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While Xperia Z1 users are waiting for official android 4.3 update for their devices which is due in December as per Sony’s statement on their blog we have spotted some new android 4.3  firmware set running on Xperia Z1 while running handset detection program by our blog. At present Xperia Z1 is running android 4.2.2 version and 14.1.G.2.257 firmware series and recently android 4.3 14.2.A.0.205 firmware was spotted on Sony D5503 model.

With respect to android 4.3 14.2.A.0.205 firmware spotted running on Sony D5503 model, we spotted Android 4.3 14.2.A.0.XXX, 14.2.A.1.XXX firmware builds exclusively running on Sony Xperia Z1 C6903, while some of the builds were also spotted on C6902. All the Android 4.3 14.2.A.0.XXX, 14.2.A.1.XXX builds seemed as various testing versions and one of them can be a final version also, hopefully the most higher build.

[ UPDATE – 16 December ]

Xperia Z1 and Z Ultra Android 4.3 14.2.A.0.290 firmware Update Rolling Officially

[ UPDATE – 5 Dec ] 

Xperia Z1 C6903 and Xperia Z Ultra C6833 will feature same android 4.3 build 14.2.A.0.290 and Xperia Z, ZL, ZR and Tablet Z will feature a new android 4.3 10.4.B.X.XXX firmware build.

[ UPDATE ]

C6902+C6906+C6903+C6943 will have the same numbering 14.2.A.0.2xx as 4.3 android and 14.2.A.1.XX build is for US version. While Xperia Z1 C6916 is running 14.2.C.X.X as 4.3 android. Identity of C6916 is still unknown.

In total we spotted 9 firmware builds from android 4.3 14.2.A.0.XXX running on Xperia Z1  as 14.2.A.0.146, 14.2.A.0.152, 14.2.A.0.177, 14.2.A.0.183, 14.2.A.0.206, 14.2.A.0.229, 14.2.A.0.242,
14.2.A.0.255, 14.2.A.0.266 and 3 android 4.3 14.2.A.1.XX build running on Xperia Z1 viz. 14.2.A.1.4_131104, 14.2.A.1.31, 14.2.A.1.37.

Check below for the spotted Android 4.3 14.2.A.0.XXX, 14.2.A.1.XX firmware builds details as per our handset detection program.

Xperia Z1 Android 4.3 C6903 14.2.A.0.146 firmware shown below. [ CLICK on Image to ZOOM ]

Xperia Z1 Android 4.3 C6903 14.2.A.0.152, 14.2.A.0.177, 14.2.A.0.183, 14.2.A.0.206 firmware shown below. [ CLICK on Image to ZOOM ]

Xperia Z1 Android 4.3 C6903 14.2.A.0.229 firmware shown below. [ CLICK on Image to ZOOM ]

Xperia Z1 Android 4.3 C6903 14.2.A.0.229 firmware shown below. [ CLICK on Image to ZOOM ]

Xperia Z1 Android 4.3 C6903 14.2.A.0.255 firmware shown below. [ CLICK on Image to ZOOM ]

Xperia Z1 Android 4.3 C6903 14.2.A.0.266 firmware shown below. [ CLICK on Image to ZOOM ]

Xperia Z1 Android 4.3 C6903 14.2.A.1.4_131104 firmware shown below. [ CLICK on Image to ZOOM ]

Xperia Z1 Android 4.3 C6903 14.2.A.1.31 firmware shown below. [ CLICK on Image to ZOOM ]

Xperia Z1 Android 4.3 C6903 14.2.A.1.37 firmware shown below. [ CLICK on Image to ZOOM ]

If you have noticed above images clearly you must have seen that android 4.2.2 14.1.G.2.260 firmware is also detected which was never rolled yet as the latest android 4.2.2 build spotted on Xperia Z1 is 14.1.G.2.259. Another mysterious android 4.2.2 14.1.X.6.258 is also spotted.

It is not very clear so far which build will finally be rolled on Xperia Z1 as android 4.3 firmware, it can be any of the above stated firmware or can be the any new build which has not been detected yet.

As per our confidential source, next stop for Xperia Z1 will be android 4.3 now ( no more android 4.2.2 build will be rolled ) and is in pre-final testing version and soon all Xperia Z1 users will taste it. Excited for android, let us know…Don’t ask for ETA as there is none yet except the month December 😛