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.​

 

[GibWaffles]

Put your finger behind the right speaker. Now close the lid and your finger should point right at the magnet sensor.

Around that area (just a bit under the B button to be precise

Spoiler

Gesendet von meinem SM-G925F mit Tapatalk

I placed the magnet there and pressed start, select, x, but nothing different happened. I still just got a black screen. There was no error nor did the game boot.

 

[Snooli]

Come on guys. It has been stated previously that it checks for one specific NTR card, no random game will work.

 

[GibWaffles]

Come on guys. It has been stated previously that it checks for one specific NTR card, no random game will work.

I expected it to at least return an error or something.

 

[Snooli]

I expected it to at least return an error or something.

It's actually too low level to do that

 

[ken28]

Do we know how it was actually discovered?

Gesendet von meinem SM-G925F mit Tapatalk

 

[Snooli]

Do we know how it was actually discovered?

Gesendet von meinem SM-G925F mit Tapatalk

https://sciresm.github.io/33-and-a-half-c3/

 

[ken28]

It's actually too low level to do that

So it basicly like expecting from a bios / uefi that it will boot up a game?

Gesendet von meinem SM-G925F mit Tapatalk

 

[Mazamin]

Kinda reminds me of the gateway hype trains lol

 

[pixelmasher]

Kinda reminds me of the gateway hype trains lol

SOON™

 

[Byokugen]

53 pages for nothing? really guys

53 pages of pure gold! It's still under testing for other ds cart support :-)

 

[pixelmasher]

53 pages for nothing? really guys

55 now.

 

[Ironknight]

53 pages of pure gold! It's still under testing for other ds cart support :-)

I just wish at least the acekard 2i only version was released tbh

 

[pixelmasher]

I just wish at least the acekard 2i only version was released tbh

I think they said they don't want to drive up the card price the way NinjaHax drove up Cubic Ninja price.

I guess they aren't having much luck with any other cards. That's my takeaway from the deafening silence.

Maybe Gatewait is pumping out Acekard 2i clones. Someone mentioned they're making bunch of cards in a Gatewait thread waiting for 11.3/11.4 support.

 

[Snooli]

I think they said they don't want to drive up the card price the way NinjaHax drove up Cubic Ninja price.

I guess they aren't having much luck with any other cards. That's my takeaway from the deafening silence.

Maybe Gatewait is pumping out Acekard 2i clones. Someone mentioned they're making bunch of cards in a Gatewait thread waiting for 11.3/11.4 support.

Yeah, it's not as if the AK2i on the market were originals, the team went dead long ago. It's a bit of a shame we didn't work out an open card for all chinese to freely manufacture, while keeping compatibility with one software.

 

[Ironknight]

I think they said they don't want to drive up the card price the way NinjaHax drove up Cubic Ninja price.

I guess they aren't having much luck with any other cards. That's my takeaway from the deafening silence.

Maybe Gatewait is pumping out Acekard 2i clones. Someone mentioned they're making bunch of cards in a Gatewait thread waiting for 11.3/11.4 support.

Well, duh, still kinda disappointing

 

[Starzcream]

Well, duh, still kinda disappointing

Dstwo is pretty hackable...

 

[pixelmasher]

Dstwo is pretty hackable...

We suspect Acekard 2i and to a lesser extent SuperCard DSTwo, but they keep telling us nothing's confirmed. DSTwo's more expensive so I guess they don't want it driven up to Gatewait prices if it is one of the cards that can be used.

 

[Silicon42]

EZ-Flash Vi might also be a possibility since they can be re-flashed. I know this because I had to do it once after I somehow managed to brick it.

 

[TheCyberQuake]

We suspect Acekard 2i and to a lesser extent SuperCard DSTwo, but they keep telling us nothing's confirmed. DSTwo's more expensive so I guess they don't want it driven up to Gatewait prices if it is one of the cards that can be used.

Isn't Normatt, one of the ones working on this, also one of the ones who worked on acekard when that was around? If that's true it in addition to acekard being flashable heavily hints towards an acekard2i version. But again nothing is truly confirmed until release.

 

[pixelmasher]

Isn't Normatt, one of the ones working on this, also one of the ones who worked on acekard when that was around? If that's true it in addition to acekard being flashable heavily hints towards an acekard2i version. But again nothing is truly confirmed until release.

Yes, he also worked on AKIAO, that why we think Acekard 2i is almost guaranteed. The flashability is why we suspect DSTwo. Also someone mentioned it's well understood.