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.​

 

[mybluered]

Very useful information.
Thanks a lot.

 

[Deleted User]

interesting thing:
if you restore a R4i-B9S backup (game mode) to a R4i-SDHC RTS it works but on every reboot you have to reinsert the cart for it to register

 

[NANASHI89]

Sorry if this has already been answered, but should I get another 3DS, will this work?

Sent from my SM-T280 using Tapatalk

 

[MrJason005]

Sorry if this has already been answered, but should I get another 3DS, will this work?
<snip>
Sent from my SM-T280 using Tapatalk

You can install CFW with this flashcart by using just your unhacked 3DS

 

[NANASHI89]

You can install CFW with this flashcart by using just your unhacked 3DS

Where can I find a Tutorial?

Sent from my SM-T280 using Tapatalk

 

[MrJason005]

Where can I find a Tutorial?

Sent from my SM-T280 using Tapatalk

Do you have the necessary kernel files on the flashcart's SD card? Can you use this flashcart to launch nds files?

 

[NANASHI89]

Do you have the necessary kernel files on the flashcart's SD card? Can you use this flashcart to launch nds files?

As in the kernel files from the site that makes said flashcart? (www.r4isdhc.com)

Sent from my SM-T280 using Tapatalk

 

[leafeyowley]

Is R4 SDHC Dual-Core RTS 2017 working with experimental flasher?

 

[leafeyowley]

Is R4 SDHC Dual-Core RTS 2017 working with experimental flasher?

Nevermind, it works.

 

[Deleted member 350372]

Hello. I know that the Gateway 3DS Blue card is not supported with ntrboothax. I am curious to know why is it not supported. Like is the flashcard ROM (or whatever it is called) only read and not read/write, or are there certain technical limitations that prevent any necessary commands to get this to work? I do sincerely apologize if this is the wrong thread to ask this type of question. Also, I have some old compatible DS flashcarts, so I am not in need to install CFW and all that nice jazz.

Note: All of this is out of curiousity & not of necessity.

 

[Zaphod77]

cuz nobody knows how to do it yet and the gateway team not being helpful.

if there is not enough flash storage, or the card is not flashable it can never work. if there is enough flash space, AND it's flashable AND people figure out the right commands and possibly needed encryption, it will work.

 

[MrJason005]

As in the kernel files from the site that makes said flashcart? (www.r4isdhc.com)

Sent from my SM-T280 using Tapatalk

Yes

 

[NANASHI89]

Yes

Yes, I have those.


Sent from my iPad using Tapatalk

 

[MrJason005]

Yes, I have those.


Sent from my iPad using Tapatalk

I will now provide the experimental flasher
(Note proceed at your own risk! There have been about 20 reports of the R4 SDHC Gold Pro 2017 working flawlessly with the flasher I am about to provide, and 0 confirmed bricks. But still, this is not an official build!)
https://github.com/d3m3vilurr/ak2i_ntrcardhax_flasher/files/1403142/ak2i_ntrcardhax_flasher_dsi.zip

Put the .nds file on the root of the SD card, launch it, choose "R4i SDHC Family", and follow the on-screen prompts

 

[Technicmaster0]

cuz nobody knows how to do it yet and the gateway team not being helpful.

if there is not enough flash storage, or the card is not flashable it can never work. if there is enough flash space, AND it's flashable AND people figure out the right commands and possibly needed encryption, it will work.

BTW Gateway blue card (and MT-Card blue card) both have the ace3ds plus hardware but there are serveral hardware revisions.

 

[pka4916]

I just bought that card for $20 for my new 2DS XL but reading the PDF I need "InstallFirm.zip"
The link in the PDF is dead. Is there another place to get that for that card?

Thanks

 

[Deleted member 350372]

cuz nobody knows how to do it yet and the gateway team not being helpful.

if there is not enough flash storage, or the card is not flashable it can never work. if there is enough flash space, AND it's flashable AND people figure out the right commands and possibly needed encryption, it will work.

Ahh gotcha. It would be nice if it eventually gets supported.

 

[pka4916]

sounds like i can trash my sky3ds+ card once i get the other one and use that card to install the 3ds files.. am i correct? or do i need to convert to cia first?

 

[TheCyberQuake]

sounds like i can trash my sky3ds+ card once i get the other one and use that card to install the 3ds files.. am i correct? or do i need to convert to cia first?

You need to convert. Luckily godmode9 can convert .3ds to .cia fairly easily. I believe there are also PC programs to do it.

 

[pka4916]

i think i saw in the pdf, that the card can do it as well. not sure if will work 100%.. i will check the godmode9. i think that's what on it i think


so this card install a CFW. and I don't need to worry if Nintendo is pushing a new FW out?
it's been so long I was into this..
and how do I see the difference ?

Don't think I need a 3DS card inserted anymore either then?