1) Plug the USB flash drive containing your sound expansion files into the USB host port on your FR-8x accordion
2) Go to the Utility menu. It is menu 15.
3) once in the Utility go to the Expansion Sound menu which is 15.10
4) in this menu choose the location you want to load the sound files. There are 4 possible "slots" for loading expansion sounds. It will say press write once you chose the file location. This will load the .bin file containing the sounds.
5) Next you will have to load the sound sets on the USB flash drive into the FR-8X user programs. Go to the import Menu 15.8.
6) In the Import menu choose import as individual FR-7X set. Load each set on the USB flash drive individually. You will also need to choose the User Program location for each set. Before you begin you should make sure you know which user programs are available. Press write and it would load the set to the user program location you chose.