NTRBoot Released!

It's here!
ntrboot_checklist_2.png

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!

:arrow: Release
:arrow: Guide
:arrow: Free NTRBoot Flashing
:arrow: Free B9S Installations

Here is SciresM's post about this

Please see SciresM's presentation on bootromhax.
 
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Creatable

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You do realise there are already several large threads of people doing just that? I'm not sure why you think that just because it's not useful to you personally that it's somehow redundant for everyone. People have recovered from bricks after months of waiting, this is a huge development in the scene.
Yes, but what about the people who want to start Homebrew and have waited months for this?
 

VashTS

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So this goes in the sd:/ntrboot/ folder and then just launch ntr flasher and flash the cart.

then put a file on the root named sd:/ntrboot.firm and as long as it works, it should boot whatever is named ntrboot.firm?

sounds legit, im about to try it

Worked great!!!! I prefer the ntrboot.firm being the boot file for the cart, makes more sense.

normal b9s = boot.firm
ntrboot = ntrboot.firm

guess ill keep my ak2i in my 3ds from now on and get a good magnet for my keychain :)
 
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Cuphat

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Well then they should've worked on that more before release. People were excited due to infinite Homebrew (since it works on all versions) and unbricks, but what's so exciting about a release of a program that basically does the same thing as the DSIware exploit? We could've just done that while waiting.
Why yes, they should definitely have tried harder to provide for you a free service that suits your needs.

It's better than DSiWarehax because, besides the initial flashing (which should be possible without a 3DS, probably), the carts are re-usable and can be chucked into an envelope. I would be shocked if there weren't people selling carts with it pre-installed at some point soon. And, if you make contact with other humans in the real world, some of them may have a 3DS that you could borrow for 10 minutes, which is a much easier sell than trying to do some system transfer bullshit.

In addition to the NRTboot flasher is not also the possibility to generate its own AK2i firm and by means of decrypt9 to flash?
Unfortunately, I do not have a python understanding and therefore can not compile the firm

https://github.com/d3m3vilurr/ak2ifirm
Yes, that works fine. When ntrboot_flasher was broken for AK2i cards, I used that method successfully. You need his fork of Decrypt9 though since the current "official" D9 isn't updated for it.

Well what I read before you shouldn't even be able to boot AKAIO. But I can boot it fine on my N3DSXL but my really old 3DS (Launch 3DS) it throws me an error.
The AK2i will still work as a flashcart on a CFW 3DS, even when setup as an ntrboot cart. It won't work on a DSi/OFW 3DS, though.

The R4i Gold is one or the other, though, from what I've heard.
 
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Why yes, they should definitely have tried harder to provide for you a free service that suits your needs.

It's better than DSiWarehax because, besides the initial flashing (which should be possible without a 3DS, probably), the carts are re-usable and can be chucked into an envelope. I would be shocked if there weren't people selling carts with it pre-installed at some point soon. And, if you make contact with other humans in the real world, some of them may have a 3DS that you could borrow for 10 minutes, which is a much easier sell than trying to do some system transfer bullshit.
I meant that they should've worked more on the powersaves or a version of this that only requires a flash cart. I understand they do this for us for free, and I'm sure as hell not the one who get's to decide, but I just don't like where this has started off.
I know it'll go really far, and I think your post has made me think about it a bit more than the others. Thanks.
 

Cuphat

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I meant that they should've worked more on the powersaves or a version of this that only requires a flash cart. I understand they do this for us for free, and I'm sure as hell not the one who get's to decide, but I just don't like where this has started off.
I know it'll go really far, and I think your post has made me think about it a bit more than the others. Thanks.
Yeah, I can get how it'd be frustrating right now for someone with one console on 11.4+. Also it's worth keeping in mind that an ntrboot cart also serves essentially as a hardmod replacement, fixing any software bricks you might happen to have. It sounds like a lot of people are already using it to rescue paperweights that they tossed in a drawer years ago.
 
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luigismentor

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Hmm, I have an off-brand R4i, but it does have RTS. Here's a photo.
B6_t.jpg

Would it be usable? From what I've read, the site it came from is reputable enough, and there's no time bomb. Sure, I said I was leaving the 3DS scene, but I really miss PKHex.........
 

Quantumcat

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Hmm, I have an off-brand R4i, but it does have RTS. Here's a photo.
B6_t.jpg

Would it be usable? From what I've read, the site it came from is reputable enough, and there's no time bomb. Sure, I said I was leaving the 3DS scene, but I really miss PKHex.........
I think the website needs to be r4ids.cn
 

Cuphat

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Hmm, I have an off-brand R4i, but it does have RTS. Here's a photo.
B6_t.jpg

Would it be usable? From what I've read, the site it came from is reputable enough, and there's no time bomb. Sure, I said I was leaving the 3DS scene, but I really miss PKHex.........
Nope. It might look similar, but r4i-sdhc.com carts are not currently compatible.
 

Diego788

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my flashcard "R4i Gold 3DS (r4igold.cc)" can be flashed with a .nds file in the official page, but obviously NTRBoot Flasher gives an error when dumping the flash.. is there a possibility to make it compatible in NTRBoot Flasher in some future?
 

mariogamer

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my flashcard "R4i Gold 3DS (r4igold.cc)" can be flashed with a .nds file in the official page, but obviously NTRBoot Flasher gives an error when dumping the flash.. is there a possibility to make it compatible in NTRBoot Flasher in some future?
Maybe. There's info on it in Readme.
 

jerbear64

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sausbaus

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Having difficulties with a blue screen brick (00000400, "NAND not found error"). Attempted a hardmod downgrade on a JP New 3DS (small one) almost half a year ago and got a brick when I wrote to the NAND. Trying to restore my unmodified NAND backup didn't fix it and I figured it was done for.

I have ntrboot setup on an AK2i HW81 now. I no longer get the bootrom error while performing the exploit, but I can't seem to load any FIRMs. It'll stay on an un-lit black screen until I either pull the battery or hold the power switch. I've triple checked that all the correct files are in the right place, tried a different microSD, tried using different FIRMS, re-flashed my AK2i on two different consoles, and even went so far as to disassemble the system again to see if anything was out of place or if there was any noticeable board damage. Not sure at this point if it's a random issue with ntrboot_flasher or something with the hardware itself.

Anyone have any ideas?
 
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luigismentor

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Nope. It might look similar, but r4i-sdhc.com carts are not currently compatible.
Well, crap. Any idea when they will be? Sure, I could use the DSiware method (my brother's 3DS has CFW with a legit copy of Zelda Four Swords), but I don't want to lose my data on the Sun/Moon demo.
 

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