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 member 389726]

I hope this will come to. I fried my nand a few months ago when permanently hardmodding my n3ds and I now have an expensive paperweight.

Edit: wait. How can we use ntrboothax with a fried 3ds when we can't even go to sleepmode when we're on bootrom error screen.

Sent from my SM-G950F using Tapatalk

Because this boots before that does. Simply put.

 

[GerbilSoft]

Edit: wait. How can we use ntrboothax with a fried 3ds when we can't even go to sleepmode when we're on bootrom error screen.

"Sleep mode" isn't important. What's important is the state of the lid sensor.

Boot ROM checks for Start+Select+X, plus an activated lid sensor.

 

[Shigure20]

I have two bricks，one is bootrom error
，the other is black screen when i boot my 3ds. : (

 

[Xyphoseos]

I have two bricks，one is bootrom error
，the other is black screen when i boot my 3ds. : (

For the black screen try the recovery mode, hold L+R+Up+A and update

 

[RedBlueGreen]

For the black screen try the recovery mode, hold L+R+Up+A and update

If it's completely fucked like they flashed the wrong system firmare (O3DS on N3DS or vice-versa) that won't work.

 

[Clector]

It should work for you if the problem is just a wrong injected Nand.

 

[RedBlueGreen]

It should work for you if the problem is just a wrong injected Nand.

Recovery won't but ntrboothax or whatever we're calling it will. Flashing the wrong console nand or someone else's nand hard bricks. Recovery mode is in the nand so if the console can't read the nand it can't do recovery.

 

[BL4Z3D247]

a myth.

No it's not, it just doesn't happen often anymore since firmware 8.1 was released and now SigHax/B9S.

There are two ways that I'm aware of, being on any firmware under 8.1 and messing with the LED notification light or if you put a N3DS into sleep mode on firmware 2.1.

 

[Deleted member 381889]

if you put a N3DS into sleep mode on firmware 2.1.

90% sure that's not confirmed

 

[BL4Z3D247]

90% sure that's not confirmed

Fair enough but that's how it was stated in Plailect's guide.

 

[Deleted member 381889]

Fair enough but that's how it was stated in Plailect's guide.

Putting a New 3DS on 2.1.0 in sleep mode is known to cause a BRICK!
This only happens when shutting the lid while your device is on; this does not apply to turning your device off.
Your device only enters sleep mode when the lid is closed. It is not on a timer or anything like that.
Once on 2.1.0, you should continue without delay to avoid any possibility of this happening!

No mention of an MCU brick here.

 

[Quantumcat]

No mention of an MCU brick here.

It used to say "unrecoverable brick".

 

[BL4Z3D247]

It used to say "unrecoverable brick".

I may have just assumed it meant an MCU brick.

No mention of an MCU brick here.

The guide changes all the time I thought at one point it said "MCU brick which is unrecoverable" it definitely said "unrecoverable brick" as @Quantumcat posted. I may have made an assumption, my bad.

 

[Quantumcat]

I may have just assumed it meant an MCU brick.


The guide changes all the time I thought at one point it said "MCU brick which is unrecoverable" it definitely said "unrecoverable brick" as @Quantumcat posted. I may have made an assumption, my bad.

I assumed the same thing, and I'm pretty sure it is what he meant when he wrote it. He just didn't want to confuse noobs with specialist terminology that they wouldn't be familiar with.

 

[Shigure20]

If it's completely fucked like they flashed the wrong system firmare (O3DS on N3DS or vice-versa) that won't work.

Yes，still can't go to recovery mode，start up display“an error has occurred.
Hold down the POWER Button to turn off the power,then turn it on and try again。
For help,visit support.nintendo.com.”

 

[Sakib6699]

I got used console for cheap, it is having old firmware 1.1.0-0U but strange thing is that it has browser of firmware 10.7.0.32, I can just play DS games but when I try 3ds games it says firmware update require when and it wont update , how this is possible I tried all entry points but nothing worked, can this be fixed with this or my console is some kind of bricked?

edit: i am not able to boot in recovery mode.

 

[Toni456]

I got used console for cheap, it is having old firmware 1.1.0-0U but strange thing is that it has browser of firmware 10.7.0.32, I can just play DS games but when I try 3ds games it says firmware update require when and it wont update , how this is possible I tried all entry points but nothing worked, can this be fixed with this or my console is some kind of bricked?

edit: i am not able to boot in recovery mode.

Yes this can definitely help, all you have to do is CTR Transfer another firmware into your nand and it should fix your Frankenstein firmware.

 

[runetoonxx2]

Are gateway blue cards flashable

 

[Quantumcat]

Yes this can definitely help, all you have to do is CTR Transfer another firmware into your nand and it should fix your Frankenstein firmware.

He doesn't have a9lh or b9s so he can't so this.

 

[Toni456]

He doesn't have a9lh or b9s so he can't so this.

Once Magnethax is released he can install one of them.