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.​

 

[Snooli]

Does the latest commit contain support for DSTwo? (Even if you can't return it to its original state)

No, https://github.com/kitling/flashcart_core/tree/master/devices does not include DStwo as of today.

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Does anyone know what the name of the company is when you buy from nds-card? My bank put a hold on a transaction from china because well, obvious reasons, I'm not in china.

I did try and buy a card from nds-card but I also declined the purchase to my bank because I didn't trust the name of the company that they said it was. It was something like "VIP" or something. Also, the price was a tad more than what I expected too. Maybe taxes?

Suspicious, did you pay using western union or paypal?
Could the markup be shipping? Only basic china post without tracking is free.

 

[Xeonhawk]

So as of right now, is the dual core working but you just can't revert?

 

[Agent Moose]

Suspicious, did you pay using western union or paypal?
Could the markup be shipping? Only basic china post without tracking is free.

I used my debit card. I'll go through paypal next time, I'm still suspicious about it though. I want the Acekard 2i and I don't think anyone else is selling it other than them. And honestly, I'm even willing to pay a few bucks more if I can get on in the US from someone on here.

 

[Snooli]

I used my debit card. I'll go through paypal next time, I'm still suspicious about it though. I want the Acekard 2i and I don't think anyone else is selling it other than them. And honestly, I'm even willing to pay a few bucks more if I can get on in the US from someone on here.

I understand that you want the AK2i, but you might want to consider getting the R4i SDHC Dual-core instead. It is half the price, much more available, propably shippable from US and likely to be confirmed working this week.

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So as of right now, is the dual core working but you just can't revert?

I don't know. @Kitlith states it as incomplete and there are files for it in flashcart_core. We need someone with one to compile from source and test it.

 

[laharl22]

it is compilable the latest commit with r4 sdhc support ?

 

[TomDing]

I believe what d3m3vilurr was saying is that the nds version of the flasher was updated to also support the r4i gold (it only did ak2i before, this means you only need a regular DS now instead of a CFW'd 3ds for both ak2i and r4i Gold). He wasn't saying it was updated to support more cards than what have already been released/are known for the current ntrboot_flasher.

Does anyone know if there is a tutorial of doing preflashing using NDSL? I do not quite understand how it works since you cant insert a micro sd card into nds.

 

[Snooli]

Does anyone know if there is a tutorial of doing preflashing using NDSL? I do not quite understand how it works since you cant insert a micro sd card into nds.

You run the .nds for your card on it. That should be all. It works like normal DSi flashcart updates that changed the game underneath which it hid. Also don't powerof your NDSL, as it holds the backup of your card and the flash tool in RAM.

 

[TomDing]

You run the .nds for your card on it. That should be all. It works like normal DSi flashcart updates that changed the game underneath which it hid. Also don't powerof your NDSL, as it holds the backup of your card and the flash tool in RAM.

I was wondering where does the dump go and how do I restore my card. I know NDS only has 4MB of ram and I wasn't sure that is big enough to hold the default rom of flashcard.

Thanks for the info. Now I understand.

 

[Agent Moose]

I understand that you want the AK2i, but you might want to consider getting the R4i SDHC Dual-core instead. It is half the price, much more available, propably shippable from US and likely to be confirmed working this week.

I don't know about the R4I, but I read somewhere that with the AK2i you can still use it like normal even with the NTRBoot flashed on to it. I'm pretty sure that's what I read...

 

[jerbear64]

I don't know about the R4I, but I read somewhere that with the AK2i you can still use it like normal even with the NTRBoot flashed on to it. I'm pretty sure that's what I read...

This is correct, but only on the DS Phat/Lite and CFW 3DS.

 

[YoloSwagDux]

Do I buy new flashcart or will r4i rts 3ds sdhc be compatible

 

[linuxares]

Hm, Shame its not accessible for people like me who don't have a second modded cfw 3ds on hand.

wait for a new exploit. Things seem to be happning soonish
https://twitter.com/MrNbaYoh/status/896161313872908288

 

[Snooli]

This is correct, but only on the DS Phat/Lite and CFW 3DS.

Sort of. It can actually be used normaly. Unfortunately, there were no updates for along time. That's why you need CFW to use AK2i on 3DS.

 

[jerbear64]

Sort of. It can actually be used normaly. Unfortunately, there were no updates for along time. That's why you need CFW to use AK2i on 3DS.

I'm saying with ntrboot flashed on it.

My DSi is downgraded to 1.4 and sees no cart inserted with ntrboot on my Acekard, but it works fine in my CFW 3DS as a flashcart. A downgraded 3DS wouldn't see the Acekard either.

 

[ganons]

So can a DS Lite be used to flash ntrboot and then use it on a 2DS XL?

 

[Snooli]

So can a DS Lite be used to flash ntrboot and then use it on a 2DS XL?

yes

 

[Agent Moose]

Sort of. It can actually be used normaly. Unfortunately, there were no updates for along time. That's why you need CFW to use AK2i on 3DS.

That's fine with me. I already have a hacked 3DS, so I'm all for it. Only reason why I am getting the card is so that if I get a new 3DS, and so I can help my friends hack theirs easily.

 

[Snooli]

That's fine with me. I already have a hacked 3DS, so I'm all for it. Only reason why I am getting the card is so that if I get a new 3DS, and so I can help my friends hack theirs easily.

Then you might be better off with a $10 card...

 

[joex11]

Would anyone know if any of these are the listed dual core?

http://www.gearbest.com/game-accessories/pp_630470.html

http://www.r4wood.com/products/R4-SDHC-Dual-Core-for-3DS-XL-LL-3DS-2DS-DSi.html

Thanks

 

[jimmyj]

Could the r4i ds happybox work?it has a nand