After 1.4.5, support for the DSi was officially discontinued. The Nintendo DSi Shop itself was shut down on March 31, 2017, meaning you can no longer purchase or download new DSiWare, though you can still redownload previously purchased titles if you can connect to the server.
Because the DSi receives updates exclusively over Wi-Fi, there is no direct file to download from Nintendo’s website. However, you can still trigger the update process on your console. Here’s the exact process for performing the official and update.
System updates are, or were, downloaded directly to the device via an internet connection. These updates could add new features (like Facebook integration), resolve bugs, and enhance overall system performance. Nintendo also used updates as a primary means to block unauthorized software and "flashcarts," which we'll touch on later. Crucially, each new update always included all changes from every previous version, meaning a user only needed to download the latest one to be fully up-to-date. Nintendo Dsi Firmware Download
: Select "Yes," followed by "Next" and "I Accept" to begin the download.
The DSi’s native update routine does not read firmware files from the SD card slot. The only official update path is via Nintendo’s servers. After 1
An SD card (Standard SD or MicroSD with an adapter, ideally 32GB or smaller, formatted to FAT32). A computer with an SD card reader. Step 1: The Memory Pit Exploit
The key point, however, is that the official firmware updates for the DSi have been discontinued by Nintendo. The last official update was released in December 2012, version 1.4.5. This means you cannot simply go to a website and download a firmware file to your computer to manually install via USB. The DSi was designed to update solely over the internet via a Wi-Fi connection. However, you can still trigger the update process
TWiLight Menu++ is an open-source DSi menu replacement. It mimics the interface of the DSi, 3DS, or Sega Saturn and acts as a frontend for running: DSiWare backups Nintendo DS ROMs directly from the SD card
Many shady websites rank high for “Nintendo DSi firmware download” by offering .exe files or survey-locked archives. Never download or run these on your computer. The DSi update process was never meant to involve a PC.
Hold while turning the DSi back on to enter the Unlaunch file menu.