T-Mobile 635 OS update - Update 1 for 8.1?

[Philip Hamm]

I got an update last night from T-Mobile. Now I'm on version 8.10.12400.899 is this the anticipated Update 1 for Windows Phone 8.1? What's the number for the new function to call Cortana? I want to program it into the Bluetooth in my car it will be a great function for me.

 

[N_LaRUE]

It's 8.10.14147.180 for Update 1.

 

[Guytronic]

The update was covered here:
T-Mobile updates Lumia 635 with better inflight texting support | Windows Central