Latest Samsung Galaxy S5 mini (SM-G800A) - ATT firmware
Samsung Galaxy S5 mini (SM-G800A) firmware for USA (AT&T) (ATT): 1 build in the SamMobile archive, newest first. The latest is G800AUCS3BOJ9 (Android 5.1.1, built 28 December 2016). Open a build to download it, or switch region with the country selector.