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.​

 

[Izeman]

Oh, a thing I'm also wondering.
Is a MicroSD card needed to flash NtrBoot? Or does it flash to the card itself?
I need to know if I have to backup my games and saves first before proceed.

I’m quite confident it flashes the chip on the card; a microSD shouldn’t be required.

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

I finally received my R4i Gold and managed to install Luma CFW on my main n3DSXL. That’s waaaay better than my good old 3DS.
Thank you all for your support and explanations

 

[Mat312]

Hi,
my card looks similiar to the fifth one from the right from the compatibility list - the only difference is that my card's got a wifi sign and "v1.4.1" sign.
Will it still work?

(I would like to add images but for some reason I can't, sorry)

 

[Redferne]

Hi,
my card looks similiar to the fifth one from the right from the compatibility list - the only difference is that my card's got a wifi sign and "v1.4.1" sign.
Will it still work?

(I would like to add images but for some reason I can't, sorry)

Why don't you just try? Worst case scenario it will just not work...

 

[Mat312]

If it wouldn't work, would it only broke the card or the whole 2ds system?

 

[Redferne]

If it wouldn't work, would it only broke the card or the whole 2ds system?

If the card is not recognized nothing happen.

 

[Mat312]

Oh, I see. Thanks then, guess I'll just try it out.

 

[PolskiWisnia]

How long does nds-card send to the eastern Europe? Would it arrive till 20th November? I'll order it on Friday with Hong Kong Registered Air Mail

 

[Razor83]

Can anybody explain why the dumps for the R4i Gold 3DS are 4MB, and the Acekard 2i's are 16MB?
As far as I know both carts use 2MB (16Mbit) flash chips, so shouldn't the dumps be 2MB?

Also, is it now possible to create our own headers? It would be nice to finally make the Acekard2i compatible with DSi firmware 1.4.5.

 

[none888]

Hey quick question,since i have a bricked 3ds should i wait for dual core support or just go buy a ntrboot compatible card ?

 

[Quantumcat]

Hey quick question,since i have a bricked 3ds should i wait for dual core support or just go buy a ntrboot compatible card ?

Up to you, depends how much you value your time vs money.

 

[PolskiWisnia]

Did someone buy from NDS-card to the Eastern Europe? How long you waited for package?

 

[FreePlayFlorida]

bought one a few days ago, as had a R4 RTS, that isnt supported yet, or a Dual Core (again waiting on support) so figured easier just to buy one that is known good, hopefully be a couple of weeks tops to get to UK

 

[ganons]

So a friend got the r4ds and got onto the part where it says launch ak2i_ntrcardhax_flasher_dsi but it stays at a black screen. I believe he has the original 3ds

 

[PolskiWisnia]

bought one a few days ago, as had a R4 RTS, that isnt supported yet, or a Dual Core (again waiting on support) so figured easier just to buy one that is known good, hopefully be a couple of weeks tops to get to UK

Thanks
Are there any good resellers of R4i Gołd RTS in Europe?

 

[jubbagee]

Will this ever work for an m3ds real? I posted in other threads but im getting no response. Any ideas?

 

[Redferne]

Will this ever work for an m3ds real? I posted in other threads but im getting no response. Any ideas?

You can't flash a M3DS Real, so...

 

[jubbagee]

Ok thank you i never knew. Thanx for the reply

 

[busmanl30]

bought one a few days ago, as had a R4 RTS, that isnt supported yet, or a Dual Core (again waiting on support) so figured easier just to buy one that is known good, hopefully be a couple of weeks tops to get to UK

It's been two weeks for me to get dual core ur it's worth it

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

It's been two weeks for me to get dual core ur it's worth it

In the UK it should be a bit quicker they come come Japan or China idk tbh but for USA it's usually 2-4 weeks

 

[rorschach86]

Hey guys. So I followed the guide at 3dsguide and everything worked perfect! I am now running cfw on an 11.6 3ds. Now here is my issue. I tried to reflash the cart so i can use it again but now it no longer works. I get the logo to appear on my ds but it boots to a blank white screen. The card is not a clone. I got it from r4ids.cn. i have the most recent wood kernel on there. I have tried all three fw that are available on the guide. Any ideas?

 

[MrJason005]

Hey guys. So I followed the guide at 3dsguide and everything worked perfect! I am now running cfw on an 11.6 3ds. Now here is my issue. I tried to reflash the cart so i can use it again but now it no longer works. I get the logo to appear on my ds but it boots to a blank white screen. The card is not a clone. I got it from r4ids.cn. i have the most recent wood kernel on there. I have tried all three fw that are available on the guide. Any ideas?

Is the SD card in the R4 FAT32?