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.​

 

[kublai]

acekard anyone?

What about them?

Normatt was known to write CFW for the Acekard back then?

 

[Snooli]

Normatt is on IRC, let's ask him

 

[Deleted User]

Normatt is on IRC, let's ask him

can I have a link to the IRC? I've never been able to find it

 

[gamesquest1]

---------------

We would replace the main files of the flashcart with Godmode9. I just looked into the Gateway Blue Card's files, and there's actually a Deep Labrynth ROM (64MB), as well as a trimmed .trim.nds ROM along with it (60.2MB iirc).

I copied the two nds files from my card to my PC, but I wonder if we can write to the flashcart. I'll putting a different ROM on the cart when I get home.

Also, loading the non trimmed ROM in DeSmuMe does nothing, but loading the .trim.nds file shows me the R4 "Loading...." screen. Weird.

That rom is just what the flash card "identifies" itself to the 3ds as aka the header we are all talking about, so the rom godmode shows is just a virtual representation of a dummy rom that only really consists of the rom header and the basic loader that loads up the files from the sd card

 

[Snooli]

can I have a link to the IRC? I've never been able to find it

Just click on the chatroom in the top-right bar

 

[Tomy Sakazaki]

Diego.

tl;dr about why I asked if he's named Leonam, in Brazil we have a kind of internet legend who goes by Leonam who alleged to have cummed in a Dreamcast lenses.
sauce for portuguese readers: http://aurelio.net/misc/besteiras/gozeinomeudreamcast.txt

 

[Gamer4647]

who alleged to have cummed in a Dreamcast lenses.

That's... just weird. Surely that's a typo.

 

[Patxinco]

That's... just weird. Surely that's a typo.

Yeah... No
Not a typo sadly, i can understand enough portugese to tell that...

 

[Snooli]

That's... just weird. Surely that's a typo.

If you knew how Diego got into here, you would understand

 

[Gamer4647]

Yeah... No
Not a typo sadly, i can understand enough portugese to tell that...

Cummed? In Dreamcast lenses? WTF?

From a left in 3DS exploit, to bizarre Playstation hacks, to this.

 

[Deleted User]

i just tested the magnet sleepmode on both my old and my newxl 3ds and both went to sleepmode but when i tried rebooting with the magnet the old 3ds did not boot unless i removed the magnet and tried again (old non xl is on b button and new xl is next to start/select)

 

[Snooli]

Cummed? In Dreamcast lenses? WTF?

From a left in 3DS exploit, to bizarre Playstation hacks, to this.

From 3DS exploit built around a game cartrige to broken cartrige slots to how they were broken... I think you can pick it up from here

 

[Gamer4647]

i just tested the magnet sleepmode on both my old and my newxl 3ds and both went to sleepmode but when i tried rebooting with the magnet the old 3ds did not boot unless i removed the magnet and tried again (old non xl is on b button and new xl is next to start/select)

The magnet and button combination won't boot to anything yet. You need a specially prepared DS flashcard.

 

[dpad_5678]

i just tested the magnet sleepmode on both my old and my newxl 3ds and both went to sleepmode but when i tried rebooting with the magnet the old 3ds did not boot unless i removed the magnet and tried again (old non xl is on b button and new xl is next to start/select)

Hold down the power button instead of pressing it. That worked for me.

The magnet and button combination won't boot to anything yet. You need a specially prepared DS flashcard.

But he was saying the system would not turn on at ALL (no power indicator).

 

[Gamer4647]

Hold down the power button instead of pressing it. That worked for me.


But he was saying the system would not turn on at ALL (no power indicator).

Oh. My bad.

 

[dpad_5678]

Oh. My bad.

I thought the same thing at first as well . I just thought it was strange, wondering how the system would check to see if the correct NDS card was inserted if it never actually powered on in the first place.

 

[Deleted User]

I thought the same thing at first as well . I just thought it was strange, wondering how the system would check to see if the correct NDS card was inserted if it never actually powered on in the first place.

See? the old 3ds cant boot with the magnet

 

[Deleted User]

See? the old 3ds cant boot with the magnet

From what I understand, this is true.

You have to hold Start+Select+X+Magnet+Power for it to turn on. It takes a second for the light to come on.
it is probably checking if you have a cart/whether it is a regular NTR cart or now

 

[Wuigi]

@Eix I just tested it on my OG3DS and I had to put the magnet on the right spot and then it stopped responding to holding the power button except with X+Start+Select.
Putting it between the X and B button made it work.

 

[Deleted User]

@Eix I just tested it on my OG3DS and I had to put the magnet on the right spot and then it stopped responding to holding the power button except with X+Start+Select.
Putting it between the X and B button made it work.

putting the magnet between x and b does not enter sleepmode