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.​

 

[Master Dimentio]

I just explained...
It will allow you to access godmode9, and therefore allow you to do a CTRTransfer, and therefore get your 3DS back to 9.2, and therefore you can install B9S once you are in 9.2

So even though I'm part way through another hacking process to get kernel access I can do this and it'll be fine even though where I was before hand bricked the system

 

[MysticRiku]

That really is strange. Have you tried using a different sdcard?

Sent from my SM-G950F using Tapatalk

Wow, don't I feel stupid. Changing out the sdcard did work, thank you very much!

 

[MrJason005]

So even though I'm part way through another hacking process to get kernel access I can do this and it'll be fine even though where I was before hand bricked the system

When you do a CTRTransfer, what you are essentially doing is modifying a public NAND image in order to be flashable to your 3DS. The NAND image that you will flash, is a pure virgin 9.2 NAND. Meaning that it does not have ANY hacks installed.
The reason that you need godmode9 in order to do a CTRTransfer, is because godmode9 gives you access to some files that are unique to your 3DS, so that you can make the NAND flashable to your 3DS
As you may or may not know, NANDs are unique to each console, you cannot share NANDs between 2 consoles.

 

[Master Dimentio]

When you do a CTRTransfer, what you are essentially doing is modifying a public NAND image in order to be flashable to your 3DS. The NAND image that you will flash, is a pure virgin 9.2 NAND. Meaning that it does not have ANY hacks installed.
The reason that you need godmode9 in order to do a CTRTransfer, is because godmode9 gives you access to some files that are unique to your 3DS, so that you can make the NAND flashable to your 3DS
As you may or may not know, NANDs are unique to each console, you cannot share NANDs between 2 consoles.

Technically speaking is this a way to completely virgin ize a system? So basically by doing this you're able to hack it thoroughly

 

[MrJason005]

Technically speaking is this a way to completely virgin ize a system? So basically by doing this you're able to hack it thoroughly

Yes, we can virgin ize a system with CTRTransfer

 

[Lumince]

Has anyone ordered from here? http://3ds-flashcard.com/home/23-wood-r4i-gold-3ds.html Id rather not order from hong kong and I'm just wanting to get opinions before I buy one.

 

[jerbear64]

Has anyone ordered from here? http://3ds-flashcard.com/home/23-wood-r4i-gold-3ds.html Id rather not order from hong kong and I'm just wanting to get opinions before I buy one.

nds-card is reputable (in fact they're a GBATemp sponsor)- it's also cheaper than 3ds-flashcart.com. http://www.nds-card.com/ProShow.asp?ProID=149

 

[Lumince]

nds-card is reputable (in fact they're a GBATemp sponsor)- it's also cheaper than 3ds-flashcart.com. http://www.nds-card.com/ProShow.asp?ProID=149

Yeaaa but 3ds flashcard ships from usa. So im basically paying for it to be here way sooner.... But I suppose I'll take it safe and buy from nds

 

[Alex S]

Damn. Now i have to buy an ak2i because dstwo support was skipped over in favor of ak2i.

 

[astronautlevel]

Damn. Now i have to buy an ak2i because dstwo support was skipped over in favor of ak2i.

It was always known the AK2i would be supported, rumors that the DSTwo would be supported were nothing more than, well, rumors.

 

[RazorX2014]

anyone know if this will work with an acekard 2 (ver 2.1)? because i have one of those lying around

 

[astronautlevel]

anyone know if this will work with an acekard 2 (ver 2.1)? because i have one of those lying around

No, that's not a DSi card and doesn't have a rewriteable NAND.

 

[RazorX2014]

No, that's not a DSi card and doesn't have a rewriteable NAND.

ok thanks

 

[joeh1974]

I still have an old Acekard 2i that was purchased a few years ago. How can I tell if it is a HW44 or HW81?

 

[Wuigi]

@joeh1974 It says so on the ntrboot flasher start screnn abd both are supported anyways.

 

[dahacker2017]

will this work with

• R4 3DS Upgrade SDHC Revolution for 3DS DSI/XL/LL DSL DS Gold Pro Real Time Save Flashcard? http://www.r4isdhc.com/
  
  if not plz add it to the support list somehow

 

[reshiramiri]

cant wait till r4 dual core is supported ive been waiting for this a while and im relieved i dont have to buy a whole new flashcard

 

[dpad_5678]

will this work with

• R4 3DS Upgrade SDHC Revolution for 3DS DSI/XL/LL DSL DS Gold Pro Real Time Save Flashcard? http://www.r4isdhc.com/
  
  if not plz add it to the support list somehow

Anyone can add it to the supported cart list. Doesn't mean it'll actually work lmao

 

[nl255]

I still have an old Acekard 2i that was purchased a few years ago. How can I tell if it is a HW44 or HW81?

@joeh1974 It says so on the ntrboot flasher start screnn abd both are supported anyways.

Yes, both are supported but Ak2i support is (partially?) broken on the release version. This version is reported to work with the Ak2i https://www.mediafire.com/file/clomdkas66nxbg8/ntrboot_flasher.firm. (from post http://gbatemp.net/threads/ntrboot-is-out.480586/page-9#post-7508558)

 

[zoogie]

boot9strap-1.2.zip

no
https://github.com/SciresM/boot9strap/releases/download/1.2/boot9strap-1.2-ntr.zip