A few days back we saw 14.3.A.0.761 firmware on Xperia Z1 L39h in China while the same update not seen anywhere else. Following 14.3.A.0.761 firmware, a new 14.3.A.0.769 firmware has been certified at PTCRB for Xperia Z1, Z1 Compact and Z Ultra recently. After buggy KitKat update from Sony, 14.3.A.0.757 firmware was released to fix those bugs but unfortunately they are still there as users are reporting them.
14.3.A.0.769 firmware is not certified for all variants of Xperia Z1, Z1 Compact and Z Ultra as only certain region handsets have got certification yet on PTCRB. Either 14.3.A.0.769 firmware will be certified later for all regions or is it again a carrier specific firmware update; time will tell.
14.3.A.0.769 firmware certification for Xperia Z1 C6903 on PTCRB.
14.3.A.0.769 firmware certification for Xperia Z Ultra C6833 on PTCRB.
14.3.A.0.769 firmware certification for Xperia Z1 Compact D5503 on PTCRB.
We will keep you updated as soon as 14.3.A.0.769 firmware starts rolling on above mentioned devices. Let us know what bugs you are facing currently. Drop your comments below.