The latest update brings software version N970USQS3CTD3 and N975USQS3CTD3 for the Galaxy Note 10 and Galaxy Note 10+ respectively. These updates are mainly rolled out to improve the system stability and performance of the devices. This is really great to see that a major carrier in the US has already started rolling out the latest security patch to some of its devices. You can manually check for the update from Settings > Software update >Download updates manually. If there is no update showing on your device, then wait for few days for the update to come to your device as it is being released phase-wise manner or you can manually flash the full firmware using Odin Flash Tool.
How To Download N970USQS3CTD3 and N975USQS3CTD3 Firmware:
There are various places like sammobile where you can get the latest firmware for your galaxy device. We have a detailed guide where we have shown 5 ways to download the latest firmware. You can check the guide below.
You can follow our detailed guide to download the latest firmware
Manual Installation Guide
How to Install Samsung Stock ROM via Odin Tool
Now, you can easily install or upgrade your T-Mobile Galaxy Note 10 and Note 10+ to the latest security update.