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.​

 

[leerpsp]

Did you not read OP? Or any of the replies?

yes i have and can not find anything i can not even get ntrboot to even boot on my new 3ds xl just black screen blue light i have all the files on the sd card that needs to be there but will not boot i just need to boot it to restore my nand.

 

[TheCyberQuake]

yes i have and can not find anything i can not even get ntrboot to even boot on my new 3ds xl just black screen blue light i have all the files on the sd card that needs to be there but will not boot i just need to boot it to restore my nand.

Iirc you can't not godmode9 directly right now because screen init is broken. You'll have to use ntrboot to b9s and Luma then chainload godmode9. If you can't do that then a new release for godmode9 seems to be coming very soon with fixes for that and added features.

 

[flow349]

Iirc you can't not godmode9 directly right now because screen init is broken. You'll have to use ntrboot to b9s and Luma then chainload godmode9. If you can't do that then a new release for godmode9 seems to be coming very soon with fixes for that and added features.

that wouldnt be the problem for me and even for him it would be the best way to go. but we cant install b9s because we cant boot b9sinstaller via ntrboot.

 

[TheCyberQuake]

that wouldnt be the problem for me and even for him it would be the best way to go. but we cant install b9s because we cant boot b9sinstaller via ntrboot.

Are you sure the magnet being used is strong enough? And did you try reflashing the flashcard to ensure ntrboot flashed properly

 

[leerpsp]

Are you sure the magnet being used is strong enough? And did you try reflashing the flashcard to ensure ntrboot flashed properly

if i hold it in my hand 10" from the microwave it will jump out of my hand and stick to it so i think it is but its a ball magnet its all i got.

 

[flow349]

Are you sure the magnet being used is strong enough? And did you try reflashing the flashcard to ensure ntrboot flashed properly

i used a speaker magnet from an old 3ds xl an it worked on my new 3ds xl but not on my bricked new 3ds. i flashed the acekard2i twice and it didnt work, my r4 too. i also replaced all files on my sd and formatted my sd .

 

[leerpsp]

i used a speaker magnet from an old 3ds xl an it worked on my new 3ds xl. i flashed the acekard2i twice and it didnt work, my r4 too. i also replaced all files on my sd and formatted my sd .

see that is what is going on with me it will not boot to my new 3ds xl at all but it will work on my 2ds only other system i can test.

 

[Spore2]

Are all acekard 2i clones compatible?

 

[Firewolf]

since this runs off the flashcard (not the sd card) itself, technically this could be performed with the Sky3DS as well, right?

 

[annson24]

since this runs off the flashcard (not the sd card) itself, technically this could be performed with the Sky3DS as well, right?

Wrong.

Sent from my SM-G950F using Tapatalk

 

[zoogie]

since this runs off the flashcard (not the sd card) itself, technically this could be performed with the Sky3DS as well, right?

That card's FPGA is programmed to work as a 3ds card so it would be up to sky3ds team to make it an ntrcard.
Don't think they're interested.

 

[Aliceloveszubats]

so the dsone sdhc will never work? shame. only one i have;-;

 

[Jayro]

Just used NTRBOOT to mod my friend's 3DS today, and they paid me $50.

 

[Firewolf]

so the dsone sdhc will never work? shame. only one i have;-;

sadly not, r4 sdhc has a ROM which cannot be written to, which is required for the exploit to work

 

[spkuja]

It would be nice if a tool could be created to confirm if a flash to the DS card was successful or not

 

[Spore2]

Tested the Galaxy Eagle i myself. I'm not sure if it really is an Acekard2i clone because it was not detected by ntrboot_flasher. Upon checking its website I found out that it does not have support for flashing the card firmware. Anyone else try this card?

 

[Hihomaster]

do you know if supercard dstwo can be supported?

 

[flow349]

see that is what is going on with me it will not boot to my new 3ds xl at all but it will work on my 2ds only other system i can test.

i used a speaker magnet from an old 3ds xl an it worked on my new 3ds xl but not on my bricked new 3ds. i flashed the acekard2i twice and it didnt work, my r4 too. i also replaced all files on my sd and formatted my sd .

did anyone have any other ideas why we cant unbrick using ntrboot?

 

[leerpsp]

did anyone have any other ideas why we cant unbrick using ntrboot?

I don't think they do as of right now because there is still no helpful reply on my post I made.

 

[flow349]

I don't think they do as of right now because there is still no helpful reply on my post I made.

that sucks...