The update brings the build version number N981USQS1CTLB. The update file size is above 2GB  so while downloading this make sure to use Wi-Fi to avoid data charges. The latest update adds One UI 3.0 features which bring improved UI, better usability, refined quick panel, and also the new features of Android 11. Unsurprisingly, Samsung also includes December 2020 security patch in the latest update. As of now, the company has not added all the changes in the update changelog.
As usual, the T-Mobile/Sprint Galaxy Note 20 5G will get One UI 3.0 update in a phased manner. So, it may take some time to reach your phone. Alternatively, you can manually check for the update by navigating to Settings -> Software updates -> Check for updates.

Device Name:  T-Mobile/Sprint Galaxy Note 20 5G Model: SM-N981U Region: Global Android version: Android 11 Build Number: N981USQS1CTLB

Steps to Install One UI 3.0 on T-Mobile/Sprint Galaxy Note 20 5G

Or Using  Frija Samsung Firmware Download Tool

Odin Flash Tool

Check sammobile website to get the latest firmware for your device

Disclaimer

RootMyGalaxy.net is not responsible for any damage happened to your device(s) while following this guide so please proceed at your own risk. However, we would be happy to help with any problems within our reach

Installation Guide (Manual Flashing using Odin)

If the installation is successful, you will see the message Pass in the Log Tab.  

N981USQS1CTLB   T Mobile Sprint Galaxy Note 20 5G One UI 3 0 Android 11 update - 29