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.​

 

[VashTS]

Bottom screen is $20 and I charge $27 to install them. Top screen, I don't bother with them.

Top screen repair SUCKS i dont blame you lol. i have a damaged one that i just want to unbrick though - mainly just because i want to but its also good for the other parts on it.

so stoked for this to release, this is amazing. i have 2 3ds systems that are on 11.4 with no dsiware so its either hardmod or this, and im hoping this comes out soon. i have a dstwo and an AK2i so my body is ready!

 

[Yepi69]

I hope it will, my card is a DSTT clone XD. Then again, they might just release it as a .dat or .nds or something...

Reminder that its not an .nds rom, it has to be reflashed.

 

[stl25]

Cyclods is flashable right? I have DSTwo also.

 

[BARNWEY]

Not really, prices of cards will skyrocket, and well I can easily sell a hardmod to repair a brick cheaper than the cost of a card

True, I guess you're right XD

Reminder that its not an .nds rom, it has to be reflashed.

Oh, I didn't even catch that part. I kinda tend to space out sometimes XD. Well, at least I have boot9strap already installed XD

 

[noX1609]

This sounds great I own a Dstwo+ and a blue Gateway card.
I hope one of the two can be used with this Friends would be happy because there are some who bricked their system.

 

[Redirr]

No way. My first and only otpless bricked new 3ds are into its box brand new untill this day. I left it there to remeber me always do backup.

Cant believe ill give its life back.

 

[Deleted User]

.... does this fix bluescreen of death? And if this is real. HOLY CRAP. I hope it isn't just limited to ds flash cards. But maybe 3ds flash cards as well? This is going to be amazing to see this.

 

[Joom]

Sweet, the 3DS is getting a classier, less dirty Pandora. This has my nostalgia going crazy.

 

[ArmoredGuns1]

How can a joke topic reach 9 pages? lol

 

[Joom]

.... does this fix bluescreen of death? And if this is real. HOLY CRAP. I hope it isn't just limited to ds flash cards. But maybe 3ds flash cards as well? This is going to be amazing to see this.

DS carts only (it's called ntrcardhax), unfortunately, and yes, this can fix any type of bricks that aren't hardware related from what I've heard on IRC. Even MCU bricks.

 

[Deleted member 381889]

.... does this fix bluescreen of death? And if this is real. HOLY CRAP. I hope it isn't just limited to ds flash cards. But maybe 3ds flash cards as well? This is going to be amazing to see this.

Yes. Also, it is limited to nds flash cards.

 

[Joom]

How can a joke topic reach 9 pages? lol

The joke flew over my head. Hedgeberg was talking about this in her stream earlier tonight, but I guess they got us. I've also seen it demonstrated outside of this thread, but those were jokes too I suppose.

@Lia, it should be noted that NTR cartridges have bootrom access when booted from directly, which is why this works.

 

[Shawnj]

This is done with the acekard 2i right?

most likely. The only 2 commercially available flashcards that are physically able to do this (because they can be reflashed) are the DSTWO and the Acekard 2i, and the DSTWO is much more expensive than the AK2i, so it's probably the AK2i.

Side note: If you're thinking of buying an NDS flashcard for your 3DS, this is the best one to get regardless of if NTRCardhax is released for it or not because you can reflash it, meaning Nintendo will never be able to block it from running, and because it's much cheaper than the DSTWO, the only other flashcard that can be reflashed, because it lacks most of the hardware that made the DSTWO so useful on the DS/DSi (being able to use an internal CPU to run homebrew not powerful enough to run on the DS natively, such as GBA/SNES emulators), which is negated mostly by being able to use CFW on your 3DS for emulators.

 

[BARNWEY]

most likely. The only 2 commercially available flashcards that are physically able to do this (because they can be reflashed) are the DSTWO and the Acekard 2i, and the DSTWO is much more expensive than the AK2i, so it's probably the AK2i.

Side note: If you're thinking of buying an NDS flashcard for your 3DS, this is the best one to get regardless of if NTRCardhax is released for it or not because you can reflash it, meaning Nintendo will never be able to block it from running, and because it's much cheaper than the DSTWO, the only other flashcard that can be reflashed, because it lacks most of the hardware that made the DSTWO so useful on the DS/DSi (being able to use an internal CPU to run homebrew not powerful enough to run on the DS natively, such as GBA/SNES emulators), which is negated mostly by being able to use CFW on your 3DS for emulators.

Yes it is, though Normatt is going to try to make it compatible with other flash cards. If Normatt somehow makes it compatible with the R4, or the DSTT, I would be very hyped XD

 

[Shawnj]

Yes it is, though Normatt is going to try to make it compatible with other flash cards. If Normatt somehow makes it compatible with the R4, or the DSTT, I would be very hyped XD

You basically need an exploit for the DSTT card itself to write custom header data to run on it, there's no way otherwise to get something like NTRCardhax to run on a DSTT. Same for the R4.

That is, if you can even write custom header data to it.

 

[Deleted User]

ignore

 

[Deleted member 381889]

So... Would New sky 3ds + be one of those reflashable devices? because it can receive updates (orange button version, not blue.)

No, as it is not a NDS cartridge.

 

[Deleted User]

No, as it is not a NDS cartridge.

Yah I missed read that.

 

[Shawnj]

ignore

Okay, I'll ignore it.

 

[KiraYamatoSD]

DS carts only (it's called ntrcardhax), unfortunately, and yes, this can fix any type of bricks that aren't hardware related from what I've heard on IRC. Even MCU bricks.

This will also fix the softbrick from tubehax? I can boot into the 3DS but cannot run the system update due to tubehax.