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.​

 

[Disco Inferno]

Remember there might be a price icrease after magnetHAX who'll be released.

Doubtful, since there's no limit on production, and it'll work on multiple cards, encouraging price competition. Worst case there will be supply hiccups.

 

[OblivionReign]

This is done with the acekard 2i right?

I sjre hope so lol that's the kne i own. *-*

 

[Giodude]

Cant wait to be disappointed it's not compatible with r4 sdhc dual core.

 

[Gamer4647]

I sjre hope so lol that's the kne i own. *-*

Pretty sure that's already been confirmed to be a work in progress earlier in the thread.

 

[Deleted User]

Cant wait to be disappointed it's not compatible with r4 sdhc dual core.

You have two choices:

1. Be mad/disappointed that it's not compatible with your specific flashcard
2. Be excited that there is a way to unbrick any brick (except MCU) and install CFW on any FW

Pretty sure that's already been confirmed to be a work in progress earlier in the thread.

It was.

 

[Giodude]

You have two choices:

1. Be mad/disappointed that it's not compatible with your specific flashcard
2. Be excited that there is a way to unbrick any brick (except MCU) and install CFW on any FW

It was.

Apparently it can unbrick the mcu.

 

[Deleted User]

Apparently it can unbrick the mcu.

Who told you this?

We literally had like 3 pages of discussion apologizing to each other about how we said the MCU could be fixed and that we were wrong. MCU (Microprocessor unit) is a hardware brick completely unrelated to NAND.

 

[proflayton123]

Apparently it can unbrick the mcu.

Like blujay said, MCU bricks are hardware related, the nand essentially being software related? Although as rare as they come.

 

[migles]

funny to see a PSP-alike method was discovered on the 3ds...
i remember with a flashed battery you could also unbrick any psp (fat model)

 

[Deleted User]

Like blujay said, MCU bricks are hardware related, the nand essentially being software related? Although as rare as they come.

NAND is firmware. But essential yes

 

[Giodude]

Who told you this?

We literally had like 3 pages of discussion apologizing to each other about how we said the MCU could be fixed and that we were wrong. MCU (Microprocessor unit) is a hardware brick completely unrelated to NAND.

I can't keep up with a thread that changes every few minutes. I figured mcu bricks were unfixable, but people kept insisting otherwise. I know the mcu is hardware related, which is why that surprised me.

 

[Deleted User]

I can't keep up with a thread that changes every few minutes. I figured mcu bricks were unfixable, but people kept insisting otherwise. I know the mcu is hardware related, which is why that surprised me.

Sorry I got mad. But yeah, someone spread rumors it was fixable if you had B9S installed. I thought that MCU bricks were fixable because if you can turn the 3ds on you should be able to boot to the cartridge but what do I know

 

[Deleted User]

Do you think it can work on a DS iPlayer http://www.dsiplayer.com/
it can have firmware update :/ (it has GBA loader like DSTwo)

 

[hurrz]

Sorry I got mad. But yeah, someone spread rumors it was fixable if you had B9S installed. I thought that MCU bricks were fixable because if you can turn the 3ds on you should be able to boot to the cartridge but what do I know

Now apologise again please! /s

/s off:
Also, I think it might be a good idea for the devs of NTRboothax or whatever it will be called to make some kind of own flashcard to get profit of their wonderful exploit / work even if it is unlikely to make an own one. But this would be a appropriate credit to what they will have done for the community!

 

[Snooli]

+1
They surely deserve it, especially SciresM. Besides, it could be another SDtwo GBAtemp edition.

 

[Deleted User]

Now apologise again please! /s

/s off:
Also, I think it might be a good idea for the devs of NTRboothax or whatever it will be called to make some kind of own flashcard to get profit of their wonderful exploit / work even if it is unlikely to make an own one. But this would be a appropriate credit to what they will have done for the community!

Personally, I don't think they will. They certainly can, but they work for the community, and community ethics say that is wrong. That it should all be free. I think they should, but they probably won't. Otherwise people would treat them like Gateway

 

[pandavova]

treat them like Gateway

I dont think so, cause Gateway "steals" the things that are included, right?
And when the creators of this payload/exploit are selling "ntrcards", they could sell this like a "donation", but i dont really know if this would be even worth the work...

 

[Billy Acuña]

Personally, I don't think they will. They certainly can, but they work for the community, and community ethics say that is wrong. That it should all be free. I think they should, but they probably won't. Otherwise people would treat them like Gateway

Don't worry, probably Gateway will release they own modified Blue Card with ntrboothax and give it a shitty name as they did with "their own" A9LH's implementation (Gateway's Fastboot).

 

[gamesquest1]

Personally, I don't think they will. They certainly can, but they work for the community, and community ethics say that is wrong. That it should all be free. I think they should, but they probably won't. Otherwise people would treat them like Gateway

They don't work for anyone, they choose to contribute to the community, I personally wouldn't mind them selling their own card ethically it's their work going Into it, why should some shady flashcard teams and devs bump up prices and be making double or triple the profit on compatible cards thanks to their work, we have already seen resellers bumping up prices on the likes of the acekard

The only people who would treat them like gateway are crybabies who think everyone else is a slave for them to enjoy fr33 r0mz!

 

[Deleted User]

They don't work for anyone, they choose to contribute to the community, I personally wouldn't mind them selling their own card ethically it's their work going I to it, why should some shady flashcard teams and devs bump up prices and be making double or triple the profit on compatible cards that's to their work, we have already seen resellers bumping up prices on the likes of the acekard

The only people who would treat them like gateway are crybabies who think everyone else is a slave for them to enjoy free r0mz!

*sigh* I knew when I made that post my thoughts weren't expressed clearly.

Let me try and rewrite it:

They choose to work for the community. With that, they (usually) end up adopting the community mindset and ethics because they aren't being payed to do so. This is still their own choice. They aren't being forced to do it, they do it because they want to.

Community ethics (which they sometimes choose to adopt) involve free releases, and homebrew that isn't sold. Many people, even those who don't support homebrew/CFW, also believe that selling any kind of code that is designed to abuse a system feature/flaw isn't right.

Then comes the struggle of making a flashcard. I'd say at least 25% of people in this thread have some sort of NTR Flashcard. If instead of designing their own card (which takes a lot of work on the hardware side as well has including a way to flash the chip) they could get it working with other flashcards, more people could enjoy it for free.

If they made their own flashcard, it could be against the law in their country (which I am not sure of) and it costs money to ship, manufacture, and other things.

All in all, it is a lot more work to design a flashcard than some portray it. Plus, with work for the community in mind, community ethics may end up having a role in the decision. I.e: Those people who sold their exploit to Nintendo on the HackerOne program. Lot's of people were mad because it went against the community.

It is up to them. I wouldn't mind buying another flashcard for this purpose. But some may.

Please don't take my original post as an attack against them me trying to be entitled, because I wasn't doing either.

TL;DR: If you want an answer that doesn't seem like entitlement, you will have to read all of it. Thanks