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.​

 

[DeslotlCL]

Will they need testers or something like that? I'm willing to be one since i have a acekard 2i and a ds lite to flash it and of course being on 11.4 for doing some stupid shit lol

 

[astrangeone]

If you need a tester, I have a couple of cards that I can use as well, and a DS Lite...

 

[Baoulettes]

Hi
I just want information is this

reflashable?
I knew DSTwo original does as it can be flashed in case of card brick etc but this one I have no idea.
I barely used yet.
(It come with N3ds <3 and thanks this person because if that could revive my beloved o3ds )

 

[wiiarctus]

But how would we reflash a flashcard?^^

 

[Gamer4647]

The R4i cards did have a SaveDongle device, which let you plug in DS and 3DS cards to the computer to make save backups.
And then you have the updates for the 3DS variations.

The flashcard ban in the UK might be just for R4 cards as Kotaku states in their article, but it'll still make it a problem over here.

 

[DeslotlCL]

But how would we reflash a flashcard?^^

Pretty sure it will be an nds file which you have to run like when you had to update its bootloader on a ds lite or a dsi with a compatible firmware.

 

[wiiarctus]

Pretty sure it will be an nds file which you have to run like when you had to update its bootloader on a ds lite or a dsi with a compatible firmware.

But @Lia said it isn't a NDS file and because of that I'm asking how to reflash a flashcard.^^

 

[Gamer4647]

Pretty sure it will be an nds file which you have to run like when you had to update its bootloader on a ds lite or a dsi with a compatible firmware.

I hope it's that simple. There isn't anything on their site though apart from kernel upgrades.
Derp.

 

[DeslotlCL]

But @Lia said it isn't a NDS file and because of that I'm asking how to reflash a flashcard.^^

I mean, it's not an nds file you have to run once the flashcard is booted, the nds file i'm talking about is the one that will reflash the flashcard firmware.

 

[wiiarctus]

I mean, it's not an nds file you have to run once the flashcard is booted, the nds file i'm talking about is the one that will reflash the flashcard firmware.

But no one knows how to "reflash" a flashcard?! xD^^

 

[the assaf]

To the FAQ:
Q: When will gateway adapt this to their new blue card?
A: Soon™

I will like to remind you guys, that using a magnet is forbidden by the manual. #RTFM

 

[osm70]

The R4i cards did have a SaveDongle device, which let you plug in DS and 3DS cards to the computer to make save backups.
And then you have the updates for the 3DS variations.

The flashcard ban in the UK might be just for R4 cards as Kotaku states in their article, but it'll still make it a problem over here.

I am not from the UK, so maybe I'm wrong about this, but to me, it doesn't seem like a huge problem. I googled for like 10 minutes and found 6 flashcard selling websites that ship to the UK.

 

[kublai]

acekard anyone?

 

[Deleted member 381889]

acekard anyone?

What about them?

 

[dpad_5678]

Please don't spread false information. We have to be able to completely flash the flashcard, so some of these may not work

(unconfirmed, just speculation!!)

---------------

How would we even flash it?

We would replace the main files of the flashcart with Godmode9. I just looked into the Gateway Blue Card's files, and there's actually a Deep Labrynth ROM (64MB), as well as a trimmed .trim.nds ROM along with it (60.2MB iirc).

 

[kublai]

So if you live at the North pole do you still need a magnet?

 

[Deleted User]

So far both of the quotes in my sig came from this thread.

So if you live at the North pole do you still need a magnet?

 

[wiiarctus]

---------------

We would replace the main files of the flashcart with Godmode9. I just looked into the Gateway Blue Card's files, and there's actually a Deep Labrynth ROM (64MB), as well as a trimmed .trim.nds ROM along with it (60.2MB iirc).

I just found a Spongebob AP ROM as well as the .trim.nds ROM haha

 

[Deleted User]

@dpad_5678 but the problem is, somebody could see your post and say "OH BOY I AM GOING TO BUY ONE OF THOSE FLASHCARDS!" and then it won't work and your post is to blame.

 

[dpad_5678]

So if you live at the North pole do you still need a magnet?

I just found a Spongebob AP ROM as well as the .trim.nds ROM haha

I copied the two nds files from my card to my PC, but I wonder if we can write to the flashcart. I'll putting a different ROM on the cart when I get home.

Also, loading the non trimmed ROM in DeSmuMe does nothing, but loading the .trim.nds file shows me the R4 "Loading...." screen. Weird.