Nintendo Dsi Firmware Download [updated] Review
While the Nintendo DSi Shop has officially closed its doors, you can still update your system firmware directly through the console as long as you have a stable internet connection.
: Ensure your DSi is plugged in or has a full charge before starting any update to prevent the system from shutting off mid-process. Nintendo Dsi Firmware Download
A stable Wi-Fi connection. Note that many modern routers use WPA2/WPA3 security, which the DSi may not support for older DS games, though the system itself supports WPA/WPA2 for its own functions. Verification: While the Nintendo DSi Shop has officially closed

