EDIT: This tutorial maybe outdated, technically it still work but please use Plailect's Guide, it covers even more things:



https://plailect.github.io/Guide/



EDIT: MANY USERS ALREADY BRICKED THEIR DEVICE, SO BE ABSOLUTELY SURE WHAT TO DO, THIS IS VERY DANGEROUS. WITHOUT A HARDMOD AND A NAND BACKUP A BRICK IS PERMANENT!!!

I'm doing this tutorial quickly only because we don't want to answer all "How to downgrade" question-threads seperately.

All credits belongs to TuxSH, Jason Dellaluce, Steveice10 (and some other, don't know who else right know)

KEEP IN MIND: BRICKS CAN HAPPEN AND HAPPENED TO SOME USERS!!! NO WARRANTY FOR A SUCCESSFUL DOWNGRADE!

1. You need a 3DS with any hax installed, if you have non, use Browserhax (http://yls8.mtheall.com/3dsbrowserhax.php) by yellows8 or menuhax. And of course, at least boot.3dsx in SD card root.

2. Download sysupdater and, unzip it and copy it to sd card:/3ds/ (if it does not exist, just create it...)
Mirror: https://mega.nz/#!JE1R3RhQ!MqY_OTyYrVM_DMOltiDfaZvTGZ8gCoUcATmOYEimM-U

3. You will need a complete firmware package of your desired Firmware. I recommend 9.2.0-20E/U/J.
Where do you get this package you ask? Well, Nintendo deleted all titles from their server older than 9.9.0-X, so you have to google it. I will help you to google it: http://bfy.tw/3Xqo

Cha0s Em3rald made MD5 checksum's for 9.2.0-20E/U/J N3ds/O3DS, check archive's checksum before using it! https://gbatemp.net/threads/md5-checksums-crc-for-all-9-2-update-packs.408114/

PLEASE NOTE: JP N3DS Users, you'll need to remove the 000400102002CA00 title from the download package in order to not get bricked! Do NOT install it!

4. Copy all firmware title .cia on SD Card:/update/

5. Remove smea's DNS, in case of unsuccessfull downgrade, you need in that case to start 3DS in Recovery mode to update and repair your system.

6. Start 3DS and go into Homebrewlauncher.

7. Start sysupdater

8. Wait for application to be ready. (ca. 1-5min)

9. Press Y to downgrade

10. Wait and pray until "Succeed. Reboot in 10 sec"

11. Done - Downgrade is (hopefully) complete!

I recommend to create an EmuNAND after downgrading and using a cfw Loader, like cakesFW or rxTools.


Q: Help! I have a blackscreen after the reboot!!!
A: Unplug SD Card, reboot. I think some SD data can't aren't compatible with downgraded titles, so delete your current "Nintendo 3DS" folder on SD card, if needed.

If it still doesn't boot, try to get into recovery mode, by pressing Power-Button to boot while holding L+R+Up+A, update and try again.

Q: sysupdater crashes/won't start/freeze.
A: (Hold L+R+DpadDown+B to return to Homebrew Launcher, then) start/reboot again. Some users needed over 30 attempts.
Try another hax; I used menuhax to start ctr boot manager.
TuxSH wrote that it can raise succeed boot of sysupdater if you started 3DS-FTP before and return with L+R+Down+B, then start sysUpdater

Alternative Way:
1. Backup/delete your boot.3dsx in sd root
2. Copy "sysUpdater.3dsx" to root and rename it into "boot.3dsx"
3. Plug SD card in and start hax (recommended: Menuhax)
4. *hax will load directly sysUpdater.

Q: What firmwares can be downgraded?
A: All firmwares up to newesest (10.3) can be downgraded. New 3DS is not confirmed because of no testing by TuxSH, but many users already tried and successfully downgraded their N3DS.

Q: I have an 2DS, which Firmware do I need?
A: Firmware for Old 3DS. MSET for 3DS can wants to move 3d slider after formating - you need to install only Firmware/MSET that was supported by 2DS, so NO 4.5! O3DS 9.2.0-20E should be fine, but not confirmed.

Q: It won't reboot after the finished downgrade.
A: What I did: Waited 10 minutes, then I powered it off. Downgrade suceed. You don't have another choice anyway.

 

[torchick11]

I will try with BroswerHax now

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BroswerHax doesn't work too...

Try menuhax

This makes me wonder if it might be that I'm using IronHax for this.

Ironhax doesn't work with it.

 

[Real_Redwolf]

Try menuhax



Ironhax doesn't work with it.

I installed MenuHax and tried again... With the same result. This is strange because I don't think I'm missing anything and I followed the instructions perfectly.

 

[torchick11]

I installed MenuHax and tried again... With the same result. This is strange because I don't think I'm missing anything and I followed the instructions perfectly.

Then its your 3ds. I used ironhax and it refused to work and menuhax instantly solved it.

 

[ColeTrickle]

Well, I tried downgrading my N3ds from 10.2 using this guide. http://wololo.net/2016/01/04/3ds-system-software-downgrade-tutorial/
Everything was going great until the final "reboot in 10 seconds" step. It never came back on

 

[adarsh nor]

Nevermind, got it to work using a different sysUpdate file

Can you give the sysUpdate file that worked for you?

 

[DannyJune]

Hi. I meet some problem when I downgrade. I enter sysUpdate and press Y. Then it said that failed to get .cia information. The updates document with 104 .cia document for N3DS is in the TF card and I have try many times. And I also reset the TF card but still meet this problem.

 

[torchick11]

Hi. I meet some problem when I downgrade. I enter sysUpdate and press Y. Then it said that failed to get .cia information. The updates document with 104 .cia document for N3DS is in the TF card and I have try many times. And I also reset the TF card but still meet this problem.

What firmware is your 3ds and what homebrew launcher are you using?

 

[DannyJune]

What firmware is your 3ds and what homebrew launcher are you using?

The new 3ds xl. and I use menuhax and sysupdate.

 

[einhuman197]

The new 3ds xl. and I use menuhax and sysupdate.

firmware is that thing that is written in the system settings in the corner of your system settings

 

[DannyJune]

firmware is that thing that is written in the system settings in the corner of your system settings

Sorry. It is 10.3.28U

 

[hobbledehoy899]

Is it possible to downgrade emuNAND?

 

[Jaysus88]

Hello Guys!
My friend in i bought us 2 n3dsxl and now we are stuck. i have 2 querstions:

first: my friend is/was on firmware 9.6 and followed a tutorial to downgrade, all was fine until he was finally in sysupdater and the downgrade process failed after the first 4-5 entries.
After a Reboot without SD Card everything seemed to run normal but now he can´t launch the menuhax site anymore. We formated the SD card and the system and started from scratch but nothing helped - still no browserhax. is he fucked? what can we do?

second: i am currently on 9.0 and wanted to update to 9.2 that i am on the same firmware as everybody else - dont know why but i want to.
is the update process the same as the tutorials for downgrading?

Thanks guys, you are the only help.

 

[torchick11]

he can´t launch the menuhax site anymore.

There is no "menuhax site"

 

[Jaysus88]

i meant browserhax, sorry.
the site loads for a couple of second and then the browser just crashes back to the homemenu.

 

[torchick11]

i meant browserhax, sorry.
the site loads for a couple of second and then the browser just crashes back to the homemenu.

Idk, should be using menuhax to downgrade with sysupdater.

 

[cooroxd]

Hello Guys!
My friend in i bought us 2 n3dsxl and now we are stuck. i have 2 querstions:

first: my friend is/was on firmware 9.6 and followed a tutorial to downgrade, all was fine until he was finally in sysupdater and the downgrade process failed after the first 4-5 entries.
After a Reboot without SD Card everything seemed to run normal but now he can´t launch the menuhax site anymore. We formated the SD card and the system and started from scratch but nothing helped - still no browserhax. is he fucked? what can we do?

second: i am currently on 9.0 and wanted to update to 9.2 that i am on the same firmware as everybody else - dont know why but i want to.
is the update process the same as the tutorials for downgrading?

Thanks guys, you are the only help.

I suggest don't be an idiot and update your 9.0 to 9.2. There's absolutely no reason for you update to 9.2 because there's no difference between them. In addition, there's a risk you will end up like your friend or worse.

My suggestion for you is install emunand and get rxtools set up and forget about updating to 9.2. After, you get everything set up you can help your friend.

To help your friend, he needs another way to get into homebrew channel. The only way you can help is if you have oot (ocarina of time). With your hack 3ds already set up, you can install the hack save file. After setting up oot, you can give it to your friend to use and he can do the downgrade again with sysupdater.

Another alternative is your friend can try to hard mod it (soldering skills required) or if you have ninjhax (cubic ninja)

These are your only options, no exceptions

 

[mudassirul]

o3ds 9.7E trying to upgrade to 10.3E with menuhax and latest sysupdater, no luck. The older build had memchunkhax, has removing this caused the latest version to run less successfully?

 

[biodante]

quick question guys, I installed homebrew menu on my old 3ds 10.5, this method should work to downgrade!?

 

[einhuman197]

Yes.

 

[CloudCocopuffs]

I pressed downgrade instead of update! Am i screwed? I AM SO SCARED RN

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HELP ASAP?