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A day ago we saw 14.2.A.1.144 firmware getting certification for Xperia Z1 Compact and Xperia Z1 C6903 and here it comes for Xperia Z Ultra C6833 also. 14.2.A.1.144 firmware is not spotted for HSPA+ version of Xperia Z Ultra. 14.2.A.1.144 firmware seems a carrier specific update so far to us as previous build 14.2.A.1.142 firmware has not been rolled on Xperia Z1 and Xperia Z Ultra yet but was seen rolling for Xperia Z1 Compact D5503.

14.2.A.1.146 firmware was spotted on Xperia Z1 Compact M51w a few days ago. At present Xperia Z Ultra is on android 4.3 14.2.A.1.136 firmware and if 14.2.A.1.144 firmware  ever came will bring only minor bug fixing updates to Z Ultra.

Check below the certification of 14.2.A.1.144 firmware for Xperia Z Ultra C6833 on PTCRB page.

Sony has already certified 17.1.A.0.504 KitKat firmware for Xperia Z2 and Xperia Z2 Tablet and we hope so KitKat lands on Xperia Z Ultra also soon.

We will keep you updated if this new 14.2.A.1.144 firmware rolls out for Xperia Z Ultra. If you get this, let us know. Drop your comments below.