android 5.0

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    Galaxy S5 not updating Android system

    Hi, newbie here. I have a Samsung Galaxy S5 unlocked AT&T. Provider is Straighttalk. The Android system has not updated beyond ver. 5.0 (not even 5.0.1). Here are numbers that may help provide a solution. Ver. 5.0 Baseband ver. G900AUCU4BOF2 Kernel ver. 3.4.0-4432708 Please tell me how to get...