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

[xXxSwagnemitexXx]

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.

 

[GerbilSoft]

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.

 

[xXxSwagnemitexXx]

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

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)

 

[aarti]

https://3ds.guide/uninstall-cfw

 

[xXxSwagnemitexXx]

https://3ds.guide/uninstall-cfw

Thanks

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https://3ds.guide/uninstall-cfw

It doesn't downgrade your sys tho

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Download Play might show up in the activity log as being used for more than a year straight.

But wouldn't that be cool to show ur friends

 

[aarti]

It doesn't downgrade your sys tho

oops haven't seen that

 

[xXxSwagnemitexXx]

oops haven't seen that

Oh ok

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Restore an old NAND backup

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

where do I put my backup?

 

[KunoichiZ]

Oh ok

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

where do I put my backup?

files9 folder.

 

[xXxSwagnemitexXx]

files9 folder.

K thx

 

[GerbilSoft]

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

where do I put my backup?

Should be: /files9/sysNAND.bin

EDIT: 2slo.

 

[xXxSwagnemitexXx]

Should be: /files9/sysNAND.bin

EDIT: 2slo.

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

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Restore an old NAND backup

Ugh, says it's from another DS so I guess I will go with CTR

 

[xXxSwagnemitexXx]

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

 

[Lacius]

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

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

 

[xXxSwagnemitexXx]

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?

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

 

[Lacius]

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

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.

 

[xXxSwagnemitexXx]

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.

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

 

[Lacius]

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

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.

 

[xXxSwagnemitexXx]

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.

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

Please help!!!

 

[Lacius]

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

Please help!!!

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.

 

[xXxSwagnemitexXx]

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.

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