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.​

 

[dodol]

Check the back of the card above the far right pin for a number. I've got a rev 5 which can work (with some help).
Rev 6 isn't working yet. 7,4 unknown, 8+ should work with existing flasher.

by any chance do you still have the precompiled file ?
or will it implemented into newer version of ntrboot_flasher ?

 

[zoogie]

by any chance do you still have the precompiled file ?
or will it implemented into newer version of ntrboot_flasher ?

I still have no idea what flashcard revision you have.
That's very important to know so I can help you.

 

[dodol]

I still have no idea what flashcard revision you have.
That's very important to know so I can help you.

I don't have it yet (I only own DSTWO), but I found someone selling V5 very cheap.
He did try flashing it normal ntrboothax and it didn't work.

 

[TheCyberQuake]

Just out of curiosity, where's the sensor location for the O3DS and O3DS XL? I know the N3DSXL it is to the right of the start/select buttons

O3ds xl for me was between a and y

 

[Baoulettes]

oooh, with this it seem it can detect my SuperCard DSTWO as
ChipID : 7FFFBEBF
HW Rev: 7FFFBEBF
The fun fact.... it is fully bricked and no on DS/DSI or 3DS detect it as game.
Any with DSTwo can try and tell what the id and rev are?

 

[izumo]

oooh, with this it seem it can detect my SuperCard DSTWO as
ChipID : 7FFFBEBF
HW Rev: 7FFFBEBF
The fun fact.... it is fully bricked and no on DS/DSI or 3DS detect it as game.
Any with DSTwo can try and tell what the id and rev are?

My DSTWO id and rev
ChipID : F7FFFA7F
HW Rev : F7FFFB7F

 

[Baoulettes]

I see maybe there is different revision ?
Here my card ''board'' maybe mine is different somehow ^^

Spoiler: Huge Picture

 

[iridescent12]

Which r4 sdhc dual core card is planned for support? r4isdhc.com or r4isdhc.hk?

 

[aos10]

Wait,DS2 is now supported?

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

oooh, with this it seem it can detect my SuperCard DSTWO as
ChipID : 7FFFBEBF
HW Rev: 7FFFBEBF
The fun fact.... it is fully bricked and no on DS/DSI or 3DS detect it as game.
Any with DSTwo can try and tell what the id and rev are?

How i can find this info?

 

[Alex S]

Wait,DS2 is now supported?

No. Its just a "planned cart" that isnt even in progress. Itll probably be shelfed and never happen with my luck (i even have the original DSONE with same chip ID as the DSONEi and it still apparently is unsupported according to the list.)

 

[izumo]

I see maybe there is different revision ?
Here my card ''board'' maybe mine is different somehow ^^

Spoiler: Huge Picture

My DSTWO '' board ''

Spoiler

 

[Traiver]

My DSTWO '' board ''

Spoiler

View attachment 97141 View attachment 97142

Looks like mine...

 

[Alex S]

Well my DSTWO has the strangest ids. Kit Says ChipID: FFFFFFFE and HW Rev: FFF5FFFE. And i checked multiple times. Do i have a defective cart or is the software not reading it correctly?

 

[doogie]

Anyone try a M3 DS Real card to see if they work?

 

[Alex S]

For reference i took screenshots of this strange thing with both my DSTWOS. As you can see one seems to report a completely wrong ID and the other looks normal. http://imgur.com/a/il1Pl

 

[NicknameGoesHere]

Is it possible to use an unsupported cart that works on 11.5, and hotswap it with a blocked, compatible cart (ak2i), and flash it with ntrboot as a single system?

 

[mvmiranda]

I have two acekards: one that reads 2i and another just "i".
I tried the other one without the 2 and it doesn't work... looking online the board matches one older Ak2i:

Does anyone know if it's planned to be included?

 

[spank226]

Hello,

I'm sorry if this is another "will this card work?" post. I've seen that R4i Gold 3DS (RTS) and R4i DS Happy Box 2.0 3DS are supported cards, and I have the R4i Gold Pro from r4isdhc

AFAIK, this card should work. Is this true? If not, will this be supported or is/will be some workaround for it?

Thanks in advance and, again, sorry for the same post.

 

[_Emmo]

Hello,

I'm sorry if this is another "will this card work?" post. I've seen that R4i Gold 3DS (RTS) and R4i DS Happy Box 2.0 3DS are supported cards, and I have the R4i Gold Pro from r4isdhc

AFAIK, this card should work. Is this true? If not, will this be supported or is/will be some workaround for it?

Thanks in advance and, again, sorry for the same post.

Devs are working on this card afaik, can't tell you how long it will take though. Just buy an acekard / r4i gold from nds-card if you want to get cfw as soon as possible.

 

[xXDungeon_CrawlerXx]

Got a N3DS XL ~ a year ago.
When I boot it, it has a bluescreen
BOOTROM: 8046
ERRCODE: 00F800EF
FFFFFFFF FFFFFFFF
00000022 00000000

Can I fix this with NTRBoothax?
Tried to boot into B9S Safeinstaller (worked on a bricked n3ds (non xl) without Bluescreen)