Sony Mobile has begun to roll a new firmware update for the Xperia X that moves the build number from 34.3.A.0.194 to version 34.3.A.0.206. The ‘194’ update was the first to feature Android 7.1.1 Nougat, so Sony may have quashed some bugs in the latest build, but we can’t say for sure as, annoyingly, Sony never includes a changelog in their releases. What we can see is that the Android security patch has been updated to 1 July 2017 (from 1 June previously).
At the time of writing, the update is rolling on the single SIM Xperia X (F5121), however expect available to widen to the dual SIM (F5122), as well as the Xperia X Compact shortly. As usual, we will include all relevant FTF firmware links below in due course.