Latest Samsung firmware
This page lists every official firmware Samsung has released for the Samsung SM-J327A, newest first. The latest build is J327AUCS5BSI1 for USA (AT&T) (ATT) (Android 8.1.0, built 11 September 2019). 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.