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.​

 

[Xyphoseos]

Ah, I see, you'll need the DSTT's backup.bin then (as you probsbly know, sorry for getting your hopes up).

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You aren't supposed to flash an r4i Gold 3ds plus, you have to open up the card and press the switch that puts it in ntrboot mode.

The problem is that I backup the flash before do things and when I want to restore it the progress stay to 0%

 

[ThisIsDaAccount]

The problem is that I backup the flash before do things and when I want to restore it the progress stay to 0%

That probably means your cart isn't fully supported, although it may just be a courrpted backup. There's also a *slight* possibility it's a contact issue, so try cleaning your card's contacts.

 

[Not_Awbawlisk]

You aren't supposed to flash an r4i Gold 3ds plus, you have to open up the card and press the switch that puts it in ntrboot mode.

I forgot it had that feature... I'm an idiot. Also, I tried opening up the cart and flipping the switch, then it turns out... After 3 tries, it worked. Thanks.

 

[MrMcTiller]

So can this fix a bootrom error?? IF SO, HOW?

 

[Deleted member 381889]

So can this fix a bootrom error?? IF SO, HOW?

1. Buy a pre-flashed card/flash your own using a DS/DSi
2. Set up GodMode9 and launch it through NTRBoot
3. Perform a CTRTransfer or restore a NAND backup

 

[MrMcTiller]

1. Buy a pre-flashed card/flash your own using a DS/DSi
2. Set up GodMode9 and launch it through NTRBoot
3. Perform a CTRTransfer or restore a NAND backup

Oh shit. I was preparing for a hardmod... but I guess I don't have to do it. Thank you!..... So just set Decrypt9 as "boot.firm"? (I prefer Decrypt9)

 

[Deleted member 381889]

Oh shit. I was preparing for a hardmod... but I guess I don't have to do it. Thank you!..... So just set Decrypt9 as "boot.firm"? (I prefer Decrypt9)

Yes, but Decrypt9 isn't updated anymore and GodMode9 is better

 

[MrMcTiller]

Yes, but Decrypt9 isn't updated anymore and GodMode9 is better

Whenever I use GM9 to try to restore a NAND backup, it doesn't work. But I will try. Thank you.

 

[Crackerboy]

Have you read the post I made in another thread?



There's also an experimental flasher for unhacked 3DSes, that seems to work fine. I can link it if you want

I am using an R4 DHC Gold Pro it says www.r4ishdc.com and has a 2017 in the top right corner. It keeps saying "Flashcart setup failed" when I try to do the ntr.

There are so many posts I can't keep them straight. I do have an Nintendo DS Lite, an unmodded "old" 3ds and a modded "new" 3ds... I tried to flash the cart using the new modded 3ds and it said it wasn't compatible.

Will keep reading but thought I would ask...

Thanks

 

[Quantumcat]

Whenever I use GM9 to try to restore a NAND backup, it doesn't work. But I will try. Thank you.

Install b9s first then launch GodMode9 as a Luma payload. That way it will have full access to your system's memory.

 

[remlei]

I have 3 piece of bricked DSTTi with me, I managed to unbrick them using ntrflasher (thanks).
I think I managed to brick them due to using the wrong kernel when updating the cart to work with DSi (i think you need to use their outdated kernel to get it work properly, and im dumb and go ahead update the cart without reading the readme file first, silly me).

although I did manage to recover them, they are practically useless since they no longer updated (kernel and flashcart bootrom wise) thus I cant use them on up-to-date 3ds firmware and some games doesnt work properly unless I patch them manually for AP checks.

So here I have a 3 NTRBoot carts here. Oh well....

 

[MrMcTiller]

Install b9s first then launch GodMode9 as a Luma payload. That way it will have full access to your system's memory.

I already have B9S, but sometimes GM9 doesn't fix anything. When I use Decrypt9, I works.

 

[Crackerboy]

Install b9s first then launch GodMode9 as a Luma payload. That way it will have full access to your system's memory.

So launch GodMode9 as a Luma payload and then launch the program to modify the Gold card?

 

[Crackerboy]

Install b9s first then launch GodMode9 as a Luma payload. That way it will have full access to your system's memory.

I did exactly as you said...and used the R4 option instead of R4 Gold and it worked perfectly. The card says it is gold pro...but the gold pro option failed everytime.

Modded an 11.6 3ds with ZERO issues.

THANK YOU!

 

[Quantumcat]

I did exactly as you said...and used the R4 option instead of R4 Gold and it worked perfectly. The card says it is gold pro...but the gold pro option failed everytime.

Modded an 11.6 3ds with ZERO issues.

THANK YOU!

Haha I have no idea what I said that helped you but glad you got it working!!

 

[sensei22]

Those are unsupported by ntrboot. Perhaps a flasher will be available in 2-3 weeks. But as it is right now, they are unsupported.

so is the dual core from "r4isdhc. com" supported or are there still some issues with it? thanks in advance

 

[MrJason005]

so is the dual core from "r4isdhc. com" is supported or are there still some issues with it? thanks in advance

.com is supported

 

[sensei22]

thanks man!

 

[dpad_5678]

I still can't get over how incredible this is. We started with downgrading to 4.x using GW, installing the MSET exploit, and using that TERRIBLY unstable CFW known as Palantine/PBT.

Now we're installing permanent CFW on any console with just a DS flashcart that's been collecting dust. Absolutely incredible.

 

[Crackerboy]

Haha I have no idea what I said that helped you but glad you got it working!!

I think you were actually talking to someone else..ROFL...

But for whatever reason going through Godmode9 and back out allowed me to inject ntrboot on my gold card.

Someone contacted me today asking about buying the new 2ds's...those should be 11.6 right? There shouildn't be an issue modding those with the NTR Boot?