Full Guide Release!

https://plailect.github.io/OTP/

All regions now supported!

If you appreciate this guide and the work I put into maintaining it, I accept donations through both Bitcoin and PayPal.

If you felt like the guide helped you out then I'd really appreciate it! If I get enough I may buy a 2DS for testing hardware stuff so I don't break another N3DS.

If the guide didn't help you out then I'm really sorry about that

 

[democracy]

Never mind, fixed nnid

 

[Plailect]

I have asked a couple time now but this thread is moving fast enough I think people might have missed it. Do sysNAND and emuNAND have to be linked/unlinked or does it even matter to perform the steps of the OTP guide. Mrrraou was kind enough to let me know to use only sd or sdhc to perform. Any guidance will be appreciated. For successful N3DS users please enlighten me on the path to arm9loaderhax.

They must be unlinked.

 

[stl25]

That it was I assumed, but it is safer to ask. Thank you for your reply.

 

[James310]

When i try to downgrade emunand with sysupdater, keeps saying error getting cia file info result: 0xD900182F ,

 

[Plailect]

When i try to downgrade emunand with sysupdater, keeps saying error getting cia file info result: 0xD900182F ,

Wait for v2 of the guide, coming soon!

 

[Classicgamer]

Some notes from my experience: N3DS Europe (AUS unit) (no hard mod but I'm capable of doing hard mods)

I went in fresh with the stock 4gb micro sd card. I wasn't about to play around with my filled up 128gb emunand monster lol! so I had to create title/import dbs for the issue in the next step since I had a formatted sysnand and created a new gw emunand.

While following the guide exactly when I reached section II downgrade step 8) I found that sysupdated failed to downgrade when using browserhax. So I booted up my GW and installed sysupdater cia. Then I booted back into ReiNand and using the cia it allowed me to downgrade. I'm sure it has to do with permissions and such

Downgrade was successful on first try.

as others noted step 15 of section 2 requires the exact file name - should be .xorpad. I also ran cmd as admin - just in case you don't know if you have to - doesn't hurt!

the hex editing is easy as pie. if you have any experience with a hex editor you can do it easily - my only experience with hex editing has been emulator save state hacking

restoring nand went smooth - made me a little anxious since this is the point of no return! upon rebooting the system it black screened. I tried again - nothing.... my heart sank...

I removed the micro sd card and tried w/o it and it booted up!

I followed section III and all worked according to plan - I didn't see any flashes but a rapid scrolling effect on the bottom screen. I waited a minute of that and then shut down. I opened my micro sd and there it was! a9f.bin 256byte file.

to restore:

I copied decrypt9's launcher.dat just in case - I didn't know if it was needed or not because I followed the browser restore files from https://gbatemp.net/threads/otp-guide.415140/page-19#post-6084203
download the arm 9 and 11 bin files from there and put them on the sd card. I went to http://dukesrg.github.io/2xrsa.html?arm11.bin and arm11.bin booted. the lower screen became a garbled mess of random colors for about 10 seconds or so. then decrypt9 menu loaded! I went ahead and restored sysnand through the menu options and my system is back to normal!

the process was relatively smooth - all the brick warnings, while justified, made me more nervous than the actual procedure!

thank you to all the people listed in the credits @ https://plailect.github.io/OTP/

Thanks for reading my story - hopefully it will calm you down and motivate you to get it done!

 

[ZeroShift]

Restoring sysNAND to 2.1, wish me luck.

 

[Just Passing By]

Wait for v2 of the guide, coming soon!

How soon

 

[Plailect]

How soon

 

[ZeroShift]

So downgrade went fine, but Cubic Ninja is giving me issues.

After scanning the QR code the screen goes black and freezes. When I check OTP.bin it's still empty, should I wait a certain amount of time or did it bork?

 

[laramie]

So downgrade went fine, but Cubic Ninja is giving me issues.

After scanning the QR code the screen goes black and freezes. When I check OTP.bin it's still empty, should I wait a certain amount of time or did it bork?

n3ds or old?

 

[ZeroShift]

n3ds or old?

New. I used the Spider method and got a9f.bin, hopefully it's the same thing.

 

[runetoonxx2]

so apparently everyone got the downgrade working at least welp time to do this myself in like 6 hrs cause its midnight and i dont wanna fk up cause im half asleep

 

[laramie]

New. I used the Spider method and got a9f.bin, hopefully it's the same thing.

format you system. IT wont brick no worries. It'll just never start. Let that go for a few mins. then turn off the 3ds and try again.

 

[daxtsu]

Downgraded my N3DS to 2.1 as well, got OTP, and restored back to 9.2 with no issue (and no hardmod, but I was rather nervous). Thanks for the guide.

Spoiler

 

[urherenow]

When i try to downgrade emunand with sysupdater, keeps saying error getting cia file info result: 0xD900182F ,

Install sysupdater.cia and run it from the home screen.

EDIT: Nevermind if you saw my confusion with a9f.bin. I figured out that it's a non-Cubic Ninja method, and that I was confusing hex with dec (as far as the size of the key)

 

[stl25]

I used gateway to install sysupdater cia to emunand. Do I have to reboot or can I downgrade emunand in gateway mode using sysupdater?

 

[qlm2009]

Is there any news regarding the 2.1 firmware pack for JAP N3DS?

 

[AkGBA]

Can't wait to do it. But if I understand correctly, 2ds users should wait, right ? But wait for what exactly ?

 

[Svaethier]

Can't wait to do it. But if I understand correctly, 2ds users should wait, right ? But wait for what exactly ?

For a better and safer way to downgrade and upgrade again without bricking.