How do I COMPLETELY reset my DS and remove CFW and everything, but also downgrade to 9.0

Discussion in '3DS - Flashcards & Custom Firmwares' started by xXxSwagnemitexXx, Aug 9, 2017.

  1. xXxSwagnemitexXx
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    xXxSwagnemitexXx The person who asks n00b questions

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    I'm on 11.4.0-37E and I heard that you can't downgrade, but please give me a guide on how to reset and downgrade please.
     


  2. GerbilSoft

    GerbilSoft GBAtemp Addict

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    Best option: Restore an old NAND backup that you should have taken before hacking the system.

    Alternate option: https://3ds.guide/9.2.0-ctrtransfer.html

    EDIT: After ctrtransfer, you'll still have A9LH/B9S installed. I believe SafeB9SInstaller can remove B9S. You might have to temporarily upgrade from A9LH to B9S if you have A9LH installed, though.

    EDIT 2: After restoring the NAND backup, if you don't want to format the system, you may want to pull the battery to reset the clock. Otherwise, Download Play might show up in the activity log as being used for more than a year straight.
     
    Last edited by GerbilSoft, Aug 9, 2017
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  3. xXxSwagnemitexXx
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    xXxSwagnemitexXx The person who asks n00b questions

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    I think I still have my NAND backup but if not i'll read this, Thanks!
    Edit: I did still have it and I am copying it over now (after clearing loads of space but I will format my SD l8r anyway)
     
    Last edited by xXxSwagnemitexXx, Aug 9, 2017
  4. aarti

    aarti GBAtemp Regular

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  5. xXxSwagnemitexXx
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    xXxSwagnemitexXx The person who asks n00b questions

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    Thanks

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    It doesn't downgrade your sys tho

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    But wouldn't that be cool to show ur friends
     
  6. aarti

    aarti GBAtemp Regular

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    oops haven't seen that
     
  7. xXxSwagnemitexXx
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    xXxSwagnemitexXx The person who asks n00b questions

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    Oh ok

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    Using Decrypt9
    Selected: [NAND Restore]
    No useable file found

    where do I put my backup?
     
  8. KunoichiZ

    KunoichiZ GBAtemp Guru

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    files9 folder.
     
  9. xXxSwagnemitexXx
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    xXxSwagnemitexXx The person who asks n00b questions

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    K thx
     
  10. GerbilSoft

    GerbilSoft GBAtemp Addict

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    Should be: /files9/sysNAND.bin

    EDIT: 2slo.
     
  11. xXxSwagnemitexXx
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    xXxSwagnemitexXx The person who asks n00b questions

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    Well, at least I know what to call it bcuz I renamed it nand

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    Ugh, says it's from another DS so I guess I will go with CTR
     
  12. xXxSwagnemitexXx
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    xXxSwagnemitexXx The person who asks n00b questions

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    I'm so scared right now because I forgot to do the NAND backup before flashing the CTR
    Edit: Apparently it succeeded, let me see
    Edit2: Oh jesus, I think I bricked it Iturn it on, the blue light shows, then it goes off again and start or select being held down does NOTHING
     
    Last edited by xXxSwagnemitexXx, Aug 9, 2017
  13. Lacius

    Lacius GBAtemp Guru

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    The blue light going on and off again means everything is probably fine, but you don't have a boot.firm (like Luma3DS) on the root of your SD card.

    Out of curiosity, why do you want to remove CFW?

    Edit: In any case, the steps given to you are correct:
    1. Do a 9.2 CTRNAND transfer
    2. Uninstall B9S
     
    Last edited by Lacius, Aug 9, 2017
  14. xXxSwagnemitexXx
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    xXxSwagnemitexXx The person who asks n00b questions

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    Thanks for the info

    I wanna remove CFW because I just want a clean 2DS for a while, then I might try out a different CFW
     
  15. Lacius

    Lacius GBAtemp Guru

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    Why do you want a clean 2DS for a while? You're risking accidentally locking yourself out from being able to reinstall CFW in the future, when a clean 3DS is nearly indistinguishable from a CFW 3DS when not using CFW features.
     
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  16. xXxSwagnemitexXx
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    xXxSwagnemitexXx The person who asks n00b questions

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    IDK actually....

    BTW I had a boot.firm on my SD bcuz I had it on there before CTR but I will put luma on it again and see
     
  17. Lacius

    Lacius GBAtemp Guru

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    If you have no good reason to be removing CFW, it is highly recommended that you not do it. You're taking unnecessary risks with no potential for gain.

    My humble advice: Do not remove B9S. If you want start clean, do something like uninstall CFW titles (FBI, freeShop, etc.), or format your 3DS.
     
  18. xXxSwagnemitexXx
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    xXxSwagnemitexXx The person who asks n00b questions

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    I already have and even tho I have boot.firm it is still doing the blue light thing

    Please help!!!
     
  19. Lacius

    Lacius GBAtemp Guru

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    This is what happens when you take unnecessary risks. Hopefully you've learned your lesson.

    DId you perform just the 9.2 CTRNAND transfer guide, or did you also uninstall B9S? I can't help you if I don't know what you did, and you're sending mixed messages.
     
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  20. xXxSwagnemitexXx
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    xXxSwagnemitexXx The person who asks n00b questions

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    It's because I wanted a different CFW but I didn't want to say in case everybody gave me loads of hate