Homebrew DSi Downgrading - The Complete Guide

zoogie · Jul 31, 2015

Gadorach said:
The Biggest Loser, as an exploit game, is used exclusively for recovering your DSi's CID. The CID, or Chip Identification number, is used as part of your NAND's encryption, and is one of two parts of the encryption key. You can also recover the CID with a Raspberry Pi when you install your NAND reader. There's a few ways to get it, using "The Biggest Loser" is just one of them.

It's also easier and cheaper. The advantage of the Raspi method is, well, you get a raspi out of the deal which is usable for many other things other than just the dsi cid. Biggest Loser isn't that sexy of a homebrew loader with it's 8KB of memory.

And Feroz, the prices I mentioned were just a reference, but Loser should be cheap in your neck of the woods as well.

Feroz El Mejor · Jul 31, 2015

zoogie said:
It's also easier and cheaper. The advantage of the Raspi method is, well, you get a raspi out of the deal which is usable for many other things other than just the dsi cid. Biggest Loser isn't that sexy of a homebrew loader with it's 8KB of memory.

And Feroz, the prices I mentioned were just a reference, but Loser should be cheap in your neck of the woods as well.

Then if I buy that game I don't need to mod the DSi? Because I have an European Guitar Rock Tour installed...

zoogie · Jul 31, 2015

Feroz El Mejor said:
Then if I buy that game I don't need to mod the DSi? Because I have an European Guitar Rock Tour installed...

The game just dumps your CID, which is part of the puzzle to decrypting your firmware. You still need the hardmod to dump your firmware and write it back -- the CID only helps in decrypting it so you can modify it. This is unless somehow you are on firm 1.4.1 or less and you can just freely write your grtpwn modded dsiware export back and forth. Speaking of which...

Can I ask a favor, can you go ahead and install GRTpwn and get the hack save? Instructions are in my sig

Been waiting forever for it.

Feroz El Mejor · Jul 31, 2015

zoogie said:
The game just dumps your CID, which is part of the puzzle to decrypting your firmware. You still need the hardmod to dump your firmware and write it back -- the CID only helps in decrypting it so you can modify it. This is unless somehow you are on firm 1.4.1 or less and you can just freely write your grtpwn modded dsiware export back and forth. Speaking of which...

Can I ask a favor, can you go ahead and install GRTpwn and get the hack save? Instructions are in my sig Been waiting forever for it.

Sorry, but I have the DSi on the 1.4.5, If one day the scene can dump that without a hardmod I do the GRTpwn.

zoogie · Jul 31, 2015

Feroz El Mejor said:
Sorry, but I have the DSi on the 1.4.5, If one day the scene can dump that without a hardmod I do the GRTpwn.

You can inject the save and dump it without any hardmod. Just download the app here:
http://bootmii.org/dsiexploits/downloads/
1. drag and drop your guitar rock tour dsiware export on the injectrawsav.exe file
2. then take the modified dsiware export and drop in on the attachment here

This will extract the save and your done. Two simple drag and drops. You can delete the dsiware export afterwards, it won't hurt anything.

Feroz El Mejor · Jul 31, 2015

zoogie said:
You can inject the save and dump it without any hardmod. Just download the app here:
http://bootmii.org/dsiexploits/downloads/
drag and drop your guitar rock tour dsiware export on the injectrawsav.exe file
then take the modified dsiware export and drop in on the attachment here

This will extract the save and your done. Two simple drag and drops. You can delete the dsiware export afterwards, it won't hurt anything.

I put my GuitarHeroTour.nds into injectrawsav and that give me a file named "dlstream_7fe8f97230fc587bc31de1f9d66220cd179fcc59.bin", later I put that file into dsi_sav_extract but it crashes to me, what I'm doing wrong? I feel that im doing this wrong...

CTurt · Jul 31, 2015

zoogie said:
It's also easier and cheaper. The advantage of the Raspi method is, well, you get a raspi out of the deal which is usable for many other things other than just the dsi cid. Biggest Loser isn't that sexy of a homebrew loader with it's 8KB of memory.

And Feroz, the prices I mentioned were just a reference, but Loser should be cheap in your neck of the woods as well.

FIFA 11 has 64KB of memory. Although it doesn't have access to the SD card, it may be possible to port a WiFi loader to it.

Technicmaster0 · Jul 31, 2015

CTurt said:
FIFA 11 has 64KB of memory. Although it doesn't have access to the SD card, it may be possible to port a WiFi loader to it.

I thought that there was a WiFi Loader? http://davejmurphy.com/tag/nintendo-dsi/

reprep · Aug 1, 2015

Kelton2 said:
Do I actually need a physical copy of that game or can I use my DSTWO (I'm guessing I need a physical copy ) (By the way, my DSi is on 1.4.1U but I don't have any exploitable games installed.... is there any other way?)

you need a physical copy as DSTwo starts the game in DS mode, not the needed DSi mode.

Gadorach · Aug 1, 2015

Kelton2 said:
By the way, my DSi is on 1.4.1U but I don't have any exploitable games installed.... is there any other way?

At present, there is no other way. When you're done though, you'll basically be on 1.4.1, but with DSi Shop access, and almost no blocked flashcarts.

atkfromabove · Aug 2, 2015

Gadorach said:
Considerably. Just install RPU (the 3DS unbricker) and run it in "(S)afe mode (Query only)". It'll output the CID onscreen, and you can then bit-flip it and use it with TWLTool.

Would you know of a way to do this with the Raspberry Pi 2? I can't get the RPU to boot. I may have the wrong files.

Gadorach · Aug 2, 2015

atkfromabove said:
Would you know of a way to do this with the Raspberry Pi 2? I can't get the RPU to boot. I may have the wrong files.

I don't think RPU is compatible with the rPi2, so you'll need a v1, or a copy of The Biggest Loser. Unless, of course, you'd like to port the relevant parts of RPU to the rPi2.

atkfromabove · Aug 2, 2015

Gadorach said:
I don't think RPU is compatible with the rPi2, so you'll need a v1, or a copy of The Biggest Loser. Unless, of course, you'd like to port the relevant parts of RPU to the rPi2.

I've been looking at the differences between the the first and second versions. I'll see what I can do. I've got it working till the point of running 3dsunbrick but I am having trouble crating the kernel without loading mmc / sd

Gadorach · Aug 2, 2015

atkfromabove said:
I've been looking at the differences between the the first and second versions. I'll see what I can do. I've got it working till the point of running 3dsunbrick but I am having trouble crating the kernel without loading mmc / sd

Considering most of the parts are the same in the rPi2, it might be as simple as forcing RPU to run on a single thread. It's possible the code is being automatically multi-threaded by the rPi2, and crashing due to timing errors or something.

Margen67 · Aug 13, 2015

What can I do with only a flashcart?

Deleted-369620 · Aug 14, 2015

Is a 30W soldering iron good enough?
Is there a place to buy 5 dollar nintendo card's I can only find 10 dollar ones?

loco365 · Aug 14, 2015

Margen67 said:
What can I do with only a flashcart?

Basically nothing. You need a DSi-mode game to get the appropriate keys, as well as a hard mod to inject the exploitable software.

xiiflowx said:
Is a 30W soldering iron good enough?
Is there a place to buy 5 dollar nintendo card's I can only find 10 dollar ones?

I think $10 is the lowest card you can get.

Deleted-369620 · Aug 14, 2015

Is 30AWG like 0.2mm and is nintendo club still in use so I can get the points for stars?

marc00077 · Aug 27, 2015

Hi everyone, I'm looking forward to downgrade my dsi for hombrew but I don't get one thing: I understand that I have to download a game that is compatible with this hax, it says he recomends sudoku but I've readed that the sudoku app was patched... Sb explain me please

nocash123 · Aug 27, 2015

The term 'patched' is a bit confusing. It means that Nintendo is selling a new 'patched' sudoku version in DSi shop, which is no longer allowing to play homebrew. Basically that's making it useless to buy the game since you'll just need to replace it by the older 'unpatched' sudoku version.
You might still want to buy it for two reasons: It's tendencially more legal when buying the game. And, when buying it, the DSi shop is probably somewhere registering sudoku as installed title (so it will show up in system menu) (not sure on that, but I would assume that it won't show up if it isn't registered in the system menu .sav file, or in the wrap.bin file).

Btw. is Sudoku really the best choice? When starting it, it's hanging for about 1 second in a White screen, then it's hanging for another second in LicensedBy screen, and then it's coming up with an entirely useless TouchToStart screen, and thereafter, after touching, it's finally letting you to boot your homebrew stuff.
I think there are around 4-5 other exploitable games. Are any of them booting faster... or are they even worse, with more delays, or requiring you to navigate through some menues before booting homebrew?

Homebrew DSi Downgrading - The Complete Guide

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