This file contains all files (binaries and data) in http://repo.orix.oric.org/dists/official/tgz/6502/
you can download the file here : http://repo.orix.oric.org/dists/official/tgz/6502/sdcard.tgz
You need to download this file, and you can use (tar/gzip to uncompress or 7z under windows to uncompress) all files must be copied in the root folder of the sdcard.
In that way, you will have all files needed to use the board.