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|type = [[:Category:ConsolesHandheld consoles|Handheld game console]]

 Released on April 5, 2009, the '''[[wikipedia:Nintendo DSi|Nintendo DSi]]''' added new lighting effects, an inner and outer 0.3 megapixel digital cameras, 16MB of RAM (compared to the previous 4MB of RAM), a faster ARM9 CPU clocked at 133 MHz, and offered downloadable titles called "DSiWare". It cost {{Inflation|USD|169.99|2009}} at launch and later dropped to {{Inflation|USD|149.99|2010}}. The system, however, was region-locked, meaning that DSi exclusives from different regions couldn't be used and the system language couldn't be changed. It also did away with backwards-compatiblity by removing Slot-2 which was used to load GBA cartridges and other gaming certain accessories (''i.e. Guitar Hero: On Tour''such as the Rumble Pak).

!colspan="78"|PC / x86|-|[[melonDS|melonDS]]|align=left|{{Icon|Windows|Linux|macOS|FreeBSD}}|[http://melonds.kuribo64.net/downloads.php {{MelonDSVer}}] [https://github.com/Arisotura/melonDS/actions <br/>Dev Builds]|{{✓}}|{{✓}}|{{✓}}|{{✓}}|{{✓}}

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!colspan="8"|Mobile / ARM|-|[[melonDS|melonDS]]<small> (unofficial)</small>|align=left|{{Icon|Windows|LinuxAndroid}}|[httphttps://melondsgithub.com/rafaelvcaetano/melonDS-android git] [https://play.kuribo64google.netcom/store/apps/comments.phpdetails?id=103 alphame.magnum.melonds 1.7.0]|{{~✓}} |{{✓}}|{{✗✓}} ||{{~✓}} ||{{~✓}} <small>([http://melonds.kuribo64.net/comments.php?id=94 WIP])</small>

There hasn't been much of a need for DSi emulation has been pretty neglected due to it's its small library of exclusive games and lack of DSi-enhanced titles that provide anything major besides camera support. The only thing really notable is DSiWare, which saw several exclusive releases.

No$GBA added support for DSi games of all three formats starting with version 2.8, although some games won't boot and others have graphical glitches. You'll need to enable "16MB DSi/retail" under the settings in order to use it. Compatibility is very iffy due to No$GBA's already poor DS emulation, and the camera is just spoofed as a static image and will causes cause the emulator to crash whenever used, meaning games that uses it may boot, but won't be very playable.

As of version 0.9, melonDS recently started attempts at has DSi emulation and has been able . It can connect to boot the system's firmware<ref name="melonDSi">http://melonds.kuribo64.net/comments.php?id=94</ref> internet and even showed that it can play ''Flipnote Studio''games with WFC online using libslirp or libpcap. While still outclassed by No$GBA, it It could become the most usable option for DSi emulation in the near future. Most of it is being done using the documentation that the No$GBA devs have dev has already compiled on the subject<ref>http://melonds.kuribo64.net/board/thread.php?id=13</ref> ([https://problemkaputt.de/gbatek.htm GBATEK]).

All three formats can be converted to <code>.nds</code> format. Compared to regular DS games, DSi games have some additional header information that wasn't even correctly dumped in most early sets. The 2017 set has Recent sets have since updated many of these to the correct format, though it's still severely lacking in DSiWare exclusives. DSiWare dumps can exist in both <code>.nds</code> format and <code>.cia</code> format (for installation on a homebrewed 3DS).

On the DSi/3DS family of handhelds, the first two formats can be played on some select DSi-compatible flashcarts like the discontinued and expensive CycloDS iEvolution flashcart(which won't work on a stock 3DS unless you install custom firmware to whitelist it). As for the third type, some are only available for digital purchase at the 3DS eShop and are installed as apps to the limited TWL NAND. Users with custom firmware can also convert DSiWare to an installable <code>.cia</code> and even dump already installed ones back to <code>.nds</code>. Since the DSi Shop has closed, the only way of obtaining DSiWare on the physical system is by [[Modding Consoles/Flashcarts#Nintendo_DSi|homebrewing]] your DSi and either [https://dsi.cfw.guide/installing-dsiware| installing] it to the system's NAND, or launching the <code>.nds</code> ROM through Unlaunchor [[TWiLight Menu++]].

DSi emulation requires a copy of the lower 32K-halves of the ARM7/ARM9 BIOS files (<code>BIOSDSI7.ROM</code> and <code>BIOSDSI9.ROM</code>), which are different from the regular DS BIOS files and needed for the decryption. All melonDS also requires these files along with the regular DS BIOS and the needed files are <code>bios7i.bin</code>, <code>bios9iDSi's firmware.bin</code>, <code>BIOSDSI7.ROM</code>, <code>BIOSDSI9.ROM</code>, <code>BIOSNDS7.ROM</code>, and <code>BIOSNDS9.ROM</code>. These unicorns can be found [http://archive[Emulator_Files#Nintendo_DS_.org/details/DSiFirmwareFiles 2F_DSi|here]].

It's also advised (but still completely '''optional''') to use a NAND dump as well for No$GBA to increase compatibility (though adding games is more complex, and however a soft-modding solution to NAND dump it is still being worked on). Rename it to "DSi-1.mmc" (should be about 250MB). In No$GBA, change ''"Reset/Startup Entrypoint"'' to ''"GBA/NDS BIOS"'' to now boot the emulator and games in DSi mode. Hex editing is required in order to "install" new DSiWare titles. Using a NAND dump fixes a lot of glitches and crashes related to languages and use of the internal DSi fontmelonDS.

* [https://mega.nz/#!qBY0DAJa!18nfxczgF-JxqyFxSogfej7G23vYSjJnQCIh_tdXUq0 Modified NAND]: Includes Unlauncher (Hold A to boot it, but not needed) and [[TWiLight Menu++]]

The latest dev builds of melonDS can also boot the DSi Menu, and wifi support is being worked onload most DSiWare.To boot up the DSi Menu, you need specific files which can all be found [https://emulation.gametechwiki.com/index.php/[Emulator_Files#Nintendo_DS_.2F_DSi on this page|here]].]

===MelonDS===MelonDS doesn't support DSiWare yet.===NONo$GBA===

* ''Wifi doesn't work.'' Unimplemented.* ''Touch Screen issues related to Screen Calibration'' (DSiWare + TwilightMenu [[TWiLight Menu++]] or simple nds loading) The fix is to load the original DSi Home Menu first (holding B when resetting the emulator or loading it), then reset to TwilightMenu TWiLight Menu++ (not holding any buttons) before loading the desired game.* ''Can't Save'' (DSiWare + simple nds loading) This method is hardware inaccurate to begin with. For best results, switch to TwilightMenu [[TWiLight Menu++]] or Original NAND methods.===melonDS===melonDS doesn't support some of the DSi's features such as the cameras and DSP. DSiWare have to be launched from the NAND as it cannot boot them as .nds.

[[Category:Nintendo DS DSi emulators|*]]