to install. Google is your friend.
2. Copy the CIA to your SD Card.
3. Use the standard method to get into the CFW. Open the DevMenu and import away.

 

[IndieWalrus]

Well i think i'm having a problem, how many time Devmenu takes to import?
I'm trying to import Animal crossing new leaf and DevMenu just says "Importing..."
There's a way to fix it?

FIXED: I did the same step and this time send Titlemanager(BigBlueMenu) cia to my device; the dev menu i installed was probably faulty.
Now i need to get rid of the DevMenu, anybody knows how?

 

[endoverend]

Any way to do this without even using a ds flashcard?

NO!

 

[Blinker]

Hey i need your help.
I am stuck at step 13. i know i got devmenu and right ip but when i run it it always says it can't connect. I tried on other PCs also and still nothing. Is there any other way to install cia?

 

[hunter291]

I am at part 1 of "Installing the CFW". After I tap DS Profile, my DS just restarts. The launcher.dat is still on my SD and I am on 4.5.

Edit: Ran the GW DS Installer again. After that, it worked. Don't know what was wrong the last time.

 

[master_yoda]

I think I screwed up somewhere along the way and want to start over. I've formatted the SD card, ran the DS file from the flash card but when I try to enter the DS Profile from the first step now, it gives me an error and restarts my 3DS. Help?

 

[yonex204]

I got DevMenu to install
However, I am having issues with Savedatafiler. I got the cia file to install, but everytime I try to run it i get a "The SD card has been removed" error. Any ideas how I can fix this?

 

[pastaconsumer]

So once we install devMenu or BBM or BGRM, can we flash a nand backup and keep our old titles?

 

[forbidden403]

I've follow your step and it's working perfectly.
The problem is , at the first time, I did it on 4GB SD card but I want to switch it to 16GB SD card.
Can I just simply copy every files in 4GB SD card and paste on 16GB SD card.
(In fact, I've tried the simply copy and it doesn't work.
On the other hands, I've tried from 1 step and it doesn't work too. I can't get into gateway menu)
Could you tell me what should I do now or which step I should start from?

One more question, when the CIA file is installed in my 3DS, can I delete the CIA file or I have to keep it in?

Thank you in advance

 

[ProNiteBite]

Will this work if you are downgrading from version 9.4 or is it impossible at the moment?

 

[Fusionz]

Nope, no emuNand. There's no Gateway card. This only allows a 4.x sysNand + 4.x CFW for installing CIAs that either are less than 4.5 or patched CIAs.

Hello i have a problem i'm trying to install a .CIA file via the CFW "run.bat" i made sure my ip address was right and my .cia file name was correct but i keep getting a "failed to connect error" any help?

 

[Deleted User]

,

 

[Deleted User]

.

 

[waveathon]

I'm stuck at installing cfw part 13.. already putted the Ip address and everything. maybe because when I downgraded instead of going to 4.5 it went to 4.2 is that the cause? anyone can please help me? been stuck for at least 3 hours now..

 

[mid-kid]

I'm pretty happy, it finally installed BigBlueMenu.
I accidentally forgot to press L before touching DS profile, but I pressed it just after, and it worked.
Just like everyone else trying the CFW, it "just suddently worked".
Using ctrclient.exe via WINE on Linux.

 

[SaagiBols]

thanks for the TUT=) it works:}
but i dont understand wut 4 was the following steps:

1. Pop the SD Card back into your PC. Run the emuNand tool you downloaded earlier and press “Extract emuNand”. Save the file as emuNand.bin somewhere.
2. Now, drag the emuNand.bin onto the bat file that was downloaded. After a while, a resulting REDNAND.bin will appear.
3. In the emuNand tool, press “Inject NAND into emuNAND”. Select the REDNAND.bin file, and just ignore the warnings about not finding NAND.bin.

and what should i do with those ...NAND's files????

 

[thorn_]

could i use this flash card to do this?

 

[Kross0]

I have a question, once I have everything installed, how many times I have to try to run the CFW? I mean for you succeed at first, I was playing a while but then turn it off to save another CIA in SD and now when I try to enter pulls me the message "There was an error and closed the program ... it will reset the console "
Now go several attempts but nothing, one thing that caught my attention was not I get this blue screen (top screen) showing me before

Apparently is not CFW problem, try the card EmuNand 9.4 and I feel the same (it hangs before displaying the blue screen, I return to the menu with the error and then restarts me)

sorry for my english.

 

[waveathon]

I'm confused on part 13.. how would you know the "name of your cia" to replace the devmenu_2x.cia.. please help..

 

[Ozz465]

anyone else getting this from the last steps in the bat file?
command index1
result code d9004589
write pos 3ffc0 ??

 

[KingAsix]

Would this be possible to achieve with the new Gateway Browser exploit? Could I use the launcher.dat from the CFW provided in this tutorial.