OTP Guide

DigitalJosee · Feb 16, 2016

TR_mahmutpek said:
Just a little question: Why we trying downgrade to lowest firmwares?

The only way to dump OTP is downgrading to 2.1 or lower, Nintendo patched the vunerability.

I'm stuck on the "Exploiting ARM9" (http://imgur.com/DDrpap3), that's sad, I already downgraded, dumped the OTP, upgraded to 9.2 but now I can't install it properly. Anyone have any idea of how I can get it to install correctly?

Plailect · Feb 16, 2016

capito27 said:
yeah... if you are on N3DS DO NOT FOLLOW THAT GUIDE, IT WILL BRICK YOUR SYSNAND, yes, i said WILL, not might/very probably.
as for the reason why ; it's because it asks to downgrade on emunand using sysupdater, which DOESN'T downgrade the firm partitions, so you will end up with a 2.1 sysnand and a 9.2 firm partition...not even sure that boots, for the guide to actually work, both firm partitions (dumped from a 2.1 O3DS) need to be injected back into the emunand backup before flashing it to sysnand.
i will edit the message whenever it changes

Confirmed by mid-kid, who wrote CakesFW, upon doing a downgrade with sysUpdater on emuNAND, the emuNAND's firm will be downgraded. Usually in emuNAND we perform a firmlaunch with the firmware on the SD card, but the emuNAND still has it's own firm we don't use. In this, we are using that normally unused firm that is a part of emuNAND and downgrading it to flash to sysNAND. This has been tested and shouldn't brick your n3DS (except by random chance with the transfer screwing up or something).

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DigitalJosee said:
The only way to dump OTP is downgrading to 2.1 or lower, Nintendo patched the vunerability.

I'm stuck on the "Exploiting ARM9" (http://imgur.com/DDrpap3), that's sad, I already downgraded, dumped the OTP, upgraded to 9.2 but now I can't install it properly. Anyone have any idea of how I can get it to install correctly?

Restore your sysNAND from backup.

DigitalJosee · Feb 16, 2016

Plailect said:
Restore your sysNAND from backup.

B-but again?
Will try in a sec.
I'm using menuhax as entry-point, could that lead to the problem?

capito27 · Feb 16, 2016

Plailect said:
Confirmed by mid-kid, who wrote CakesFW, upon doing a downgrade with sysUpdater on emuNAND, the emuNAND's firm will be downgraded. Usually in emuNAND we perform a firmlaunch with the firmware on the SD card, but the emuNAND still has it's own firm we don't use. In this, we are using that normally unused firm that is a part of emuNAND and downgrading it to flash to sysNAND. This has been tested and shouldn't brick your n3DS (except by random chance with the transfer screwing up or something)

was the guide actually tested ? on N3DS

Plailect · Feb 16, 2016

DigitalJosee said:
B-but again?
Will try in a sec.
I'm using menuhax as entry-point, could that lead to the problem?

If you already got the OTP, then you are restoring your sysNAND and emuNAND we made in section I.

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capito27 said:
was the guide actually tested ?

2DS is completely untested (nobody working on this had one), old 3ds is tested and works fine, the downgrade portion of the new 3ds part was tested to work with firmware 1.0, and should work with 2.1

Just Passing By · Feb 16, 2016

Plailect said:
If you already got the OTP, then you are restoring your sysNAND and emuNAND we made in section I.

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2DS is completely untested (nobody working on this had one), old 3ds is tested and works fine, the downgrade portion of the new 3ds part was tested to work with firmware 1.0, and should work with 2.1

2ds is the worst thing ever lol. I've downgraded three times and each time ended up with an error message from the console. I assume you've at least glanced at the previous page, so I was wondering if you had any suggestions. I really don't want to throw myself head first into another restore and downgrade just to see it fail again.

DigitalJosee · Feb 16, 2016

Plailect said:
If you already got the OTP, then you are restoring your sysNAND and emuNAND we made in section I.

I have did it, upgraded to 6.1 using Pokemon, than restored my sysNAND using Decrypt9.
I'm installing arm9loader (https://github.com/delebile/arm9loaderhax), have compiled fine and so, but my 3dsx stuck on "Exploiting ARM9", that's my problem.

capito27 · Feb 16, 2016

Plailect said:
If you already got the OTP, then you are restoring your sysNAND and emuNAND we made in section I.

--------------------- MERGED ---------------------------

2DS is completely untested (nobody working on this had one), old 3ds is tested and works fine, the downgrade portion of the new 3ds part was tested to work with firmware 1.0, and should work with 2.1

yeah, i checked the source of sysupdater and noticed that the latest release inlcuded tux's firm install fix, thus making my previous statement wrong ^^

Plailect · Feb 16, 2016

Just Passing By said:
2ds is the worst thing ever lol. I've downgraded three times and each time ended up with an error message from the console. I assume you've at least glanced at the previous page, so I was wondering if you had any suggestions. I really don't want to throw myself head first into another restore and downgrade just to see it fail again.

The errors mean that you're getting partial downgrades. Unfortunately, this is random and you just have to keep trying.

Xenon Hacks · Feb 16, 2016

Gonna backup my content and give this a go

@Plailect thanks for making a clean tut.

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@Plailect Got a question about this

Any other game cart (read: not Cubic Ninja) that contains an update version between 4.0 and 9.2 (See 3dsdb for which carts contain what updates)

Do we really need another cart or can we simply run sysupdater? Or simply restore a 9.2 backup through hard mod?

Plailect · Feb 16, 2016

Xenon Hacks said:
Gonna backup my content and give this a go @Plailect thanks for making a clean tut.

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@Plailect Got a question about this

Any other game cart (read: not Cubic Ninja) that contains an update version between 4.0 and 9.2 (See 3dsdb for which carts contain what updates)

Do we really need another cart or can we simply run sysupdater?

The framebuffers changed at some point between 2.1 and 4.0, so anything with an interface will just be a black screen. In addition I don't know how sysUpdater will interact with a 2.1 system even if you could get it to launch.

Until we do more testing and/or get sysUpdater working a cart is a requirement.

Xenon Hacks · Feb 16, 2016

Plailect said:
The framebuffers changed at some point between 2.1 and 4.0, so anything with an interface will just be a black screen. In addition I don't know how sysUpdater will interact with a 2.1 system even if you could get it to launch.

Until we do more testing and/or get sysUpdater working a cart is a requirement.

Cant I just restore a Sysnand backup?

Plailect · Feb 16, 2016

Xenon Hacks said:
Cant I just restore a Sysnand backup?

Possibly. There was speculation in the IRC channel of either fixing Decrypt9 or modifying it to run without displaying anything and just automatically restore a NAND backup but that was deemed risky.

Xenon Hacks · Feb 16, 2016

Plailect said:
Possibly. There was speculation in the IRC channel of either fixing Decrypt9 or modifying it to run without displaying anything and just automatically restore a NAND backup but that was deemed risky.

Fooey guess im stepping out in this cold ass weather thanks anyways.

Plailect · Feb 16, 2016

Xenon Hacks said:
Fooey guess im stepping out in this cold ass weather thanks anyways.

Also if you have a hardmod then that would also work, but this guide was aimed at possibly not requiring one in the future when it's more stable.

Xenon Hacks · Feb 16, 2016

Plailect said:
Also if you have a hardmod then that would also work, but this guide was aimed at possibly not requiring one in the future when it's more stable.

I do Have a hard mod

Plailect · Feb 16, 2016

Xenon Hacks said:
I do Have a hard mod

Then you can substitute all SysNAND backup and restore steps with using your hardmod. Once you have the OTP just restore from backup instead of updating.

democracy · Feb 16, 2016

Thank you for this guide, does it work for 9.0 sysnand N3ds?

CTRNAND Padgen 0x4 where is the option to dump in the Decrypt9 linked to in the tutorial? Cant find it? EDIT; guide links to gihub and the req version hasnt been posted yet

On another note, do .3ds games typically contain update data? On wii & psp they we stripped out.

Ricardo Cariaga · Feb 16, 2016

for what is OTP ??.. i have hardmode new3ds here.. im confuse.

Classicgamer · Feb 16, 2016

Ricardo Cariaga said:
for what is OTP ??.. i have hardmode new3ds here.. im confuse.

Nothing to worry about until your cfw starts using it.

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