AT&T has released a new software update G950USQU2BQK5 for Galaxy S8 and update G955USQU2BQK5 for Galaxy S8 Plus in the US. The latest update brings support for Mobile Hotspot APN and HDR API for DirecTV as well as improved network performance.
Enhanced network performance and enhanced Bring Your Own Device (BYOD) experience, including device restart to bring the device onto the AT&T network (Factory Data Reset no longer required), AT&T preloaded applications and features will be on the device after the restart, previous carrier’s preloaded applications and features will be disabled after the restart, and customer content will be retained (e.g. Images, documents, files, call logs, ringtones, user accounts, etc.)
The update also includes Android latest Security patch which fixed Common Vulnerabilities and Exposures discovered in the Android operating system. In addition, there are device stability improvements, bug fixes and further enhancements for performance. The update size is around 480MB.
Software update G950USQU2BQK5 for Galaxy S8 and update G955USQU2BQK5 for Galaxy S8 Plus will gradually release to everyone. You can also check manually for updates, go to Settings > About device > System update.
Make sure you have enough charge on your device at least 60% to 70% before downloading the update.