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.​

 

[linuxares]

Could the r4i ds happybox work?it has a nand

If you put it in and run the ntrboot flasher and see what it reports as? It might be a clone.

 

[Snooli]

A few days really? Is this confirmed?

Sent from my HTC U11 using Tapatalk

I can't guarantee the time, but it is actively being worked on...

 

[gjac1]

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

I ordered this one from Gearbest http://www.gearbest.com/game-accessories/pp_630470.html
http://www.gearbest.com/game-accessories/pp_630470.html
Picture shows its a Dual-Core and i order from Gearbest all the time, shipping to the UK so i trust them

 

[yardie]

I ordered this one from Gearbest http://www.gearbest.com/game-accessories/pp_630470.html
Picture shows its a Dual-Core and i order from Gearbest all the time, shipping to the UK so i trust them

since when was the dual core supported?

 

[gjac1]

since when was the dual core supported?

Its is being worked on now, might be ready in a few days, which is still 6 days before my card is due to arrive lol

 

[Dave_Chad]

I've ordered an R4i Gold but if my dual core can be supported earlier I'll be happy. Got an 11.5 system to test it on.

Sent from my HTC U11 using Tapatalk

 

[Deleted User]

Does it unbrick a New 3DS that entered sleep mode on 2.1.0? I kinda wanna try.

 

[MichiS97]

Does it unbrick a New 3DS that entered sleep mode on 2.1.0? I kinda wanna try.

I don't think so as that seems to be a MCU brick, not a NAND brick

 

[Deleted User]

I don't think so as that seems to be a MCU brick, not a NAND brick

Oh, okay. I saw a thread of it somewhere, where a person said left a 3DS in sleep mode after downgrade, and it somehow threw an error screen when reaching to home menu. I thought it just corrupts NAND related files or whatever.

Edit: Found it. https://gbatemp.net/threads/n3ds-possibly-bricked-by-closing-lid-while-on-wifi-on-2-1.419184/

 

[Skur3byk]

I have bug from nds-card yesterday pay with credit card but I have not received any confirmation e-mail and when I enter my order nimber the site tell me that he got not tracking informations(i have pay for a dhl shipping). Have try to contact them earlier no answer.

How much Time they tape normally to send you the confirmation ?

Credit card? Ok...
Anyway, i guess if you check the "payment sent" box and update it, they will reach to you faster, i ordered twice and got all the mails done same day (except for shipping number, that one comes next day)

 

[Tigrokai]

Oh, okay. I saw a thread of it somewhere, where a person said left a 3DS in sleep mode after downgrade, and it somehow threw an error screen when reaching to home menu. I thought it just corrupts NAND related files or whatever.

Edit: Found it. https://gbatemp.net/threads/n3ds-possibly-bricked-by-closing-lid-while-on-wifi-on-2-1.419184/

oh hey, its me!
Seems like that the 2.1 sleep mode brick isn't fixable by this method, I decided to see if I could try, to no success. Got b9s installed and everything, then did a 9.2 ctrtransfer, just to a consistent "failed to mount ctrnand" from luma. Unless I'm doing something wrong, I guess it's an unrecoverable brick

 

[lone_wolf323]

oh hey, its me!
Seems like that the 2.1 sleep mode brick isn't fixable by this method, I decided to see if I could try, to no success. Got b9s installed and everything, then did a 9.2 ctrtransfer, just to a consistent "failed to mount ctrnand" from luma. Unless I'm doing something wrong, I guess it's an unrecoverable brick

No. I think from what ive read. a MCU brick ends up frying the capacitors of the 3ds when they got overloaded during sleep mode on the lower fireware.

 

[Tigrokai]

No. I think from what ive read. a MCU brick ends up frying the capacitors of the 3ds when they got overloaded during sleep mode on the lower fireware.

that might just be the case, yeah, as the battery seems to have an issue (before i stopped using it nearly 2 years ago, it didnt have this) where it's super bloated and will fall out if the backplate isnt put in, which makes me think its a ticking time bomb or something. i dont really have any idea how that happened, but if the caps got fried then that would make a lot of sense as to why it's now like that

 

[Majickhat55]

oh hey, its me!
Seems like that the 2.1 sleep mode brick isn't fixable by this method, I decided to see if I could try, to no success. Got b9s installed and everything, then did a 9.2 ctrtransfer, just to a consistent "failed to mount ctrnand" from luma. Unless I'm doing something wrong, I guess it's an unrecoverable brick

I'm 99% sure if you had an MCU brick your console wouldn't even boot since it's essentially "stuck" on a bad LED command loop. Also, that error is pretty run of the mill. Check the troubleshooting section of the guide my friend,you're basically just supposed to ignore it until you're done completely. You most certainly do NOT have an MCU brick.

 

[failzers]

oh hey, its me!
Seems like that the 2.1 sleep mode brick isn't fixable by this method, I decided to see if I could try, to no success. Got b9s installed and everything, then did a 9.2 ctrtransfer, just to a consistent "failed to mount ctrnand" from luma. Unless I'm doing something wrong, I guess it's an unrecoverable brick

you didn't put it to 9.2, that error only shows when firmware is on 2.1

 

[Tigrokai]

you didn't put it to 9.2, that error only shows when firmware is on 2.1

i did a 9.2 ctrtransfer, what else am i supposed to do then?

 

[Majickhat55]

i did a 9.2 ctrtransfer, what else am i supposed to do then?

According the guide after installing B9S through Rxsa on 2.1, you need to do the transfer that you did (or restore a NAND backup, much better option since it won't overwrite B9S).

Also, the guide says and I quote "If you get an error, ignore it press start and continue with the guide."

You should be on this section here https://3ds.guide/finalizing-setup

 

[Tigrokai]

According the guide after installing B9S through Rxsa on 2.1, you need to do the transfer that you did (or restore a NAND backup, much better option since it won't overwrite B9S).

Also, the guide says and I quote "If you get an error, ignore it press start and continue with the guide."

You should be on this section here https://3ds.guide/finalizing-setup

if i could just ignore it and press start to boot, i wouldnt be troubleshooting the error, but alas, that isnt the case

 

[Majickhat55]

if i could just ignore it and press start to boot, i wouldnt be troubleshooting the error, but alas, that isnt the case

Like I said, restore your NAND backup. If you don't have one use a CTRNAND transfer from 3DOWN to go to 11.2 and continue the guide. Don't say "I've already done a CTRNAND transfer to 9.2 and it doesn't work" if you refuse to try it again. It's the nature of these things to not work 100% of the time. I'm just trying to help you.

If you would take a minute to google, you would see that the "failed to mount CTRNAND" error from Luma is extremely common on 2.1, and how it's fixed. Which I might add is usually ignoring it, pressing start, then performing a CTRNAND transfer to 9.2 or restoring your NAND backup. In which case the error goes away.

 

[Tigrokai]

Like I said, restore your NAND backup. If you don't have one use a CTRNAND transfer from 3DOWN to go to 11.2 and continue the guide. Don't say "I've already done a CTRNAND transfer to 9.2 and it doesn't work" if you refuse to try it again. It's the nature of these things to not work 100% of the time. I'm just trying to help you.

i've attempted 3 different ctrtransfers, i'm not as incompetent as you're making me out to be. i wouldn't be doing a ctrtransfer if i had a nand backup, but again, i don't.