Tutorial Installing Dev Firmware and Dev Apps on Retail 3DS

[Konno Ryo]

Disclaimer; I'm not responsible if any thing goes wrong, and your 3DS bricks.

This is a simple tutorial I am making if any one needs it, this is more for developers than the average users as it is a Dev FW. I only tested this on my 2DS so far so if you have success please say so in the comments. The firmware CIAs are USA region, so if your 3DS is not USA, use Plailect's guide to region change to USA.

Update; There seems a problem installing Dev FW on N3DS, I do not know a way around this, sorry. If anyone can get this to work on a N3DS leave a comment explaining how you got it to work, please.

First you need some files.
sysupdater (Alt. Link)
Dev & Factory Titles (No link look on "that 3DS ISO Site")
Retail Encrypted DevApps (No link look on "that 3DS ISO Site")
Luma3DS (Nightlies)

1. Setup Luma3DS (click it is a link).
2. Extract 11.4.rar and rename the folder to "updates", delete 000400000FF40102.cia and 000400000FF40002.cia.
3. Extract DevMegaPack.rar and rename Config_v11_4_NAND.cia and DevMenu_Nand.cia to 000400000FF40102.cia and 000400000FF40002.cia then copy them to the "updates" folder.
4. Move the "updates" folder and the sysupdater.cia to the root of your SD card.
5. Boot Luma3DS, hold select, enable Developer features, load EmuNand.
6. Use FBI or something to install sysupdater.cia.
7. Close FBI and open sysupdater. We're downgrading, so you need to press the Y button.
8. Wait and DO NOT touch anything. The app will tell you when it is done (It takes less than 5 minutes). Once the app says it is done, wait, it will reboot automatically.
9. Done, now have fun!

To get Test Menu

1. Once your at the home menu open "CONFIG", select "Menu Setting", select "Menu", press up to "test menu".
   
2. Press B x2, press "Power" to reboot.

To get out of Test Menu

1. Press Start to open DevMenu scroll to CTR-P-CFGO and press A to open "CONFIG"
2. Select "Menu Setting", select "Menu", press down to "home menu"
3. Press B x2, press "Power" to reboot.

Extra Info

1. While on the Dev FW you the ability to press X + Y on the home menu to display debug banner info.
2. Also press X + B to change the banner region, so you can view the other versions of banners.
3. Your 3DS's firmware version in System Settings displays 0.0.0-0U.
4. Open "CONFIG", select "Debug Setting", select "Debug", press up to "enable" to get more options in the Test Menu.

Source

Disclaimer; Again I'm not responsible if any thing goes wrong, and your 3DS bricks.

 

[nero99]

Can I suggest having users use this with emunand on a different sd card so they don't brick and lose all their stuff?

 

[Sonansune]

what's the point?

 

[Naendow]

Yes. Is it good for anything?

 

[DeathChaos]

what's the point?

Yes. Is it good for anything?

If you're asking this question then you probably won't ever need this.

Disclaimer; I'm not responsible if any thing goes wrong, and your 3DS bricks.

This is more for developers then the average users as it is a Dev FW.

 

[Sonansune]

If you're asking this question then you probably won't ever need this.

i thought people prefer to use devunit than this customized fw version?

 

[runetoonxx2]

On new3ds xl I got an unhandeled arm9 error for some reason so I'm restoring my emunand and trying again

 

[Konno Ryo]

On new3ds xl I got an unhandeled arm9 error for some reason so I'm restoring my emunand and trying again

Did you remember to set Luma3DS to dev mode?

 

[runetoonxx2]

Did you remember to set Luma3DS to dev mode?

yes

 

[runetoonxx2]

yes

Second try didn't work either

 

[seijinshu]

Ima going to try this out! I just made an SD backup and my sysnand is getting backed up (Since my HDD that had all of my files related to 3DS hacking since I joined the former 9.2 master race died , which included my only non-A9LH nand backup)

 

[Homebrewa]

What is the difference between this and just installing the retail-encrypted dev apps.. Does this change the keys so you don't have to re encrypt dev cias?

 

[seijinshu]

What is the difference between this and just installing the retail-encrypted dev apps.. Does this change the keys so you don't have to re encrypt dev cias?

This is the whole dev firmware.

 

[Ryccardo]

What is the difference between this and just installing the retail-encrypted dev apps.. Does this change the keys so you don't have to re encrypt dev cias?

No, we'll need a cfw with on the fly key replacement... also known as emubootrom, lol

 

[Rasa]

this is more for developers then the average users as it is a Dev FW.

*than or I'm mistaken?

 

[seijinshu]

I get error c8804478 when trying to load dev menu

 

[Homebrewa]

Oh, I understand why a dev firmware would be desirable, but a hypothetical "emubootrom" (hah) mod is also important - removes the (little?) need for panda units to begin with!!

 

[memomo]

I don't know whats wrong.. sysNAND still works but emuNAND after downgrading to Dev FW show this


N3ds/Luma3DS/sysNAND FW11/EUR console/region changed emuNAND to US/

anyway this was in a secondary SD card, I'll keep it for some time if there is a solution

 

[seijinshu]

Oh, I understand why a dev firmware would be desirable, but a hypothetical "emubootrom" (hah) mod is also important - removes the (little?) need for panda units to begin with!!

I think it is silly for people with pandas in the scene to not try to crack 'em open. Might lead to Custom Bootroms with all the keys.

Sent from my LG-H811 using Tapatalk

 

[olec04]

I think it is silly for people with pandas in the scene to not try to crack 'em open. Might lead to Custom Bootroms with all the keys.

Sent from my LG-H811 using Tapatalk

probably cause they are soo expensive