Nintendo Dsi Custom Firmware

Initial publication: March 16th, 2015

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Nintendo Dsi Custom Firmware Downloads

NitroHax cheat tool for Nintendo DS games, ported to Nintendo DSi / 3DS and modified to load from a usrcheat.dat database Version: 0.100 Last updated: 2021-01-11. In this video I will show you how to install HiyaCFW and Twilight Menu on any DSi console running Official Firmware 1.4.5.XRequirements:DSi console with Of.

Some time ago I experimented with making my own custom firmwares for the Nintendo DS.

The DS firmware is stored on a 256KB rewritable flash memory chip (NVRAM).

NVRAM can be rewritten via the SPI bus on ARM 7, and in pages (256 byte chunks) only.

libnds provides abstractions for writing to NVRAM (source/arm7/firmware.c), however, the writeFirmwarePage function is declared static, so you can't access it. You must either remove the static qualifier and recompile the library, or just copy the function to your project.

There is a small section at the end of the firmware which stores your username, birthday, WiFi settings, etc, that can be rewritten freely. However, the rest of the firmware (containing the ARM 7 and ARM 9 binaries, and additional data) is protected and can only be rewritten whilst the SL1 terminal is shorted.


Getting code flashed to the firmware

If you have a hardware flasher like darkfader does, you can directly flash data to the NVRAM chip.

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Since I didn't, I injected my custom firmwares into FlashMe, and used the modified installer to flash my firmwares for a while, but this was just a temporary solution.

I then updated Olimar's hbfirmware to be compatible with the latest versions of libnds and devkitARM instead. This worked, but was very messy code, and sound and text didn't work (so I had no idea when flashing was complete).

Finally, I wrote my own firmware flashing tool from scratch (fwManager). This tool allows you to store multiple firmwares on your flashcard under the /firmwares directory, and flash them easily (without having to recompile an installer).

I could now flash my own code to the firmware!

Nintendo Ds Custom Firmware


Wireless controller CFW

Since I didn't think I'd be able to make anything better than the stock firmware, I went with a different approach, and tried to turn an old DS into a wireless gaming controller. The results are pleasing!


Why 100% Of The DSi Tutorials Let You Install Hiya CFW AND ..

Modifications to the original firmware

There is something deeply satisfying about adding some personalisation to your systems, even if it is just a minor text change (changing the carrier name of an iPhone for example).

There are 5 sections to the official DS firmwares, which are concealed behind compression and encryption, and are verified with checksums.

Fifa 19 cheat table 2.0. My main sources of code for extracting and injecting data from the firmware were fwunpack by Chishm, and Lick's firmware tool; which in turn, take code from VisualBoyAdvance, hbmenu, and probably others.

It was difficult to understand how most of it worked since they rely extensively on reverse engineered code (probably generated with Hex-Rays Decompiler).

In addition, most of the process is fairly cryptic anyway. Take a look at this for example:


Even after giving everything meaningful names, it is still somewhat confusing:

Nintendo Dsi Custom Firmware List


After clobbering together lots of code from lots of different places, I was eventually able to extract and inject data into the gui section (part 5) of the firmware. I open sourced it on GitHub: guiTool.

From there, I modified the 'Touch the Touch Screen to continue' text. Tested that my firmware worked with DeSmuME, and eventually flashed it to firmware of a real DS using fwManager.

Now that the preparation work is out of the way, we're finally ready to launch custom firmware on the Switch.

Unlike systems such as the DSi, Wii, or 3DS, Switch CFW is currently volatile- it will only work as long as your Switch is on. As soon as your Switch completely loses power for any reason (shutting down, battery dying, etc.), CFW will no longer be active and you will need to follow these instructions again.

Keep emuMMC offline at all times

You should keep your emuMMC(emunand) offline (or with 90dns) at all times. Not doing this will likely result in a ban

Instructions

  1. Power on your Switch into RCM, and inject the Hekate payload
  2. Navigate to Launch using the touch screen
  3. Find Atmosphere FSS0 EmuMMC and launch it

Nintendo Dsi Custom Firmware Free

Your Switch is now booting into Atmosphere.

To verify Atmosphere launched properly, open the Settings applet, and navigate to System. You should see AMS next to the version number, as well as an E at the end, indicating you are booted into emuMMC.

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Dsi[Tutorial]

Launching the Homebrew Menu

You will now be able to launch the Homebrew Menu by opening the album or by holding the R button while launching any game (including demos/cartridges), or application (e.g. Youtube/Hulu). If R is not held, the game or application will launch like normal.

A note about using the album for the Homebrew Menu

  • Using the album for the Homebrew Menu instead of a game or application has several limitations, including but not limited to: a smaller amount of available memory (RAM), as well as being unable to launch a full-featured web browser. It is strongly recommended to launch homebrew through applications or games instead. If your games don't show up as 'installed' on your switch, copy the contents of the Nintendo folder from the root of the sd card to the emummc/RAW1/Nintendo folder

Adding new applications

  • Place homebrew applications (.nro files) into the switch folder on your SD card.
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What the included homebrew applications do

  • Checkpoint is a save manager, it can dump and restore saves from/to your system. For more information, see Save Management

  • FTPD is a ftp tool for connecting your Switch's sd card wirelessly to your pc. Tools like Filezilla can connect to your switch on (ip of switch):5000

  • NX-Shell is a file explorer for the Switch. You can move files, listen to mp3's, view images etc.

  • NXThemeInstaller is a theme installer app. See the Theming section of our guide for more information

  • hbappstore is a homebrew app store where a large collection of switch homebrew is kept.

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