Performance tip: 3DS emulation on Android is demanding. A Snapdragon 845 or newer is recommended for full speed.
Whether BIOS or firmware dumps, the law is clear: Distributing or downloading copyrighted system files without permission is illegal. The 3DS boot ROMs and proprietary code belong to Nintendo. Creating backups of your own console for personal use may fall under fair use in some regions, but downloading them from the internet does not. lemuroid 3ds bios
Lemuroid respects this by not bundling or requiring any proprietary Nintendo files. Performance tip: 3DS emulation on Android is demanding
If you’re an advanced user and have legally dumped your 3DS’s boot9.bin and boot11.bin, you can place them in Lemuroid’s system folder—though this is unnecessary for most games. The process requires digging into Android’s internal storage (e.g., Android/data/com.swordfish.lemuroid/files/system/). But again: not required. Whether BIOS or firmware dumps, the law is