Following on from the firmware update that hit the Xperia E recently (C150X), it looks like Xperia E dual (C160X) owners aren’t being left in the cold. Firmware build 11.3.A.3.1 is currently rolling to the Xperia E dual (C1604 and C1605). The new update doesn’t bring any noticeable changes, so it probably provides a bug/security fix. The FTF firmware file can be downloaded here. See a video (in Czech) of this firmware in action below.