. This file contains the encryption "seeds" needed to decrypt and install newer 3DS titles. How to Get a Working seeddb.bin

The .bin extension appears in several legitimate 3DS contexts. If you are looking for seeddbbin , you probably need one of these:

In the Nintendo 3DS homebrew community, seeddb.bin is a critical database file required for decrypting and installing newer 3DS games (typically released from 2015 onwards) that utilize seed-based encryption