If you have dumped your own system files or keys, here is how to set them up in popular Android emulators:
: Files found on random "BIOS download" sites often contain malware or are corrupted. 2. When You Actually Need "Keys" 3ds Emulator Bios File Download For Android
What do you have? (This helps determine which graphics settings to use.) If you have dumped your own system files
: Currently the most recommended 3DS emulator on Android, merging the best features of Citra and Lime3DS with optimizations for modern mobile GPUs. 3ds Emulator Bios File Download For Android
The BIOS won't fix lag. Performance is tied to your phone's Snapdragon or Exynos processor.