Latest Samsung firmware
This page lists every official firmware Samsung has released for the Samsung SM-G930R6, newest first. The latest build is G930R6WWSBCTA1 for Bluegrass Cellular (LRA) (Android 8.0.0, built 7 January 2020). Pick your country or carrier to see the builds for your region, then open a firmware to download it for free or at full speed with a Premium account.