[Tutorial] A9LH Users: Recover From Formatted/Deleted SD Card

Discussion in '3DS - Tutorials' started by bahamut920, Oct 6, 2016.

  1. bahamut920
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    Member bahamut920 GBAtemp Fan

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    You can do a System Format in your 3DS options to "start from scratch"; it will erase all software on your 3DS that did not ship with the system, and will unlink any linked NNID. It won't affect system software or firmware version, nor will it affect A9LH.

    In order to get rid of A9LH, you need Decrypt9, and a NAND backup made before you installed A9LH. Just put the Decrypt9 app in the "payloads" directory just like Hourglass9, rename it (I personally use either "X_Decrypt9.bin" or "Y_Decrypt9.bin", I don't remember offhand), and then restore your backup using the same method you would in Hourglass9. There are two options to restore a NAND backup in D9, obviously you don't choose "Restore (keep A9LH)".
     


  2. atin675

    Newcomer atin675 Member

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    This process would work exactly the same if you did this on a formatted cfw 3ds right?
     
  3. bahamut920
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    Member bahamut920 GBAtemp Fan

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    The first part, at the very least, is A9LH-specific and completely unnecessary on a 3DS without A9LH. It's not even necessary with all installations of A9LH. Honestly, I don't know all that much about non-A9LH/Luma setups, aside from the fact that an EmuNAND is required somewhere along the line. I waited for the 3DS to be as "hacked" as the PSP was before really paying attention to the scene, so by the time I was ready to go with mine, the Plailect guide was well-established and I just dove all the way down the rabbit hole in one go.
     
  4. N1N

    Newcomer N1N Member

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    Help? I'm using a USA N3DS on 11.2.

    http://imgur.com/a/5glTC

    EDIT: Never mind, I've managed to fix most of the problems by myself. I'm more lucky than I realize to have backups of mostly everything, albeit scattered all over my computer
     
    Last edited by N1N, Jan 31, 2017
  5. kiritomens

    Newcomer kiritomens Newbie

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    i'm just fucking stupid i formatted with my sd not in my 3ds so nothing fucking work hs app FBI does't want to instal anything i can't boot in to HG9 or luma settings or GM9 for some reason so i thout lets just back up my shit and fallow this TT fallowd everything stil does't want to boot into HG9 for some reasom WTF am i supposed to do like shit
     
  6. bahamut920
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    Member bahamut920 GBAtemp Fan

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    Honestly, it sounds like you don't have the Luma files on your SD card, or they're in the wrong place. Did following the tutorial at least get FBI and/or Luma settings (hold Select on boot) working? If they work, check the name on your HG9 bin file. It needs to be "start_HG9.bin", "x_HG9.bin", or "y_HG9.bin".

    If none of that works, try reformatting and following the tutorial again.
     
  7. TheArcaneArtyst

    Newcomer TheArcaneArtyst Newbie

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    When I did Step 16, I got a message:

    "Code / Crypto: CTR-N-HACE / 7x
    slot0x25KeyX not set up
    This won't work on O3DS < 7.x or A9LH"
    Health&Safety Dump: failed!"

    I'm not 100% sure what I should do...

    EDIT: Wait, nvm. This question was asked already
     
    Last edited by TheArcaneArtyst, Mar 11, 2017
  8. cow

    Newcomer cow Member

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    hello guys!

    i have a issue i have done this with my n3ds xl i don't know what to do now?!
    what are my option what kan i do?

    Updating/Formatting a New 3DS via System Settings on 2.1


    Since there's no New console that officially supports versions lower than 4.x, updating via System Setting after the 2.1 downgrade will brick your console for sure. Why this bricks is because you're running a Old3DS-exclusive version, and if you try to update or format the system
     
  9. bahamut920
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    Member bahamut920 GBAtemp Fan

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    So are you saying you're "stuck" on 2.1 because if you do a System Update, you'll brick, or are you saying you've already bricked due to updating while on 2.1 OFW?

    If the former, you should be able to use whatever system downgrader the Plailect guide is using nowadays to install the 9.2 OFW files, which will allow you to update normally. If the latter, try the "hard update" button shortcut. I forget what the exact button combination you need to hold on boot is, but you can shortcut directly to the system update, which may allow you to recover from brick. Otherwise, you might be screwed.
     

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