If you cannot dump your own BIOS, consider these options:
That being said, here are some general guidelines and potential sources for DSI BIOS files: dsi bios files download link
While the temptation to find a “DSI BIOS files download link” is understandable for retro gaming fans, the legal and ethical path is to dump your own BIOS from hardware you own. This preserves the spirit of emulation—protecting and enjoying classic games lawfully—while respecting the work of developers and publishers. If you cannot dump your own BIOS, consider
: A collection that often includes verified BIOS files for various handheld systems including the DS family. : A Nintendo DSi with Custom Firmware (CFW) and an SD card
: A Nintendo DSi with Custom Firmware (CFW) and an SD card. Tools : Use dsibiosdumper or dsbf_dump . Process : Place the .nds dumper file on your SD card root. Launch the tool through your DSi's homebrew menu. Follow the on-screen prompts to dump the BIOS and firmware.

Lou S. Felipe, Ph.D. (she/they) is an assistant professor at the University of Colorado School of Medicine, where she provides culturally responsive, trauma-focused psychotherapy. Her research examines the intersectional identity experiences of marginalization, particularly at the intersection of race, ethnicity, gender, and sexuality with a unique specialization in Pilipinx American psychology.