1. Remove Your old flash plugin (if You have it) dnf remove flash-plugin 2. Add rpmfusion repo http://rpmfusion.org/Configuration 3. Install converter dnf update dnf install freshplayerplugin 4. Go to: https://get.adobe.com/flashplayer/otherversions/ [http://get.adobe.com/flashplayer/otherversions/] and chose FP 23.0 for.