Nds-bios-arm7.bin 'link' -

The path to using it correctly is simple but firm:

The nds-bios-arm7.bin file contains the boot instructions and low-level system functions specifically for that secondary ARM7 chip. Without it, an emulator might struggle to process audio correctly or fail to recognize touch inputs in certain games. Why Do You Need It? Nds-bios-arm7.bin