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.​

 

[Clydefrosch]

it would be nice if some of the old and stupid flashcards ended up compatible just so they had one last use.
i'm looking at you, dusty old ds linker

 

[THYPLEX]

I can do this even with my old dstwo ?
Not the plus version

 

[Jecoconono]

I can do this even with my old dstwo ?
Not the plus version

currently only supported :

• Acekard 2i HW-44
• Acekard 2i HW-81
• R4i Gold 3DS RTS

planned:

• R4 SDHC Dualcore
• Supercard DS2

although i'm pretty sure it works for stuff that reflashable but i'm not certain.

 

[y0shim@ri0]

Since ntrboot, the r4i gold cart went up in price (on nds card):

 

[.Chris]

Okay, I was successfully able to boot into SafeB9SInstaller.

My o3ds' situation is that i had previously failed to flash the correct firmware, i flashed a N3DS instead of O3DS. How would I go about reinstalling the o3ds firmware?

 

[Jecoconono]

Since ntrboot, the r4i gold cart went up in price (on nds card):View attachment 95671

ehm? it costs even less here.

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

Okay, I was successfully able to boot into SafeB9SInstaller.

My o3ds' situation is that i had previously failed to flash the correct firmware, i flashed a N3DS instead of O3DS. How would I go about reinstalling the o3ds firmware?

I'm not very good at this sort of thing but I'd imagine just flashing the old 3ds firmware.

 

[AmeenX]

Strange. I have the same exact one, and it's telling me that it's incompatible.

Clean the pins of the card with alcohol

 

[Urbanshadow]

I guess I best not suggest using an electro magnet then, but really that's exactly what happens anyway by closing the lid, the speakers are magnetic and trigger sleep mode

The n2dsxl has a dedicated magnet then? (it has no speakers on the top screen, magnet trick still works)

 

[Mangraz]

My original question has been solved. So how do I delete a message on the mobile version?

 

[Orbiting234]

Trying to install this on my real (not clone) Acekard 2i via my already hacked O2DS and having some issues.
Short of it is that backup.bin dumped from it is always 0 bytes and I can't get the inject to work either.

Card stats:

I believe it is on the last Ak2i fw as it currently shows as "Pippa Funnell"
ChipID: 00000FC2
HW Rev: 81818181
Detected: Acekard 2i HW-81

Backup goes through the process and looks like it works but resulting file on SD is zero.
And then injecting gives a "Firm was not found" error.

Tried chkdsk on the SD card, tried different SD card altogether and verified that the files are in the right places (boot9strap_ntr.firm and boot9strap_ntr.firm.sha both in the /ntrboot/ folder). I'm sure it is something simple but I'm scratching my head on this at the moment.

 

[linuxares]

Trying to install this on my real (not clone) Acekard 2i via my already hacked O2DS and having some issues.
Short of it is that backup.bin dumped from it is always 0 bytes and I can't get the inject to work either.

Card stats:

I believe it is on the last Ak2i fw as it currently shows as "Pippa Funnell"
ChipID: 00000FC2
HW Rev: 81818181
Detected: Acekard 2i HW-81

Backup goes through the process and looks like it works but resulting file on SD is zero.
And then injecting gives a "Firm was not found" error.

Tried chkdsk on the SD card, tried different SD card altogether and verified that the files are in the right places (boot9strap_ntr.firm and boot9strap_ntr.firm.sha both in the /ntrboot/ folder). I'm sure it is something simple but I'm scratching my head on this at the moment.

Try cleaning the contacts a little bit. Might be dirt on them.
Plus can you boot the card with AKAIO on it?

 

[Orbiting234]

Try cleaning the contacts a little bit. Might be dirt on them.
Plus can you boot the card with AKAIO on it?

Yeah, I can use it as a DS flashcart with the AKAIO frontend on my DSL, DSi, and this hacked O2DS just fine with no issues.

 

[linuxares]

Yeah, I can use it as a DS flashcart with the AKAIO frontend on my DSL, DSi, and this hacked O2DS just fine with no issues.

What version are you running of the flasher?

 

[Orbiting234]

What version are you running of the flasher?

Ah ha, think I just found my problem. Was using the plain B9S files I had always been using for hacking systems and not the B9S_ntr files. -_-
/facepalm

 

[linuxares]

Ah ha, think I just found my problem. Was using the plain B9S files I had always been using for hacking systems and not the B9S_ntr files. -_-
/facepalm

Opsi! Easy to do that mistake hehe

 

[gjac1]

I have an R4i Revolution card , ntrboot flasher 0.1.2 shows the card as ChipID : 00000FC2 and HW Rev: 00000000.

Is it possible to cross flash or whatever you call it, to make it think it is an Acekard 2i seeing as it has the same chip ?

 

[Snooli]

ehm? it costs even less here.

Where's that from? I found this. It might not be such a large sale, but still...

 

[FunThomas]

Where's that from? I found this. It might not be such a large sale, but still...

but it seems you have to buy 10 pieces ;-)

 

[Snooli]

I have an R4i Revolution card , ntrboot flasher 0.1.2 shows the card as ChipID : 00000FC2 and HW Rev: 00000000.

Is it possible to cross flash or whatever you call it, to make it think it is an Acekard 2i seeing as it has the same chip ?

There has been several succesful attemps in similar situation, so for as long as it detects it as one of the compatible one, it might be worth the try.

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

but it seems you have to buy 10 pieces ;-)

What a shame, I'll have to resell the rest.. for $25!

 

[gamesquest1]

The n2dsxl has a dedicated magnet then? (it has no speakers on the top screen, magnet trick still works)

Spoiler