Samsung Galaxy Tab S3 (SM-T827R4) firmware for USA (US Cellular) (USC): 7 builds in the SamMobile archive, newest first. The latest is T827R4TYS3CTC1 (Android 9, built 5 March 2020). Open a build to download it, or switch region with the country selector.
We recommend using Samsung’s own utilities, Samsung Smart Switch and OTA (Over-the-air), to upgrade devices. Use SamMobile only if you are 100% sure about the risks involved in flashing
your device. SamMobile is not responsible for any damage caused by using the files on this website.