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.​

 

[MrJason005]

Not working with that R4 SDHC Gold Pro 2017 r4isdhc.com... Any ideas about how to fix it? The problem is "flashcart setup failed". I should exchange it for an Acekard or wait to the support?

Thank you guys!

View attachment 103476

What flasher are you using? Are you flashing it on a 3DS or a DS?

 

[alphaplayer]

What flasher are you using? Are you flashing it on a 3DS or a DS?

I'm trying to flash in a o3DS 11.5. I'm about to try in a 2DS XL in 11.4. I could try to ask my gf for a DSiXL to try out if it's flashing OK

--------------------- MERGED ---------------------------

I can't flash from the 2DS XL neither... Maybe I should contact the seller and exchange it for an Acekard... Let's send him a message to ask about the model of that Acekard. Thank you anyways!

 

[MrJason005]

I'm trying to flash in a o3DS 11.5. I'm about to try in a 2DS XL in 11.4. I could try to ask my gf for a DSiXL to try out if it's flashing OK

Have you read the post I made in another thread?

The ONLY flashers which work right now are

1. ntrboot_flasher which only works with boot9strap 3DSes
2. figgyc's fork of ak2i_ntrcardhax_flasher which will only work on a DS Lite or old DS. It does not work on an unhacked 3DS.

There's also an experimental flasher for unhacked 3DSes, that seems to work fine. I can link it if you want

 

[alphaplayer]

There's also an experimental flasher for unhacked 3DSes, that seems to work fine. I can link it if you want

I saw your message today in the board before posting, yep, but in that 3DS guide page says it's supported and I checked all the versions of the Github page to see if something works but not working neither... Can you link me that experimental flasher?

 

[MrJason005]

I saw your message today in the board before posting, yep, but in that 3DS guide page says it's supported and I checked all the versions of the Github page to see if something works but not working neither... Can you link me that experimental flasher?

3ds.guide is outdated right now because this is all really new and we aren't sure of what works and what doesn't

Here's the experimental flasher (Can't promise a brick-free experience, so proceed at your own)

 

[alphaplayer]

3ds.guide is outdated right now because this is all really new and we aren't sure of what works and what doesn't

Here's the experimental flasher (Can't promise a brick-free experience, so proceed at your own)

It worked dude! I flashed that with the R4iSDHC method and I think it flashed it all (it printed that FIRM 1, FIRM 2 lines with the percentages so I'll continue with the process). What's the change between one and another?

You should do a git commit and git push

 

[MrJason005]

It worked dude! I flashed that with the R4iSDHC method and I think it flashed it all (it printed that FIRM 1, FIRM 2 lines with the percentages so I'll continue with the process). What's the change between one and another?

You should do a git commit and git push

This is d3m3's build, not mine. He made the original ak2i_ntrcardhax_flasher

Try doing 3ds.guide now from here

 

[alphaplayer]

This is d3m3's build, not mine. He made the original ak2i_ntrcardhax_flasher

Try doing 3ds.guide now from here

Ok, now I have a couple of seconds for saying YOU DUDES ARE AWESOME. It totally worked. I'm now in GM9 doing the nand backup. Where can I send you a couple of $ to buy you some beers? You all guys deserve that!

 

[MrJason005]

Ok, now I have a couple of seconds for saying YOU DUDES ARE AWESOME. It totally worked. I'm now in GM9 doing the nand backup. Where can I send you a couple of $ to buy you some beers? You all guys deserve that!

The fact that the flasher worked for you is a good sign, it's more evidence that the flasher is stable

If I wanted something, that'd be it really

 

[none888]

can confirm used my 2015 sdhc dual core and dsi on the experimental flasher

and on that note anybody have a backup of that card

 

[adilucky3]

The fact that the flasher worked for you is a good sign, it's more evidence that the flasher is stable

If I wanted something, that'd be it really

Are supercard dstwo support is starting? Because sdhc dualcore is done

 

[MrJason005]

Are supercard dstwo support is starting? Because sdhc dualcore is done

Support for the Supercard DSTWO is in progress.

 

[Eliot15]

How to compile to latest commit? Is there a guide?

 

[KytuzuEX]

Lol, someone erased my two posts (from some time ago) because I asked if that "certain flashcard" could work because it had a similar name. Oh, boy... many people attacked me here just for the obvious answer.

I was just revisiting, searching for my posts since today, that I saw on 3ds.guide ntrboot, that my flashcard got compatible.

Apparently, I was a nuisance, months later, now it is on the list. (R4iSDHC GOLD PRO 2017)

 

[MrJason005]

Lol, someone erased my two posts (from some time ago) because I asked if that "certain flashcard" could work because it had a similar name. Oh, boy... many people attacked me here just for the obvious answer.

I was just revisiting, searching for my posts since today, that I saw on 3ds.guide ntrboot, that my flashcard got compatible.

Apparently, I was a nuisance, months later, now it is on the list. (R4iSDHC GOLD PRO 2017)

Which flashcart was it similar to?

 

[Nartaak]

I'm sorry if my post has value to the thread itself but i just wanted to tell you guys that this is fucking awesome. I just installed luma3ds via ntrbootb to my n3dsxl and it worked flawless. Thanks to all the guys that are making this possible, even for noobs like me

 

[Newtwarrior]

Hey guys.
The other thread seems dead so I'm going to ask here:
I updated a couple 3DS using Action Replay DSI with 0 issues.
Though there are some that can't be read? Like some DS won't recognize the cart at all, I assume the DS needs to be able to read the cart to use the exploit?

 

[TheCyberQuake]

Lol, someone erased my two posts (from some time ago) because I asked if that "certain flashcard" could work because it had a similar name. Oh, boy... many people attacked me here just for the obvious answer.

I was just revisiting, searching for my posts since today, that I saw on 3ds.guide ntrboot, that my flashcard got compatible.

Apparently, I was a nuisance, months later, now it is on the list. (R4iSDHC GOLD PRO 2017)

It wasnt just because you asked, it was because multiple people kept asking about the same card. It gets annoying when the same card gets asked about 30+ times, even the question had already been answered the other 30+ times.

 

[Narublacking]

Ok, now I have a couple of seconds for saying YOU DUDES ARE AWESOME. It totally worked. I'm now in GM9 doing the nand backup. Where can I send you a couple of $ to buy you some beers? You all guys deserve that!

How did you do it my 3ds does not modify it

 

[Zaphod77]

even even smarter ones will have a slide switch on their card.

I called it.

I am being sent a DS flashcart with a switch to activate ntrboot mode to review.

I know of at least 2 teams that are getting in on the act. One already has a product out. It is the one i will be reviewing.

We can expect more teams to release similar flashcarts in the future.