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,

daq

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Ive just followed 3ds.guide and have succesfully got things working with ntrboot and an r4i gold rts card on my new 2ds xl.

Just wondering under finalizing setup page- https://3ds.guide/finalizing-setup if i actually need to do these two final steps , or if thats just put there to let people know how to do it if needed later?
"You can now use Luma3DS Updater to update your Luma3DS to the latest version just by opening it and pressing (A)."

and this step as well

"You can now hold (Start) + (Select) + (X) on boot to dump the ARM11 bootrom (boot11.bin), the ARM9 bootrom (boot9.bin), and your console unique OTP (OTP.bin) to the /boot9strap/ folder on your SD card (note that this will not have any kind of prompt or message)."

From following the guide I assume that luma CFW is now currently installed on the system memory of my 3ds (which i think is called ctrnand???), but if i update luma it only updates the sd card version (which i think is called sysnand???)? Meaning if i update then I need to reinstall it to system memory again?? Or it doesnt matter?

Also, if I wanted to change sd card in the future (e.g upgrade from my current 32gb to a larger 128gb card), is there anything special i need to do, or do i simply just copy and paste the files on my current sd card over to a new one?
 
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busmanl30

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Ive just followed 3ds.guide and have succesfully got things working with ntrboot and an r4i gold rts card on my new 2ds xl.

Just wondering under finalizing setup page- https://3ds.guide/finalizing-setup if i actually need to do these two final steps , or if thats just put there to let people know how to do it if needed later?
"You can now use Luma3DS Updater to update your Luma3DS to the latest version just by opening it and pressing (A)."

and this step as well

"You can now hold (Start) + (Select) + (X) on boot to dump the ARM11 bootrom (boot11.bin), the ARM9 bootrom (boot9.bin), and your console unique OTP (OTP.bin) to the /boot9strap/ folder on your SD card (note that this will not have any kind of prompt or message)."

From following the guide I assume that luma CFW is now currently installed on the system memory of my 3ds (which i think is ctrnand?), but if i update luma it only updates the sd card version (which is sysnand?)? Meaning if i update then I need to reinstall it to system memory (ntrnand)?

Also, if I wanted to change sd card in the future (e.g upgrade from my current 32gb to a larger 128gb card), is there anything special i need to do, or do i simply just copy and paste the files on my current sd card over to a new one?
U can copy and paste it's that simple
 

Sleet

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Good news for those living in US.
http://www.modchipsdirect.com/r4i-3ds-r4ds-wood.html

It is about $5 more than nds-card (bc shipping), but they ship inside the US so you get your card much faster and no chance of customs snagging it.
dsflashcart.com has them cheaper although they seem to not ship from the US sometimes, I suspect they drop-ship when they have no stock.

Tech3ds.com is US and has them now as well. they aren't so well known yet but they're recommended on the flashcarts subreddit.

edit: on a side note these are the only shops I know of that ship from NA. Some Canadian shops removed theirs early this year
 
Last edited by Sleet,
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Justin20020

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Hey guys, my R4 Gold RTS came today but it doesn't fit in my n3ds xl card slot. It seems, that my card slot is too big for it. I flashed ntrboothax when I hold pressed the flashcard in the 3ds. Is there a fix to let it in the card slot somehow?
 

RustInPeace

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Hey guys, my R4 Gold RTS came today but it doesn't fit in my n3ds xl card slot. It seems, that my card slot is too big for it. I flashed ntrboothax when I hold pressed the flashcard in the 3ds. Is there a fix to let it in the card slot somehow?

Have you tried it with the backplate thing taken off? It should fit with that removed.
 

RustInPeace

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nope, it doesn't work

How about following this?

Just saw a video which shows you how to use AR with new 3DS/2DS without modifying it. All you got to do is make the system think a game is inserted, can be done by either using a flat object to click the back spring (what was done in the video) or insert a game and then carefully remove it by just pulling it out (what I tried doing (with my old 3ds xl. Dunno if its possible with a new one tho), and then shove the AR into the system and it should be accessible.
 
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dawwwz

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hey i want do this on my 3ds but i first want to log off nnid so my games and so on will be on another 3ds what should i do??? system format maybe???
 

Quantumcat

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hey i want do this on my 3ds but i first want to log off nnid so my games and so on will be on another 3ds what should i do??? system format maybe???
If you want to move games to another console you have to do a system transfer. Just logging out and attempting to sign in to the other console won't work.
 

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