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]

And the epic wait begins! Or has already begun a while back! Kinda like Hedgeberg and waiting for him to dump the arm9 bootrom. The answer is simple, time. Just wait it out and it will be released/more flashcards compatible. Bugging SciresM or Normatt will probably make them work slower purposely as a response. And we don't want that, right?

Well, there has been no updates since the PoC was uploaded, save for that the n2ds works

 

[pixelmasher]

Well, there has been no updates since the PoC was uploaded, save for that the n2ds works

That's just hearsay unless they provided video of it in action. We know it works, but NOTHING is confirmed other than that you need a magnet or a sleep switch and a hacked flashcard.

 

[failzers]

That's just hearsay unless they provided video of it in action. We know it works, but NOTHING is confirmed other than that you need a magnet or a sleep switch and a hacked flashcard.

**cough** https://twitter.com/SciresM/status/875198410575532032 **cough**
how that was a hard one

 

[pixelmasher]

**cough** https://twitter.com/SciresM/status/875198410575532032 **cough**
how that was a hard one

That we know. https://gbatemp.net/threads/i-got-an-n2dsxl.474326/

 

[failzers]

That we know. https://gbatemp.net/threads/i-got-an-n2dsxl.474326/

you just said it wasn't confirmed

 

[pixelmasher]

you just said it wasn't confirmed

Not confirmed by Normmatt. That wasn't Normmatt. That was Michael.

 

[failzers]

Not confirmed by Normmatt. That wasn't Normmatt. That was Michael.

Yeah, not like he was the guy who made the PoC video or anything.

 

[ken28]

anyone knows if a special magnet will be needed or if any cheap one will be enough?

 

[fig8]

anyone knows if a special magnet will be needed or if any cheap one will be enough?

Any magnet will do fine.

Sent from my SM-G360H using Tapatalk

 

[Shigure20]

I hope that's true.

 

[zoogie]

anyone knows if a special magnet will be needed or if any cheap one will be enough?

It's possible for a magnet to be not strong enough, but such magnets are pretty rare. Some soft, bendable vinyl magnets might fall into this category.
Your average fridge magnet should work.

source, me

 

[nl255]

It's possible for a magnet to be not strong enough, but such magnets are pretty rare. Some soft, bendable vinyl magnets might fall into this category.
Your average frige magnet should work.

source, me

Well, I can definitely say that a magnetic implant (in the palm of my hand, done by Sampaa) is strong enough to trigger sleep mode if you get the right spot but there is no way it would be possible to hold down the buttons and trigger sleep mode that way. But I agree, pretty much any magnet should work.

 

[pixelmasher]

It's possible for a magnet to be not strong enough, but such magnets are pretty rare. Some soft, bendable vinyl magnets might fall into this category.
Your average frige magnet should work.

source, me

I had one of those bendy magnet not work while another bendy magnet worked fine. Also had a small fridge magnet not work while others all worked. It's easy enough thing to just try yourself.

 

[Myria]

It's possible for a magnet to be not strong enough, but such magnets are pretty rare. Some soft, bendable vinyl magnets might fall into this category.
Your average fridge magnet should work.

source, me

You can get prepared now. Turn your 3DS on to the Home Menu, then place the magnet on top of the B button. If the magnet is in the correct position and is strong enough, the system will think that you closed it, and go into sleep mode. That's all you need for ntrboothax.

On an Old 2DS, you don't need a magnet at all. The sleep switch at the bottom of the system is what you need, rather than a magnet.

 

[pixelmasher]

You can get prepared now. Turn your 3DS on to the Home Menu, then place the magnet on top of the B button. If the magnet is in the correct position and is strong enough, the system will think that you closed it, and go into sleep mode. That's all you need for ntrboothax.

On an Old 2DS, you don't need a magnet at all. The sleep switch at the bottom of the system is what you need, rather than a magnet.

So soon™?

 

[Akira]

Already tried a couple of fridge magnets and some of those that are not strong enough doesnt trigger the sleep mode. Those "some" are the thin ones.

 

[ken28]

got some cheap magnet for outdoor use on a desk and they are strong enough to trigger sleepmode

 

[GibWaffles]

Where is the magnet spot on the O3DS? My console has been NAND bricked for years and I want to boot a nds game on it before the software is released. Just seeing it work after nearly four years would be awesome.

 

[zoogie]

Where is the magnet spot on the O3DS? My console has been NAND bricked for years and I want to boot a nds game on it before the software is released. Just seeing it work after nearly four years would be awesome.

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

 

[ken28]

Where is the magnet spot on the O3DS? My console has been NAND bricked for years and I want to boot a nds game on it before the software is released. Just seeing it work after nearly four years would be awesome.

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

Spoiler

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