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.​

 

[Deleted member 381889]

Any flashcart confirmed to work?

No, as stated in the OP.

 

[Deleted User]

Any flashcart confirmed to work?

not yet

 

[wolfmankurd]

Magnets man, they can do anything.

Even got Feynmanns knickers in a twist

 

[Tomy Sakazaki]

I mean, you could either buy a 3ds or fix the card slot. I remember somebody's I had to fix because the broke it with their semen some how

Is this guy name called Leonam?

 

[Byokugen]

freaking rip

That is why hardmod will.be the death of me :-)

 

[Deleted User]

Is this guy name called Leonam?

Diego.

 

[Dionicio3]

Diego.

Woah that's my brother's name

 

[Deleted User]

Woah that's my brother's name

Unless your last name is Saiz and you just moved to Texas

 

[Gamer4647]

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.
3. Even consoles with fried NAND, or even the NAND chip physically removed, can use this

Nice, no more hunting down for specific systems and serial codes, or being left out if you've already got one with a later firmware.
Of course, there is still the matter of being able to get hold of a flashcard that is specially prepared, but that's not as bad.

But what about if you use another DS system to trigger sleep mode?

 

[Dionicio3]

Unless your last name is Saiz and you just moved to Texas

Yeah, I know my brother can't do anything this big





Anyways, I know you did say any brick,but how would this fix an MCU brick?

 

[urherenow]

No, as stated in the OP.

factually incorrect. The OP shows it being done. Not showing WHICH DS flash cart is being used is beside the point (still says magnet and DS flash cart).

Anyways, I know you did say any brick,but how would this fix an MCU brick?

Don't quote me on this because I'm not sure what type of MCU the 3DS uses. Some can be flashed, so this method could technically have a way of fixing that too. If the brick is caused by some type of blown fuse, then of course it can't be fixed.

 

[Gamer4647]

factually incorrect. The OP shows it being done. Not showing WHICH DS flash cart is being used is beside the point (still says magnet and DS flash cart).

But the answer still stands as 'no' at this moment.
Later, but not now.

 

[Coto]

@Normmatt now that´s some cool wizardry (and I already re'd how you would achieve that.. i guess the yo dawg exception vectors joke comes to play),

 

[Snooli]

could we franken actual game card with wires and an arduino to get a kit? I wouldn't mind setting one up and then letting it travel across the world to people in need.

 

[Gamer4647]

Other DS systems can do the same effect.
For example, stacking a DS Lite on top of a DSi (upside down) triggers sleep mode, and stacking a 3DS on top of a DSi (upright) wakes it up from sleep mode.

Whether you can use one here though I have no idea.

 

[OctoNezd]

Other DS systems can do the same effect.
For example, stacking a DS Lite on top of a DSi (upside down) triggers sleep mode, and stacking a 3DS on top of a DSi (upright) wakes it up from sleep mode.

Whether you can use one here though I have no idea.

we need to go deeper

 

[Snooli]

Other DS systems can do the same effect.
For example, stacking a DS Lite on top of a DSi (upside down) triggers sleep mode, and stacking a 3DS on top of a DSi (upright) wakes it up from sleep mode.

Whether you can use one here though I have no idea.

magnets are magnets, sure you can. You would only have to get the speaker placement correct. I don't even think the hall detects polarity of the field.

--------------------- MERGED ---------------------------

we need to go deeper

When in doubt, add a Vita.

 

[Gamer4647]

magnets are magnets, sure you can. You would only have to get the speaker placement correct. I don't even think the hall detects polarity of the field.

--------------------- MERGED ---------------------------


When in doubt, add a Vita.

Just briefly got it in sleep mode with a regular 3DS and DS Lite.

Edit: Found a sweet spot. With a DS Lite, put it on top of a 3DS with the Lite upside down, and rest the edge of the top screen on the 3DS hinge.
Edit 2: New 3DS sweet spot is roughly the same with a DS Lite too. Only problem now is reaching the X button.
Edit 3: DSi and 3DS also trigger sleep mode on New 3DS in the same area.
Edit 4: DS Lite triggers sleep mode on New 3DS upraight too.

Who would actually try to do this anyway? It covers the buttons. :v

 

[Snooli]

If we get an Arduino version of this, the kit I'll release to travel around will have a neodymium magnet included. It is very small yet very strong.

 

[plushifoxed]

Here's hoping this will work with the DSTwo+. Either way, it's impressive, and comical to see how bad Nintendo goofed leaving this in the bootrom. Maybe it'll even still be in the New 2DS XL's bootrom, allowing for a bootrom dump on day 1, lol.