How to unbrick a 3ds? (Ntrboot)

Discussion in '3DS - Flashcards & Custom Firmwares' started by gunsnluises33, Aug 13, 2017.

  1. gunsnluises33
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    gunsnluises33 Newbie

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    Hi!
    Last month I bricked my 3ds, but I saw this new method

    When I try to power it, nothing happens, no led, no blue screen, just nothing happens...
    Can I try this method?
    should I try to lauch 3ds with my acekard 2i (with previous installation)?
     
  2. Hayato213

    Hayato213 GBAtemp Regular

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    You need another System that has Custom Firmware on it to create NTRboot Flash File to use on target system, the one that is bricked right now.
     
  3. gunsnluises33
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    gunsnluises33 Newbie

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    But could I use a ctrtransfer from the flashcard?
     
  4. Redferne

    Redferne GBAtemp Advanced Fan

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  5. Platinum Lucario

    Platinum Lucario GBAtemp Advanced Fan

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    Either the 3DS's battery has run out, or your 3DS system has an MCU brick (which can happen when closing the lid on a New 3DS while on firmware older than 9.0, during the days of installing A9LH).

    If you were unfortunate enough to cause an MCU brick, then NTRBootHax is not going to help you, since the system can't even power on. An MCU brick is when the System-on-Chip has been damaged by too high voltages. When that happens, there's nothing you can do to fix the 3DS system. But you can take off the NAND chip, so that the data can be extracted through a hard mod.
     
    Last edited by Platinum Lucario, Aug 13, 2017
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  6. Hyura

    Hyura GBAtemp Fan

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    What about a 3DS that had a wrong firmware flashed? Can I recover it using this method?
     
  7. AnalogMan

    AnalogMan ultraSuMoFramework Dev

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    Yes, a CTRNAND image of the right type using Decrypt9 or GodMode9 would revive it.
     
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  8. Hyura

    Hyura GBAtemp Fan

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    That is great to hear! I've been away for a while, this is amazing news.

    I'll look for a tutorial on how to do it. Thanks!
     
  9. Ramses

    Ramses Advanced Member

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    okay, I had this happen to my n3DS XL sometime ago, and I was wondering using the NTRBoot will be a cheep and/or more continent way to unbricking my system or do I need to hardmod it?
     
  10. squall14716

    squall14716 GBAtemp Maniac

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    It should work for any software bricks (i.e. when the hardware isn't fucked), so yeah, probably. You just need a supported flashcart and a way to flash it.
     
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  11. Ramses

    Ramses Advanced Member

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    this is the news I wanted to hear. I'll see if someone has all this and get right on it. I use my hacked n3DS to stream and i've been having kiniption fits not streaming and not playing Monster Hunter with the boys.
     
  12. Timburpton

    Timburpton GBAtemp Advanced Fan

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    Any information of how to determine the correct CTRnand and how to use it?
     
  13. Majickhat55

    Majickhat55 The Red Woman

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    You just need one for your consoles region and the firmware you desire and use Decrypt9 to perform the transfer.
     
  14. Timburpton

    Timburpton GBAtemp Advanced Fan

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    So https://3ds.guide/9.2.0-ctrtransfer.html

    Because AFAIK, I know I can use ntrboot to load up Decrypt9.firm and do the necessary actions but not too sure what files to use
     
  15. Majickhat55

    Majickhat55 The Red Woman

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    I just told you Lol. The one for your console/region as they must match. You can do the 9.2 transfer or you can google 3DOWN and use one of the public CTRNAND transfers there. It doesn't really matter which firmware you choose, unless you want a specific one.
     
  16. Timburpton

    Timburpton GBAtemp Advanced Fan

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    Oh. Now i get what you mean. I always gotten the ctrtransfer and ctrnand mixed up. Thanks for clarifying!
     
  17. Majickhat55

    Majickhat55 The Red Woman

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    No worries, good luck :D
     
  18. LolcatPlays

    LolcatPlays GBAtemp Regular

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    My O3DS got bricked by turning it off right when I began the downgrade as I had to go to school. What type is this? The LED comes on but it's just a black screen.
     
  19. wormdood

    wormdood pirate booty inspector

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    software . . . the two types of brick you cant fix this way are hardware (ex you dropped the system and it never turned on again) and mcu . . . mcu is not common and only happens when homebrew incorrectly messes with the notification lights or closing the lid on a n3ds while it has o3ds firmware installed

    in conclusion just try it it will likely work for you
    if it does not then you already had a unrecoverable mcu brick so you cant possibly make it any worse . . . go for it
     
    Last edited by wormdood, Aug 24, 2017
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  20. Platinum Lucario

    Platinum Lucario GBAtemp Advanced Fan

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    Ah I see, then it's just a software brick. So what you'll need to do is use GodMode9 via the NTRBootHax exploit and restore a NAND backup.

    If you really had a MCU brick, then the LED light wouldn't have come on at all, in fact the 3DS wouldn't be able to power on at all.
     
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