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 User]

Good morning blujay. List through last few pages. We started posting stuff from yesterday's IRC session

How do you know I just woke up? I could've been having a part. /s

Yeah I read them. I also read that SciresM got mad that people are buying flashcards already. Personally, I would just like to get one early for $35 because even if they announce it for a $10 card, everyone will drive that price up.

 

[Gamer4647]

gg

Me not reading properly.

 

[ItsMetaKnight]

Can't get it to boot.
If I hold Start+Select+X with a magnet, I can't power it on.

 

[Deleted member 381889]

Can't get it to boot.
If I hold Start+Select+X with a magnet, I can't power it on.

then you're doing something wrong

 

[Kubas_inko]

Stupid question, but are you going to support R4i clones?

 

[Snooli]

How do you know I just woke up? I could've been having a part. /s

Yeah I read them. I also read that SciresM got mad that people are buying flashcards already. Personally, I would just like to get one early for $35 because even if they announce it for a $10 card, everyone will drive that price up.

We should build a custom card specialy for this and release it openly after first batch. That would should make it cheap enough.

It's not even 6AM in Arizona. Were you up all night?

 

[Gamer4647]

If you have an o3ds, the 3DS cannot boot in sleep mode or with a magnet on it.
If you hold Start+Select+X with a magnet, it will boot.
If you hold Start+Select+X with a magnet and custom DS Card, it will boot the DS Card.

With a N3DS, it can boot in sleep mode.

Can't get it to boot.
If I hold Start+Select+X with a magnet, I can't power it on.

Is it an original 3DS?

 

[ivoyko]

My flashcart have years. Lucky was a A2ki bc was cheap when i bought it i has a no working CycloDS.

 

[ItsMetaKnight]

Is it an original 3DS?

Old 3DS XL

 

[Deleted member 381889]

Is it an original 3DS?

With magnet + key combo, it should work on any 3DS.

 

[Gamer4647]

If you have an o3ds, the 3DS cannot boot in sleep mode or with a magnet on it.
If you hold Start+Select+X with a magnet, it will boot.
If you hold Start+Select+X with a magnet and custom DS Card, it will boot the DS Card.

With a N3DS, it can boot in sleep mode.

With magnet + key combo, it should work on any 3DS.

:v

 

[ItsMetaKnight]

- deleted -

 

[ItsMetaKnight]

Hey, I got it to work now. You have to make sure of the following:
1. Must press POWER longer than usual (about 1-2 seconds)
2. Don't accidently push any other buttons with your magnet

 

[ivoyko]

When i try on my OLD3DS appear Luma screen... maybe my fingers are stupid.

 

[Deleted User]

We should build a custom card specialy for this and release it openly after first batch. That would should make it cheap enough.

It's not even 6AM in Arizona. Were you up all night?

I was joking, lol.

Anyways, making our own flashcard is a bad idea. That would make us responsible for designing/reproducing the board, and then using NDS card shells. And unless we were the only ones to sell it (via Temp) the price would go up anyways

 

[PrincessLillie]

Hardmodders... Outdone by a MAGNET... Good job team!

 

[Snooli]

Anyways, making our own flashcard is a bad idea. That would make us responsible for designing/reproducing the board, and then using NDS card shells. And unless we were the only ones to sell it (via Temp) the price would go up anyways

That's why we wouldn't be responsible for manufacturing and distribution, only design and software.

 

[Deleted User]

That's why we wouldn't be responsible for manufacturing and distribution, only design and software.

He would distribute? Any regular company (like nds-card.com) would raise the price with demand. I'd say let the devs who made the original carts get one last kick out of their design

 

[RedBlueGreen]

Hardmodders... Outdone by a MAGNET... Good job team!

Well it's not like the whole magnet trick is some developed exploit. It's something that's already in the bootrom probably for console repair.

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

then you're doing something wrong

Should it be booting with start+select+x yet? We don't have the key for the repairs yet right?

 

[Deleted member 381889]

Should it be booting with start+select+x yet? We don't have the key for the repairs yet right?

O3DS/2DS normally can't boot when shell is closed (or slider/magnet are set). Start+Select+X+hold power bypasses.

 

[RedBlueGreen]

O3DS/2DS normally can't boot when shell is closed (or slider/magnet are set). Start+Select+X+hold power bypasses.

Ah okay. Do you still need the magnet and Start+Select+X on N3DS then, or does it just boot?