Click on the tab (or DS mode if using standard files). Check the box that says Enable DS/DSi ARM7 BIOS . Browse and select your verified bios7.bin file. Do the same for bios9.bin and firmware.bin , then click OK . Open No$GBA and go to Options > Emulation Setup .
For absolute compatibility, a is the best option. DSi BIOS files are backward compatible with standard DS games, and they allow emulators like MelonDS to boot into the exclusive DSi Menu and utilize enhanced DSi hardware features. How to Verify a Healthy BIOS File (MD5 Checksums) dsi bios7bin best
Even with the best files, things can go wrong. Here is how to fix the most common issues: Click on the tab (or DS mode if using standard files)
Leaving original suffix labels or capitalization errors intact will cause software engines to completely overlook the directory path. Do the same for bios9
The gold standard. A program you run on a real Nintendo DSi or DS (via flashcart) to dump your own legal BIOS files.