Very good news for AT&T Galaxy S5, a new update is rolling out for AT&T Galaxy S5 via OTA (Over-the-air). This update contains January security patch which is the latest one and also performance improvements.The version number of this update for Galaxy S5 is G900AUCU4DQA1. This update will reach your region wise as the update is rolling out region to region.
This update will reach you region wise, in case you have rooted AT&T Galaxy S5 or you have unlocked the bootloader, then you may not receive the update. So either you can unroot your and lock your bootloader to get the update or you can manually download and install the update on your AT&T Galaxy S5.
You can check for the update by going to your mobile’s Settings > About Phone > System update, if the update is listed there then go ahead and install the update or if not then wait for OTA.
This update is still based on Android Marshmallow 6.0.1 sadly, No Nougat update yet. The size of this update is 192 MB so, I highly recommend you to connect with Wi-Fi while installing the update and make sure to charge your mobile up to 50% before updating.
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