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]

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?

ChipID : F5EED877
HW Rev : F5EED875
if it matter it has alex rider icon

 

[annson24]

Looks like HandsomeMatt finally made a pull request with DSTT implementation.

https://github.com/kitling/flashcart_core/pull/43

Edit: latest commit from the pull now has a working DSTT implementation. Can somebody compile so we can test it out?

Edit2: DSTTs with flashchip of MACRONIX MX29LV400B are the only supported cart at the moment, other flashchips are still WIP.

Too bad all my three carts aren't MACRONIX chip.

 

[mvmiranda]

Looks like HandsomeMatt finally made a pull request with DSTT implementation.

https://github.com/kitling/flashcart_core/pull/43

Edit: latest commit from the pull now has a working DSTT implementation. Can somebody compile so we can test it out?

Edit2: DSTTs with flashchip of MACRONIX MX29LV400B are the only supported cart at the moment, other flashchips are still WIP.

Too bad all my three carts aren't MACRONIX chip.

I have it compiled!
If anyone want to test, please, let me know!

PS: I don't have any DSTT to test this out.

 

[annson24]

I have it compiled!
If anyone want to test, please, let me know!

PS: I don't have any DSTT to test this out.

I can test that, although as per handsomematt mine is not supported yet. He is, however, pushing another commit "later after work," supporting more flashchips.

Sent from my SM-G950F using Tapatalk

 

[mvmiranda]

I can test that, although as per handsomematt mine is not supported yet. He is, however, pushing another commit "later after work," supporting more flashchips.

Sent from my SM-G950F using Tapatalk

Yeah!
I'll keep an eye on his github

 

[Snooli]

Isn't the DSTT cheaper than nromal CTR games?

 

[RedBlueGreen]

With DSTT being implemented is there any news about R4 SDHC support yet? Excluding that it's planned.

 

[spkuja]

I have it compiled!
If anyone want to test, please, let me know!

PS: I don't have any DSTT to test this out.

I have one! I'm happy to test if it works. I am assuming that the process is reversible one I've used it for its purpose? (Though I have another flash card so I'm not overly bothered)

 

[Ramses]

I got a DSTT, verified legit. I'll be a test dummy if needed too.

 

[mvmiranda]

I have one! I'm happy to test if it works. I am assuming that the process is reversible one I've used it for its purpose? (Though I have another flash card so I'm not overly bothered)

I got a DSTT, verified legit. I'll be a test dummy if needed too.

Just sent you guys a PM with the file.

Please, be advised that I'm not "affiliated" with HandsomeMatt or anything like it... I'm just a regular guy whom compiled by himself the code.
Also, I had to "fix" a lot of "issues" (MakeFile, missing imports, etc) so use the file with caution and at your own risk!

Let us know if it works!

 

[MagicKnight]

Are there any news about Supercard DS2 support?
Is anybody currently working on it?

 

[spkuja]

Okay, so I tested the "beta" version It seems to flash okay and restore okay initially but I didn't want to boot safeBS9Istaller from boot.firm so I guess it didn't work. It now won't restore my flash card backup either. Time to wait for the official release I think! (I had previously restored the backup and it was fine). I don't know if @Ramses had any luck? I you would be so kind could you send me a copy of your backup (if you made one) so we can compare the two?

 

[Ramses]

no luck, I couldn't even flash it correctly, so i'll hold that L for now

 

[Izmenter]

Hi! I have a 3DS without custom with a compatible flashcard (R4i Gold RTS), I inyected perfectly the ntrboot in the flashcard, so I copied and pasted the necessary files into the SD and when I press X + Start + Select + Power with the magnet never load SafeB9SInstaller and the console start in sleep mode... I've already tried it in myriad ways, but it's still not loaded... Can anybody help me?

Sorry for me bad english

 

[Deleted member 381889]

Are there any news about Supercard DS2 support?
Is anybody currently working on it?

It's planned, but it doesn't seem like it's being worked on at the moment.

 

[failzers]

How would the unbricking process go for a o3dsxl with a firm brick? aka, screens don't start, and the blue led just stays on.

 

[Viymes]

I am trying to NTRBoothax. I got a R4i 3DS Gold RTS and managed to flash NTRBoothax on it (I guess). I'am using the single system method with a N3DS and after preparing the sd card and putting it in the 3DS I'am trying to boot the flashcard. I have the magnet in place and the flashcard inserted but when I press the button combo the blue light goes on but the screens of the 3DS stay black and nothing happens. What could be the problem?

 

[Izmenter]

I am trying to NTRBoothax. I got a R4i 3DS Gold RTS and managed to flash NTRBoothax on it (I guess). I'am using the single system method with a N3DS and after preparing the sd card and putting it in the 3DS I'am trying to boot the flashcard. I have the magnet in place and the flashcard inserted but when I press the button combo the blue light goes on but the screens of the 3DS stay black and nothing happens. What could be the problem?

Same here xD

 

[Deleted member 381889]

How would the unbricking process go for a o3dsxl with a firm brick? aka, screens don't start, and the blue led just stays on.

Flash the flashcard, prepare your 3DS's SD, put the magnet on and the flashcard in, and boot while holding the button combination

I am trying to NTRBoothax. I got a R4i 3DS Gold RTS and managed to flash NTRBoothax on it (I guess). I'am using the single system method with a N3DS and after preparing the sd card and putting it in the 3DS I'am trying to boot the flashcard. I have the magnet in place and the flashcard inserted but when I press the button combo the blue light goes on but the screens of the 3DS stay black and nothing happens. What could be the problem?

When you don't use NTRBoot, does the 3DS boot up like normal?

 

[Viymes]

Flash the flashcard, prepare your 3DS's SD, put the magnet on and the flashcard in, and boot while holding the button combination

When you don't use NTRBoot, does the 3DS boot up like normal?

Yes when I turn the 3DS on without the magnet and button combo it starts and shows the home. Altough all the apps/games that were once there are gone. It seems like the 3DS can't read the SD card or is this normal after putting the files on it.