seeddb.bin file is a database used by 3DS tools to decrypt and install newer games (released after 2015) that utilize "Seeds" for security. You typically "produce" or generate this content by extracting data from your own 3DS console using or specialized conversion tools. Ways to Produce a seeddb.bin Using SEEDconv (PC Method) : You can generate a seeddb.bin
3ds-seeddb add --cia-dir ./cias/ --seeddb ./seeddb.bin --keys boot9.bin 3ds seeddb.bin
Instead of your console calling home to Nintendo for permission to decrypt a game, you place seeddb.bin on your SD card. When Luma3DS (or another CFW) sees the file, it reads the seeds directly from the card and feeds them to the game. seeddb
Understanding seeddb.bin for the Nintendo 3DS In the Nintendo 3DS homebrew community, seeddb.bin When Luma3DS (or another CFW) sees the file,