It's here!

​

Info

@Normmatt has created a way to run B9S .firm files from bootrom via a DSi Flashcard and a magnet! This works on every 3DS on any firmware version.

For installation without a PC, user @TheCyberQuake has created a pack which will automatically install B9S and copy over essential starter homebrew from the flashcard's SD to the 3DS's. This will mainly be used for PC-less B9S installations. If you have a PC with you, use 3ds.guide. Read more here: https://gbatemp.net/threads/481141/

How does this work?

This works because of a flaw in the bootrom. Before the bootrom boots the NAND, it checks to see if Start+Select+X is held down, and if the shell is closed. If these requirements are met, it will boot an NDS cartridge from the bootrom. This give that cartridge bootrom access. You might be wondering how you'd hold down buttons while the shell is closed, and why you need a magnet. If you put a magnet in a specific spot on the 3DS, it will go into sleep mode. Using this, you can boot the NDS cartridge with the buttons held down while in sleep mode! Using a reflashable flashcard, you can boot B9SInstaller using the flashcard, and easily install it on your 3DS.

The 2DS doesn't need a magnet since a switch puts it to sleep instead of a magnet.

What does this mean?

1. Any 3DS model on any firmware can be hacked with minimal effort
2. You can unbrick any 3DS model from any type of brick.
   - Remember, you don't need a NAND backup for this. Just do a CTRTransfer.
   - This does not apply to MCU bricks.
3. Even consoles with fried NAND, or even the NAND chip physically removed, can use this

This is incredibly impressive stuff, and will most likely be released soon! edit: now!

FAQ

Q: Can Nintendo patch this?
A: Nope! Not without a new hardware revision.

Q: My flashcard is blocked by my firmware! Can I still use this?
A: Yes! The flashcard blacklist is not enabled on the bootrom.

Q: Why can't this work with my flashcard?
A: The installation requires you to flash NTRBoot to the flashcard's nand. Most DS flashcards, such as the original R4, have a ROM, which is not flashable.

Q: Can I install NTRBoot on my flashcard without another 3DS system?
A: If you can run NDS roms on your 3DS with it, then yes. If it's blocked on your 3DS version, then you'll need another 3DS system to use it.

Q: Will my 3DS flashcard work?
A: No, only the NDSi flashcards listed above.

Q: Will any other flash cards work?
A: Only the ones listed in the OP. However keep in mind that flashcards such as the DSTT, Supercard DS2 and R4 SDHC Dualcore are planned to be supported in the future.

Q: I tried to do this with my cartridge and it didn't work?
A: It doesn't work with regular DS cards.

Q: Can I unbrick from a ____ brick?
A: Considering the card has access to the bootrom, yes! This can unbrick any brick (except MCU), unless you've taken a knife to the motherboard.

Q: Can I install B9S on the latest firmware with this?
A: Again, since the card has access to the bootrom, you can do this easily! Just plug in your flashcard, boot up using the magnet and button combination, and install.

Q: Does this work on the New Nintendo 2DS XL?
A: Yes!

Release
Guide
Free NTRBoot Flashing
Free B9S Installations

Here is SciresM's post about this

Please see SciresM's presentation on bootromhax.​

 

[failzers]

It's different between old and new. In new you can press the button with the lid closed, so it will turn on and just go straight to sleep mode. But in old 3DS and 3DS XL you can't press the power button with the lid closed.

so i would have to press power, put the magnet quickly in the right place, then hold the buttons within a second?

 

[TheCheeze]

Put everything in place, hold down buttons, THEN press power

 

[failzers]

Put everything in place, hold down buttons, THEN press power

From what he is saying that wouldn't work. He said you can't press power button with the magnet on, so one of you is wrong? I dunno. I have an o3dsxl,

 

[TheCheeze]

I use an O3ds and have tested what I posted. All he was saying is that in O3DS it is not really feasible to press the power button while the lid is closed, that's why we use the magnet (to trick the system into thinking it is closed)

 

[annson24]

From what he is saying that wouldn't work. He said you can't press power button with the magnet on, so one of you is wrong? I dunno. I have an o3dsxl,

A slight misunderstanding. The 3ds (old models) won't turn on unless the combinations are held down first.

Sent from my SM-G950F using Tapatalk

 

[failzers]

I use an O3ds and have tested what I posted. All he was saying is that in O3DS it is not really feasible to press the power button while the lid is closed, that's why we use the magnet (to trick the system into thinking it is closed)

A slight misunderstanding. The 3ds (old models) won't turn on unless the combinations are held down first.

Sent from my SM-G950F using Tapatalk

Oh. i thought you mean't the lid was closed as in the magnet tricking it. Never mind.

 

[TheCyberQuake]

Seemshow a lot of people (including myself) are using versions of ntrboot that load ntrboot.firm instead of boot.firm, I thought I would upload a nds/dsi flasher version of that. I've only seen the .firm used for ntrboot_flasher, and a nds/dsi flasher also exists. Didn't see it posted before so hopefully I'm not just reposting it (though I did compile myself)
NOTE: THIS VERSION IS CURRENTLY UNTESTED. PROCEED WITH CAUTION.

 

[pikpol]

Attempting to dump it won't brick it, it'll let you know if its compatible or not.

Just run the flasher up until the point where it verifies whether your card works or not.

Although you normally flash the EZ firmware to the card. NTRboot can't be flashed to the EZ Flash Vi.
I still think it can be made compatible in the future.

 

[RedBlueGreen]

Seemshow a lot of people (including myself) are using versions of ntrboot that load ntrboot.firm instead of boot.firm, I thought I would upload a nds/dsi flasher version of that. I've only seen the .firm used for ntrboot_flasher, and a nds/dsi flasher also exists. Didn't see it posted before so hopefully I'm not just reposting it (though I did compile myself)
NOTE: THIS VERSION IS CURRENTLY UNTESTED. PROCEED WITH CAUTION.

What exactly would using this change? Wouldn't it just be the same thing?

 

[nl255]

What exactly would using this change? Wouldn't it just be the same thing?

Normally ntrboot will run boot.firm just like regular b9s does. This version runs ntrboot.firm instead.

 

[Redferne]

What exactly would using this change? Wouldn't it just be the same thing?

The NDS flasher can only flash for boot.firm, this one flash for ntrboot.firm.

 

[DocKlokMan]

Thanks for the info, but honestly speaking, I never had one of those problems metioned above after unbricking several units already. What I did was, instead of booting directly to gm9 with ntrboot, I install b9s first with ntrboot then proceed on chainloading gm9 with luma3ds. I don't know if it has anything to do with the issue, but I had a 100% success rate with it.

Sent from my SM-G950F using Tapatalk

It does, it seems the newer version of GodMode9, > 1.2.8, are having issues with screen init. When you install B9S and chain load into it, the screen is already initiated and so this issue does not happen. On top of that, it's only happening on select systems. I have no issues on n2DS XL or n3DS, but on o3DS XL the bottom screen has scan lines (very faint, but there) and on 2DS systems it doesn't seem to appear at all. Testing is still underway.

 

[chile_unlock]

Instrucciones correctas para 2ds

1. primero inserte las tarjetas tanto
2.para salir en modo de reposo
3. Ejecución de secuencia de botones
4. al encender el botón de suspensión
5. Cuente tres segundos y suelte los otros botones.

Gracias por tu tiempo,
Y mi pésimo inglés

Https://ibb.co/mXJsRk
Https://ibb.co/iOZoz5

 

[EmuAGR]

NTRboot on DSTT:

 

[annson24]

This is the DsTT correct? There is no other variant of this?

Sent from my SM-G950F using Tapatalk

 

[yacepi15]

Time to buy a DSTT?

 

[MrJason005]

Instrucciones correctas para 2ds

1. primero inserte las tarjetas tanto
2.para salir en modo de reposo
3. Ejecución de secuencia de botones
4. al encender el botón de suspensión
5. Cuente tres segundos y suelte los otros botones.

Gracias por tu tiempo,
Y mi pésimo inglés

Https://ibb.co/mXJsRk
Https://ibb.co/iOZoz5

Please speak english.

 

[AtlasFontaine]

NTRboot on DSTT:

I wonder if the DSTTi would work too

 

[yacepi15]

Please speak english.

He's just explaining how to trigger NTRBoot on a 2DS.

 

[RedBlueGreen]

NTRboot on DSTT:

If you made this: How was this done? Isn't R4 SDHC a clone of DSTT? Sharing this with the development team could help them.