How do I undo 2.1.0 ctrtransfer and a9lh?

Discussion in '3DS - ROM Hacking, Translations and Utilities' started by JasonMoh, Nov 18, 2016.

  1. JasonMoh
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    JasonMoh Advanced Member

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    Hi everyone,

    From previous post, I did 2.1.0 ctrtransfer and installed a9lh but now I want to undo and unstall a9lh because now I can't run gateway with NVRAM (through settings and profile method). I had 4.3.0-10U O3DS and I want to revert back to how it was. If there is a factory reset, I would do it as long as o3ds is lower than 4.5.0.

    Right now, when I take my SD card out, 3DS doesn't boot up. Before 2.1.0 ctrtransfer and a9lh, 3DS booted up fine without SD card. But my main reason is that now, I can't run gateway and I want o3ds back to way it was.

    Is there a way to revert back?
     
    Last edited by JasonMoh, Nov 18, 2016
  2. ShawnTRods

    ShawnTRods GBAtemp Psycho!

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  3. SomeGamer

    SomeGamer GBAtemp Guru

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    You can easily boot Gateway if you have A9LH installed. Are you sure you want to revert back?
     
  4. JasonMoh
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    JasonMoh Advanced Member

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    To make it clear, I was following this guide, https://plailect.github.io/Guide/installing-arm9loaderhax, and I got stuck at Section V step 4 because I couldn't inject regional .app file because Hourglass couldn't find it. So, I stopped midway. I don't know if it counts as a9lh installed because I still have Nintendo's original health and safety.

    If it still counts as a9lh installed, I want to know how I can boot gateway cause now, it is keep giving me errors if I try to access gateway with profile method.
     
  5. SomeGamer

    SomeGamer GBAtemp Guru

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    Inject the app file then use the method linked above my post.
     
  6. JasonMoh
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    JasonMoh Advanced Member

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    The problem is, like I said, Hourglass cannot find the .app file even if I followed the guide and put regional.app files into files9 folder. When I enter Hourglass, it shows "No usable file found". So, I have to nothing to inject despite files being present in files9 folder.

    Hourglass only shows hs.app which I backuped and nothing else. I press arrow keys on D-pad at every direction and Hourglass only displays hs.app.
     
    Last edited by JasonMoh, Nov 18, 2016
  7. SomeGamer

    SomeGamer GBAtemp Guru

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    Have you downgraded in the past with GW?
     
  8. JasonMoh
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    JasonMoh Advanced Member

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    No, my O3DS was always v4.3.0. I never downgraded.

    My title ID is 0004001000021300 if that matters.
     
    Last edited by JasonMoh, Nov 18, 2016
  9. xtheman

    xtheman GBAtemp Guru

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    What .app did you put on your 3ds. You have a9lh. Once you get past that step and do the last one you will be able to boot 3ds without sd card
     
  10. JasonMoh
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    JasonMoh Advanced Member

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    I put all the files that I unzipped from "fbi-2.4.2-injectable.zip".
    From FBI_v2.4.2_N3DS_EUR_injectable.app to FBI_v2.4.2_O3DS_USA_injectable.app. Thats total of 11 .app files.
     
  11. xtheman

    xtheman GBAtemp Guru

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    Delete all .apps except FBI_v2.4.2_O3DS_USA_injectable.app.
     
  12. JasonMoh
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    JasonMoh Advanced Member

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    Hourglass still says "No usable file found".
     
  13. xtheman

    xtheman GBAtemp Guru

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    Rename to hs.app
     
  14. KunoichiZ

    KunoichiZ GBAtemp Guru

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    Try using an older version of Hourglass9. Or what xtheman said.
     
  15. cravas

    cravas GBAtemp Advanced Fan

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    Did you Update to latest firware via system settings?
     
  16. JasonMoh
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    JasonMoh Advanced Member

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    Nope, it still doesn't work.

    I tried 2 older versions, v1.30 and v1.22. Still doesn't work.
     
  17. xtheman

    xtheman GBAtemp Guru

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    Redownload. The must be corrupt.
     
  18. JasonMoh
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    JasonMoh Advanced Member

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    If you mean Section 4 of the guide and Step 3, no I skipped that cause I was afraid if I do system update, my sysnand would be forever 11.2 instead of 4.3.0-10U.
     
  19. cravas

    cravas GBAtemp Advanced Fan

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    Then update it now.
    And YES IT IS SAFE.
     
  20. KunoichiZ

    KunoichiZ GBAtemp Guru

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    If you have a9lh installed, it's COMPLETELY SAFE to update to 11.2.