Place biosdsi9.rom , biosdsi7.rom , and dsi_nand.bin into your main . Open melonDS , go to Config -> Emu settings -> DSi mode .
: Files are often placed in the main directory or a designated bios folder of the emulator.
); incorrect sizes or "bad dumps" will cause the emulator to fail when launching in DSi mode. Accompanying Files: biosdsi9.rom
The biosdsi9.rom is the "brain" of the DSi's ARM9 processor. For fans looking to experience the full library of the Nintendo DSi on their PC, this file is the indispensable key to accurate, high-performance emulation.
Before you even consider flashing biosdsi9.rom , perform these checks: Place biosdsi9
: Emulators almost always require this file to be placed in the same directory alongside its sibling files: biosdsi7.rom (the ARM7 BIOS) and a valid copy of the console's internal operating system, usually named nand.bin . Emulator Files & BIOS Downloads - Emulation General Wiki
Change the "Device Type" from "Auto" or "DS" to "DSi" . Pathing: Go to Config > Path Settings . ); incorrect sizes or "bad dumps" will cause
: The legitimate way to obtain this file is to "dump" it directly from your own physical Nintendo DSi console. This involves installing custom homebrew firmware on your DSi and using a software tool to extract the internal BIOS files onto an SD card. 🛠️ Common Troubleshooting