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.

 

[jhiean]

before you touch the nintendo DS profile hold the L button until it loads to the CFW then go to internet browser browse google.com somthing like that then run the run.bat on computer that should work

 

[TotalInsanity4]

Question; 2DS user here, so I can't downgrade all the way to 4.5. However, is there a 7.x or 8.x downgrade file lying around somewhere?? (I already have an EmuNAND, but I would like to make it so my SysNAND doesn't have a theme for easier identification, as my NANDs are linked, so I can't just remove the theme)

 

[jhiean]

there is no downgrade file for 7.x or 8.x only 4.x have downgrade file.. look here https://gbatemp.net/threads/gateway-downgrading.378195/

 

[TotalInsanity4]

there is no downgrade file for 7.x or 8.x only 4.x have downgrade file.. look here https://gbatemp.net/threads/gateway-downgrading.378195/

Nuts oh well, thanks for the reply!

 

[mechagouki]

before you touch the nintendo DS profile hold the L button until it loads to the CFW then go to internet browser browse google.com somthing like that then run the run.bat on computer that should work

Finally got into CFW after 30+ attempts, tried the browser thing - still no dice...

Anything else I should try, or should I go back and redo some steps?

 

[TotalInsanity4]

Finally got into CFW after 30+ attempts, tried the browser thing - still no dice...

Anything else I should try, or should I go back and redo some steps?

Clear your cookies and history first

 

[Jpp]

Works wonders, just done this on a friend's old 3DS red EUR 8.1.0!

So, only Legit (4.x spoofed) CIA's will work on this (emu)RedNand, right?
There is no way to load random CIA's atm, right?


Edit:


You could try removing the pre-downloaded update:
https://gbatemp.net/threads/guide-delete-predownloaded-update-spotpass-nag.381489/
And then start the browser on 4.5, may works without that update message.

But at that, you might want to block the Nintendo servers in your Router or via a Proxy, or with that DNS. You want to use the Search for that one.

****
Thanks for the info, but I had to update the system to 9.6 because it did not allow me to do anything with the browser!
Guess I'll have to wait till there's a downgrade option for this firmware version.

 

[jhiean]

Finally got into CFW after 30+ attempts, tried the browser thing - still no dice...

Anything else I should try, or should I go back and redo some steps?

check on the ip address on the pc... or try to another computer.. mine before i successfully installed devmenu on my ds i used second computer

 

[mechagouki]

check on the ip address on the pc... or try to another computer.. mine before i successfully installed devmenu on my ds i used second computer

Well, I just wasted another 2 hours on this. Tried 2 different wireless routers, 4 different PCs, it just won't connect. Probably time to give up and buy a Gateway. At least the downgrade worked fine.

 

[Sychophantom]

I keep getting an "Error! Invalid Nand size" message at the inject rednand into Emunand step.

Apparently, the 1.03 version of the tool doesn't work. the 1.01 version did.

 

[mechagouki]

I keep getting an "Error! Invalid Nand size" message at the inject rednand into Emunand step.

Apparently, the 1.03 version of the tool doesn't work. the 1.01 version did.

Yes, 1.03 EmuNAND Tool is broken, but I used 1.01.

I just re-did the whole process one more time - still getting "Failed to connect" when I run run.bat. I know it's not the 3DS, because I successfully created a 9.6 emuNAND last night using rxtools browser mode.

Going to take the 3DS and relevant files to work today, try it on the computers there.

 

[Sychophantom]

Trying to install BigBlueMenu. How do I know if I'm in the CFW? I'm guessing if I go through the steps and end back at the menu it worked.

Error code - c8a0802b is constant.

Also, where do you put the CIA for BigBlueMenu? It's not clear or I'm too scatterbrained right now, so I've got it in multiple places.

 

[mechagouki]

SSDD today at work, runs run.bat, window opens, brief pause, "failed to connect".

Just can't figure out why it's not working, I've followed the steps to the letter - could it be because I have WEP encryption on my network?

 

[jhiean]

SSDD today at work, runs run.bat, window opens, brief pause, "failed to connect".

Just can't figure out why it's not working, I've followed the steps to the letter - could it be because I have WEP encryption on my network?

on DS Profile Menu Hold L button until it reaches CFW. Then go to browser browse any website then run run.bat it should recieving the DevMenu or BBM.. Also check the IP

 

[Generaldane]

How do I know when the CW is loaded? my screen flashed white and it brought me back to the home screen so I am not sure if that means the CW firmware has loaded or not

 

[jhiean]

How do I know when the CW is loaded? my screen flashed white and it brought me back to the home screen so I am not sure if that means the CW firmware has loaded or not

yes if the screen flashes the goes back to home screen that means you're on CFW.. then browse to the internet then run run.bat to install DevMenu or BBM if you're using Palantine CFW

 

[jhiean]

SSDD today at work, runs run.bat, window opens, brief pause, "failed to connect".

Just can't figure out why it's not working, I've followed the steps to the letter - could it be because I have WEP encryption on my network?

try disabling the firewall let me know again if failed to connect again

@admins sorry for double posting

 

[Generaldane]

yes if the screen flashes the goes back to home screen that means you're on CFW.. then browse to the internet then run run.bat to install DevMenu or BBM if you're using Palantine CFW

Ok Thanks, but I am now encountering a different problem, whenever I go in profile and hold L while selecting Nintendo DS Profile, its no longer flashing, instead its opening and telling me to adjust the settings for my ds

 

[jhiean]

Ok Thanks, but I am now encountering a different problem, whenever I go in profile and hold L while selecting Nintendo DS Profile, its no longer flashing, instead its opening and telling me to adjust the settings for my ds

install the DS Profile Exploit again..

 

[Sychophantom]

Ok Thanks, but I am now encountering a different problem, whenever I go in profile and hold L while selecting Nintendo DS Profile, its no longer flashing, instead its opening and telling me to adjust the settings for my ds

Did you play or use a DS title? You'll have to reinstall the exploit.