Hello Donny
I made for Yamaha de Mexico a video tutorial on how to install the expansion packs, at the time, I used the PSR S975, BUT, the process is the SAME.....now you have to press also the MENU Button and go to page two....
I was ask to do it in Spanish, but, I added Subtitles in English....here the link
You will need a USB Drive and of course, either a PC or Mac, and download the Free Yamaha Expansion Manager, the newest version, 2.53
https://www.youtube.com/watch?v=1MshiKEpDcU&t=27sIf you follow the process step by step, you will have wherever packs you want to install in the keyboard.
Let me know if it helps.
Manuel