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.​

 

[annson24]

It is, I'm using the b9s installer firm, should I be using a different one?

Did you follow the guide? Or perhaps you're using the one that uses ntrboot.bin instead. Try ro rename the boot.bin to ntrboot.bin

Edit: what the heck is going on with my reply.

Sent from my SM-G950F using Tapatalk

 

[zakeblast]

Did you follow the guide? Or perhaps you're using the one that uses ntrboot.bin instead. Try ro rename the boot.bin to ntrboot.bin

Edit: what the heck is going on with my reply.

Sent from my SM-G950F using Tapatalk

Still just turns off as described.
Also, you said .bin for both filenames, but i kept them as .firm, was that intentional or accidental?

 

[PolskiWisnia]

I think it was accidental. B9S boots from .firm files. A9LH boots from .bin files.

 

[annson24]

Still just turns off as described.
Also, you said .bin for both filenames, but i kept them as .firm, was that intentional or accidental?

Sorry I meant .firm. Force of habit I guess haha.

Sent from my SM-G950F using Tapatalk

 

[Bidouilleur]

Hey guys

I'm struggling with my bricked New 3DS, I bricked this console in January 2016 (flashed an Old 3DS 9.2 firmware...), so I ordered an R4 3DS RTS from NDS-Cards, which is a kinda fast website (2 weeks, kinda nice considering i'm in France and the website is based in China).

I flashed it with a friend's CFW'd Old 3DS, everything was fine.

But I'm struggling about launching the hack on my Bricked 3DS.

I'm putting the R4 card, I copied some necessary files (well the most necessary is the boot.firm I believe at the card root, I have SafeB9SInstaller there) on the Micro SD and also inserted it.

But the problem is that I just can't launch the hack. My N3DS blue led is "constant" not blinking or anything else) everytime I try this, I believe that it's a logical thing. I'm doing the X+Start+Select+Power combinaison, staying on those buttons for several seconds but nothing.

I tried the magnet on the Old 3DS : working fine. I'm trying different locations for my bricked N3DS but nothing. And the thing is that I can't know where I must put it because the console just let me see a nice black screen on boot (no sleep mode).

Anyone else have a N3DS and tried the hack ? (I seen a N3DS XL tutorial on Youtube, a 3DS XL as well but can't find a N3DS one...)

Thanks guys

EDIT : I'm using a 64 Gb Micro SD formatted on PC with a Fat 32 format tool.

 

[Xeonhawk]

Hey guys

I'm struggling with my bricked New 3DS, I bricked this console in January 2016 (flashed an Old 3DS 9.2 firmware...), so I ordered an R4 3DS RTS from NDS-Cards, which is a kinda fast website (2 weeks, kinda nice considering i'm in France and the website is based in China).

I flashed it with a friend's CFW'd Old 3DS, everything was fine.

But I'm struggling about launching the hack on my Bricked 3DS.

I'm putting the R4 card, I copied some necessary files (well the most necessary is the boot.firm I believe at the card root, I have SafeB9SInstaller there) on the Micro SD and also inserted it.

But the problem is that I just can't launch the hack. My N3DS blue led is "constant" not blinking or anything else) everytime I try this, I believe that it's a logical thing. I'm doing the X+Start+Select+Power combinaison, staying on those buttons for several seconds but nothing.

I tried the magnet on the Old 3DS : working fine. I'm trying different locations for my bricked N3DS but nothing. And the thing is that I can't know where I must put it because the console just let me see a nice black screen on boot (no sleep mode).

Anyone else have a N3DS and tried the hack ? (I seen a N3DS XL tutorial on Youtube, a 3DS XL as well but can't find a N3DS one...)

Thanks guys

EDIT : I'm using a 64 Gb Micro SD formatted on PC with a Fat 32 format tool.

I'm having the exact same issue as you, my n3dsxl has the blue LED come on but it's just blank screens, I followed 3ds.guide to the letter and NTR won't come on, I know the acekard was flashed properly because I tested booting NTR with the magnet on my o3ds

 

[Bidouilleur]

I'm having the exact same issue as you, my n3dsxl has the blue LED come on but it's just blank screens, I followed 3ds.guide to the letter and NTR won't come on, I know the acekard was flashed properly because I tested booting NTR with the magnet on my o3ds

Nice to know that i'm not the only one to have this issue, I wonder if a N3DS downgrade to an O3DS firmware is a permanent brick... I think not, only the MCU are ?

 

[Xeonhawk]

Nice to know that i'm not the only one to have this issue, I wonder if a N3DS downgrade to an O3DS firmware is a permanent brick... I think not, only the MCU are ?

I know that my brick isn't an MCU as the light powers on and stays on unless manually turned off, this method is said to fix any brick except for that but it isn't working for me :/

 

[nl255]

Nice to know that i'm not the only one to have this issue, I wonder if a N3DS downgrade to an O3DS firmware is a permanent brick... I think not, only the MCU are ?

I know that my brick isn't an MCU as the light powers on and stays on unless manually turned off, this method is said to fix any brick except for that but it isn't working for me :/

Try using decrypt9wip to do the ctrtransfer rather than godmode9.

 

[Xeonhawk]

Try using decrypt9wip to do the ctrtransfer rather than godmode9.

My issue is that the NTR menu won't even show up, I hold the button combo with the magnet and my 3ds stays blank every time.

 

[PolskiWisnia]

Is that R4 has ROM or NAND?

 

[MrJason005]

Is that R4 has ROM or NAND?

It will be supported eventually:
https://github.com/kitling/flashcart_core/issues/6

 

[zoogie]

I wonder if the MCU firmware can read the HID register.
if(keysheld & NTRBOOT_COMBO) powerOff();
Makes you wonder if Nintendo would do that (if they could).

If someone out there is familiar with the MCU firmware and its abilities, please allay my fears

 

[Quantumcat]

I'm having the exact same issue as you, my n3dsxl has the blue LED come on but it's just blank screens, I followed 3ds.guide to the letter and NTR won't come on, I know the acekard was flashed properly because I tested booting NTR with the magnet on my o3ds

Try having lots of magnets around the right location. I thought mine want working either but then I spread the magnets around and it worked.

 

[Xeonhawk]

Try having lots of magnets around the right location. I thought mine want working either but then I spread the magnets around and it worked.

I managed to get it working by sliding some flashcard paper under it, but I can't get ctrnand or anything working.

 

[annson24]

I managed to get it working by sliding some flashcard paper under it, but I can't get ctrnand or anything working.

What do you mean ctrnand? As in ctrnand transfer? Install b9s first, then chainload gm9 from luma instead.

Sent from my SM-G950F using Tapatalk

 

[Bidouilleur]

I managed to get it working by sliding some flashcard paper under it, but I can't get ctrnand or anything working.

I tried this, nothing more, here is how I do :

- putting the R4 wIth a paper on the sticker side to push the connectors
- putting the magnet between A and B (found that it was the main place to put it for N3DS), also tried on the right of Start & Select
- pressing X+Start+Select+Power during some seconds
- nothing

The blue led is on, not blinking. I can power the 3DS with the magnet on without the button cominaison, is it logical ?

I tried everything with the micro SD, Fat 16 Fat 32, don't know if it's the SD fault...

The R4 works on an O3DS so i'm out of ideas for now... :\

 

[gamesquest1]

no, if the magnet is in the correct spot the 3ds won't turn on unless you press the button combo, just practice on the normal home screen getting the magnet to trigger sleep mode consistently

 

[sirben]

Hey guys I tried looked around for people who are selling these r4 cards since my one was a fake and found someone claiming that he has one r4i gold 3ds rts, is it legit ? I've noticed that there is a label that states the version of the card, but everything else seems pretty much the same.
View attachment 96909

 

[Bidouilleur]

no, if the magnet is in the correct spot the 3ds won't turn on unless you press the button combo, just practice on the normal home screen getting the magnet to trigger sleep mode consistently

The difficulty here is that it's a bricked N3DS :\

It was bricked when I downgraded the console with a O3DS 9.2 fiirmware back in January 2016, so I'm actually wondering if the 3DS is like "MCU'd" from this N3DS downgrade with an O3DS firmware...