A couple of months after the previous one, T-Mobile has started rolling out a new security update to Samsung Galaxy S6 and Galaxy S6 edge units on its network. Arriving as firmware version G920TUVS5EQA2 and G925TUVS5EQA2, respectively, and weighing in at around 30MB, the update brings along Android fixes for the months of December and January. There's no information on what other changes (if any) are included in the update. Source 1 2 | Via
Source: http://www.gsmarena.com/samsung_galaxy_s6_s6_edge_on_tmobile_getting_security_update-news-23264.php