[Encrypted Game File] + [Title ID Seed from SeedDB] ➔ [Decryption Key Generated] ➔ [Game Boots Successfully]
The safest and most legitimate way to acquire your seeddb.bin file is by dumping it directly from your own Nintendo 3DS console running custom firmware (such as Luma3DS). Step-by-Step Dumping via GodMode9 3ds seeddbbin extra quality