Yes, Yamaha Expansion Manager is completely free software.
Click on your instrument under Install Target . You will see a visual memory bar. Click on individual packs to check or uncheck specific voices or styles. Green means the content fits; red means you have exceeded your keyboard's wave memory limit. Creating the Installation File Yamaha Expansion Manager 2.7.0 Download
Below is a concise, practical guide explaining what’s new in 2.7.0, which instruments it supports, how to prepare, how to download and install, troubleshooting tips, and best practices for managing expansions. Yes, Yamaha Expansion Manager is completely free software
Before you can install packs on your keyboard, YEM needs to know your specific instrument model: which instruments it supports
Managing "Instrument Info" files and memory limits can still be a bit technical for casual users. Where to Download