Latest Samsung Galaxy Tab S2 9.7 (SM-T818A) - ATT firmware
Samsung Galaxy Tab S2 9.7 (SM-T818A) firmware for USA (AT&T) (ATT): 1 build in the SamMobile archive, newest first. The latest is T818AUCS4BSG4 (Android 7.0, built 29 July 2019). Open a build to download it, or switch region with the country selector.