For XP8, you can download and install App Updater from the Google Play™ store.  Just search for “SCOUT App Updater”. Once installed, App Updater will be available under SCOUT -> Setup -> App Updater.  For XP3 and XP5s, you can ensure you have the latest version of App Updater by running SCOUT App Updater (SCOUT -> Setup -> App Updater -> Check for Updates).