If you have a legitimate need for SeedDB.bin (e.g., you dumped your own cartridge and need a seed), here is the only recommended method:
As the 3DS receives updates, changes in the seed database may be required to maintain compatibility with new software. 3ds seeddbbin extra quality
By optimizing seeddbbin, developers can potentially streamline the encryption and decryption process, leading to faster loading times and reduced lag in games. If you have a legitimate need for SeedDB
: Instead of needing a separate seed for every game, a single seeddb.bin can contain all known seeds for the entire 3DS library. How to Obtain or Generate it You generally have two ways to get a working seeddb.bin : 3ds seeddbbin extra quality