otp.bin help!

Discussion in '3DS - Flashcards & Custom Firmwares' started by Regnum, May 14, 2017.

  1. Regnum
    OP

    Regnum Member

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    A few months ago, I installed CFW on two 3DS systems and backed up each of their otp.bin. Recently, one of the system's SD card corrupted and I lost everything. I was able to recover most of it. But now I'm having trouble recovering the otp.bin. I have two and I don't know which one goes with which 3DS, is there a way I could tell which otp.bin is for which 3DS?
     
  2. GizmoTheGreen

    GizmoTheGreen GBAtemp Fan

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    well firstly you should have kept secure backups of your OTP.bins, on your pc and preferably online on some service like google drive, pretty sure the guide mentions this.
    and secondly, no there is no way to tell without going through the process of going back to 2.1 again.

    but thirdly you should not need them again since your systems are already a9lh hacked yes? so don't screw up anything else from this point on and you'll be fine, lol.
     
  3. queendude

    queendude GBAtemp Regular

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    It's really easy to tell. If you install the wrong otp.bin youll brick, if you install the right one nothing will happen. Simple.
     
    StarTrekVoyager likes this.
  4. Kubas_inko

    Kubas_inko 3DS Hardmoder

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    I know, that this is if topic, but I put homebrew a9lh and luma on friends old3ds, but it never generated opt.bin file. When I have done it on mine, it generated it. What am I supposed to do?
     
  5. Regnum
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    Regnum Member

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    is it possible to reverse the brick, if i pick the wrong one?
     
  6. Aluminite

    Aluminite Member

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    Supposedly, if you have a NAND backup.
    ...and a hardmod.
     
  7. Regnum
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    Regnum Member

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    I have NAND Backups, but i don't have a hardmod. Would i still be able to?
     
  8. Aluminite

    Aluminite Member

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    If you need the otp.bin so badly, just dump it again and avoid the risk of bricks.
     
  9. Lilith Valentine

    Lilith Valentine GBATemp's Wolfdog™ ☠️Grunt☠️

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    Between insane and insecure
    You don't need your OTP anymore. Seriously, it's only useful for installing A9LH. Once you've installed A9LH it's suggested to back up, but you really don't have to.
     
    Wojton likes this.