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.
 
Last edited by Deleted member 381889,

gamesquest1

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How do you use acekard 2i if it doesn't take higher firmwares?

I do have a b9s new 3ds on 11.2
the b9s flasher can flash any of the compatible cards on any firmware if your already running b9s(just use the b9sflasher payload to program the flashcard), if your using the ntr flasher you need to be able to boot the card, so if your on stock FW, your limted to nds cards that are bootable on your system already

Edit: Ninja'd :D
 
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ShadowStitch

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Any way to tell which DSTT will work before trying? Can you tell from the pictures of the PCB?
On the NTRBoot page they have a listing of which DSTT chipsets are purported to work with the program.
You can either run the DSTTFlashwriter (or fakechecker) to see what chipset is on it, or just crack the card open and look at the PCB. The chip should be labeled.
Mine has the SST39LF/VF400A chip, which is listed among the working chipsets but neither the 3ds boot version nor the NDS flashcard version worked for me. Some other people earlier in the thread reported success with other chipsets.
If it fails, you can probably use the DSTTflashwriter to recover from it, provided you have another cart to run the .nds file.
 
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ataraxis

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Hi all. I Have successfully installed the cfw to my o3dsxl using R4i 3DS Gold RTS. Took me 4 hours though for a 10 mins job.

I had problem booting up using the flash kart. Followed Boot sequence and was sure magnet is at the right place. The blue light will light up for few seconds and go back to dimmed and off. I repeated the steps for few hours and almost given up.

My first thought was I must have fried the flash cart but how could that be? Then finally decided to replace all the files in SD card and it finally worked. I believe some of the files must have been corrupted as I dragged them out from zip file straight to SD.

Few questions need your help answering.

1. While flashing the flash cart. Would the flash cart still be flashed if I selected the wrong flash cart from the menu? E.g. I selected ak2i instead of R4. Will it still flash? Will it brick the flash kart?

2. When I thought my cart was fried. I wanted to flash it back to original settings and rerun the ntrcardhax but then only I realized I can't do that since my 3DS is still using Ori firmware.

In this case what should I do? How can I flash the cart back to Ori settings? Am I able to do that?

3. Since the cfw is already installed. Do I still need the flash kart? Can I flash it back to original settings? What's the benefit of keeping it ntrbootable?

Thanks :)
 

Cuphat

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Hi all. I Have successfully installed the cfw to my o3dsxl using R4i 3DS Gold RTS. Took me 4 hours though for a 10 mins job.

I had problem booting up using the flash kart. Followed Boot sequence and was sure magnet is at the right place. The blue light will light up for few seconds and go back to dimmed and off. I repeated the steps for few hours and almost given up.

My first thought was I must have fried the flash cart but how could that be? Then finally decided to replace all the files in SD card and it finally worked. I believe some of the files must have been corrupted as I dragged them out from zip file straight to SD.

Few questions need your help answering.

1. While flashing the flash cart. Would the flash cart still be flashed if I selected the wrong flash cart from the menu? E.g. I selected ak2i instead of R4. Will it still flash? Will it brick the flash kart?

2. When I thought my cart was fried. I wanted to flash it back to original settings and rerun the ntrcardhax but then only I realized I can't do that since my 3DS is still using Ori firmware.

In this case what should I do? How can I flash the cart back to Ori settings? Am I able to do that?

3. Since the cfw is already installed. Do I still need the flash kart? Can I flash it back to original settings? What's the benefit of keeping it ntrbootable?

Thanks :)

If the blue light comes on for a second and then turns off, this means that boot.firm was not found on your 3DS SD card (or CTRNAND). It's how boot9strap (and A9LH before it) handle not finding something to actually boot.

Keeping it as an ntrboot cart is only useful if you want to use to on more 3DSes, or if you somehow manage to brick your 3DS. Returning it to normal is of course needed if you plan to use it for its original purpose - to play DS games. So, if that is something you are interested in, restore it.

Restoration instructions on this page, under Section V - Removing ntrboot.
 

Xerneea

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I have a r4i rts 3ds and every time I select the flashcart it says "please eject and remove SDCARD then reinsert cartridge" I do this and then I get "flashcard setup failed" no matter what I do. Is the flashcard a fake or am i doing something wrong? (I got it from sky3dsitaliacom and I know the recommended is nds-cardcom)
 

MrJason005

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I have a r4i rts 3ds and every time I select the flashcart it says "please eject and remove SDCARD then reinsert cartridge" I do this and then I get "flashcard setup failed" no matter what I do. Is the flashcard a fake or am i doing something wrong? (I got it from sky3dsitaliacom and I know the recommended is nds-cardcom)
  1. How are you flashing it? With an unhacked 3DS or a DS Lite
  2. Are you using the correct .nds file for your flashing method?
 

Xerneea

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If you're using the DSi flasher then you shouldn't run into this "remove the SD card" business. Double check you are using the correct .NDS flasher.
The nds file I'm using is the "ak2i_ntrcardhax_flasher_dsi.nds" it's the only one the guide says to use.
EDIT: I solved it, version 3 was the problem version 2.3 worked just fine. Thanks for the help anyway :)
 
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Ramses

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i'm going to ask a very stupid question:

is there going to be more support in the future for more DSTT chips or is this it?
 

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