[HO+TUTO] Downgrade por Software • Desde 10.7 hasta 9.2 • [Pedir CIAs = BAN]

Saikuro escribió:Añado una lista con los hashes de los .zip de los firmwares, comprobad que sean estos, que si no, luego os queda un bonito brick.

O3DS 9.2.0-20U:
MD5: 879f437d7c78f09ae565f79f5aa9c421
SHA-1: ccc272c495a84aa49f8db2da6072a79a73053e19

O3DS 9.2.0-20E:
MD5: caec3e015bc065dd0ca512f219c8fc3c
SHA-1: 63f0e83892af0f43d159685b4d775e09360552e4

O3DS 9.2.0-20J:
MD5: a7c14f50e553d99d93efd3a8dd4f8b9d
SHA-1: 422af53b07c270d65bf443d09736f3d1c540641c

N3DS 9.2.0-20U:
MD5: e5f40c3b155cfd12ef38be35d2e81d2e
SHA-1: 377c140377fb6cf31a0c032c4e1196cc521f87fe

N3DS 9.2.0-20E:
MD5: 6dcca8fcbc9a28c82c2a4e5182f3acf8
SHA-1: e7c77bf205137167f1f1befa0c4db9d879a21a2e

N3DS 9.2.0-20J:
MD5: f46677696ed4bf0e182de5a8168b7542
SHA-1: c9a1aaf4a4923fb5e065546da5c4a4da37aafdb2

Nuevo sysUpdater supuestamente mas seguro:

Hi,

Since some people seems to wait for a safer downgrader, i did one in a few hours. This is a fork of sysupdater, with a few things added which should prevent some errors (wrong region downgrade pack, corrupted downloads...) :

- automatically load update information (needed files, md5) based on your 3ds model and region
- md5 check all the cia update files before downgrading
- can check your update files without actually downgrading

To use it you have to :

- Put SafeSysUpdater.3dsx somewhere you can launch it...
- Put your downgrade pack as usual ("/updates/*.cia")
- Launch it multiple times until it pass the black screen (hax)...
- Pray

PLEASE NOTE THAT THIS HAVE THE SAME DOWNGRADE CODE THAN ORIGINAL SYSUPDATER
DOWNGRADE PROCESS IS NEVER 100% SAFE
BE SURE TO BE ON 10.3 BEFORE DOWNGRADING, SEEMS TO PREVENT SOME SOFT BRICK
SOME TIPS TO PREVENT A BRICK : HERE


Changes :

v05

minor input fix

v04

added japan support

v03

big improvement in hax success rate

v02

Add simulation mode to check your update files without actually downgrading

v01

Removed the config files, just put the ".3dsx" file somewhere and downgrade... and pray.
Added a CIA version to downgrade from emunand so you don't need to try hard to get the hax to succeed (so it's just for testing/reporting bugs). Testing this will ensure the MD5 for each regions/models (only o3DS/n3DS USA/EUR for now) and downgrade process is correct/working. Thanks for reports !


Source code : https://github.com/Cpasjuste/SafeSysUpdater
Fuente

Código Fuente
Descarga v05

Se trata de SafesysUpdater desarrollado por Cpasjuste, creador del CtrBootManager entre otros.

Primera versión de KTM NO oficial:

if everyone is so eager to try KTM, here is the precompiled version
now don't say i didn't warn you guys. you should wait for the official release first, before jumping into this one.

Fuente
Descarga
Como siempre se recomienda NO utilizarla hasta que lo hagan otros con hardmod, ademas de que todavía NO es la versión oficial.

Saikuro escribió:He traducido el tutorial que han puesto hace unos mensajes, a ver si así al menos la gente se aclara un poquito.

AVISO: Si tu consola es japonesa tendrás que eliminar el archivo 000400102002CA00 para no sufrir un brickeo. De momento no se sabe si las consolas de otras regiones también deben eliminarlo.

A TENER EN CUENTA: Hasta el momento NADIE ha brickeado su consola. De todas formas, no soy responsable si tu consola se brickea, hazlo bajo tu propio riesgo.

Antes de empezar, elimina cualquier servidor DNS que tuvieras en la consola (como Tubehax por ejemplo). Puede interferir en el proceso del downgrade.

1. Descarga la última versión de sysUpdater desde aquí y extraelo en la carpeta '3ds' de la tarjeta SD.
2. Crea una carpeta llamada 'updates' en la raíz de la tarjeta SD.
3. Coloca todos los CIAs de la actualización a la que quieres downgradear en la carpeta que acabamos de crear. (¡No se pueden publicar enlaces por motivos legales!)
4. Vuelve a colocar la tarjeta SD en la consola y enciéndela.
5. Abre Homebrew Launcher con el método que prefieras y ejecuta sysUpdater.
6. Si todo va bien, deberían aparecer unas opciones. Dado que estamos downgradeando, pulsa el botón Y.
7. Espera y NO TOQUES NADA. La aplicación avisará cuando haya terminado. (Me llevó menos de 5 minutos)
8. Una vez que la aplicación avisa de que ya ha terminado, espera. Se reiniciará automáticamente.
9. Muérdete las uñas aguantando el suspense. Si todo ha ido correctamente...
10. ¡Tienes tu 3DS downgradeada!

PROBLEMAS COMUNES:
Problema: La aplicación se congela en ciertos pasos.
Solución: Intenta otro método para cargar Homebre Launcher. Al principio probé con IronHax y me daba problemas, después probé con OoT3DHax y funcionó.

Problema: Aparece el texto en pantalla pero cuando pulso el botón no ocure nada.
Solución: Espera un tiempo o reinicie y vuelve a probar.

Problema: He conseguido downgradear, pero la pantalla de mi 3DS está en negro.
Solución: Intenta encender la consola quitando la tarjeta SD o reinicia en modo recovery.

Tutorial original en inglés:
Hello!
In recent days, there have been many developments within the 3DS homebrew community, with one of them being kernel access! With this, we now have a way to downgrade 3DSs and do whatever we want with kernel on >=9.3 3DSs. What's that? You want to downgrade? Well then, here's how...

PLEASE NOTE: At the point in time of writing this tutorial, this is not confirmed work on the N3DS. I will quickly update this whenever it does work.

ALSO NOTE: Note: So far NO ONE HAS BRICKED THEIR 3DS FROM THIS. HOWEVER, I AM STILL NOT RESPONSIBLE IF YOUR 3DS BRICKS. If it does, I'm sorry, but it is NOT my fault.

Before beginning, remove any DNSs (like Tubehax) that you may have on your 3DS. This can interfere with the downgrading process.
Grab the sysUpdater app from here and place it into the '3ds' folder of your SD card.
Make a folder called 'updates' on the root of your SD card.
Place all of the CIAs for the update you wish to downgrade to into the folder. (I cannot link these for legal purposes. Sorry!)
Eject your SD card, put it into your 3DS, and boot.
Open up the Homebrew Launcher in your entrypoint of choice and start the sysUpdater app.
If everything goes well, you should have some options. Since we're downgrading, you can go ahead and press the Y button.
Wait and DO NOT touch anything. The app will tell you when it is done. (It took me less than 5 minutes)
Once the app prompts you that it is done, wait. It will reboot automatically.
Bite your fingernails in suspense. If everything goes correct...
Your 3DS will be downgraded!
COMMON PROBLEMS:
Issue: The app freezes at a certain step!
Solution: Try a different entrypoint. I was using Ironhax and got this problem, so I switched to OoT3DHax and it worked.

Issue: The prompt comes on screen, but nothing happens when I press a button!
Solution: Either wait a few moments or reboot the system and try again.

Issue: I downgraded, but my 3DS screen is completely black upon reboot!
Solution: Try removing the SD card, or you can reboot into recovery mode.

(please recommend any other issues and solutions to add here please!)
​
CREDITS:
@Steveice10, @TuxSH, @julian20, @mid-kid, @delebile, and @MassExplosion213 and @motezazer for working on memchunkhax2.
Note: So far NO ONE HAS BRICKED THEIR 3DS FROM THIS. The only person who actually bricked his 3DS could have recovered it by entering safe mode, but he had the TubeHax DNS and so it didn't allowed him to update.
profi200 for sysUpdater, and @TuxSH for getting it to work for properly downgrading.
@JustPingo for various research efforts and for the upcoming KTM, a safer way to do this.

Nueva actualización de sysUpdater mas estable:

Tutorial en ingles:
https://gbatemp.net/threads/tutorial-th ... ds.407888/


Como siempre solo se recomienda hacer si teneis hardmod.

Hoy se ha actualizado la herramienta sysUpdater que en combinación con el nuevo MCH2 es capaz de downgradear consolas con 9.3 o superior:

De momento es muy inestable y puede provocar bricks, por lo que NO es recomendable utilizarlo sin un hardmod, pero es cuestión de tiempo que sea estable.

SNSHax queda obsoleto y el downgrade será mediante el MemChunkHax 2:

fmkid escribió:Pues, al parecer, es cierto lo que dicen: El SNSHax será dejado de lado en favor del MCHax2, y el "Kernel Time Machine" será lanzado para usarse con este último...
Y aquí algo de información al respecto: https://twitter.com/JustPingo/status/683419638387097600

SNSHax en Desarrollo, para realizar downgrade desde 9.3 - 10.1 a 9.2:

In the recent talk by Smea, Derrek and Plutoo we learned about a new hack called SNShax

Tl;Dr
SNS means Safe Nintendo Shell, and the hax possible with it can be used to downgrade from 9.3-10.1 down to 9.2, and it is currently only possible on a new3ds, though Smea has said it may be possible on old3ds with a workaround. It was patched in system version 10.2

Vuln
SNShax is a small oversight by Nintendo, usually the NS service (possibly meaning Nintendo Shell, though that is speculation) is in an area inaccessible to the GPU, meaning gspwn isn't useful for using it. However the new3ds safemode version of NS can be launched and, since the original NS service is still in use, it has to be allocated in an area accessible by gspwn (provided the memory is set up properly) and access can be gained, with ROP, to the services it uses (am:u and others) which, in turn, can be used to downgrade. It is not possible on the o3ds (yet) as the Safe Nintendo Shell version the o3ds uses is prevented from launching while the standard version is still running. This wouldn't be a problem if NS wasn't required to start any version of itself up.

Uses
As stated above it is possible to use this to downgrade any system title, in turn allowing full system version downgrades. This makes it possible to downgrade to any system version which we have legit CIAs for.
Fuente

Smea y cia han conseguido realizar downgrade desde firmwares 10.1 a 9.2, de momento no es publico, y solo funciona en consolas New3DS.

Salu2 y Felices Fiestas!