A (often named nand.bin ) is a raw, sector-by-sector dump of that chip. It contains the entire filesystem and firmware. Emulators like melonDS use this dump to replicate the exact behavior of a real console, including boot sequences, settings, and DSi-exclusive features.

: By keeping food production and distribution local, Nandbin Melonds aims to boost local economies. This model supports small-scale farmers and producers, ensuring that the community benefits directly from their labor.

to enable authentic console emulation, typically requiring a complete, non-corrupted 240MB file. More information can be found at the official melonDS documentation.

You download a valid NAND.bin legally. It must be dumped from your own DSi console using homebrew software like: