Sony is now putting out a bug fix for the Xperia Z1, Xperia Z Ultra, and Xperia Z1 Compact; Firmware 14.3.A.0.757 takes the place of the former version (14.3.A.0.681), to fix a few sound issues that were introduced after the devices were updated to Android 4.4 KitKat back in March.

Just like any other new firmware, the Android 4.4.2 KitKat 14.3.A.0.757 update for Sony Xperia Z1, Xperia Z Ultra, and Xperia Z1 Compact is being rolled out in stages, meaning that some of you might not be able to download and install it right away.

It hasn’t hit all regions yet, but here are the ones that should have received the update by now:

UK Germany Russia France China Israel Poland Sweden Austria Philippines Netherlands Slovakia

Source