A new major bug fixing 14.2.A.1.136 firmware update is rolling of Xperia Z1 and Xperia Z Ultra handsets. Sony rolled android 4.3 update on Xperia Z1 and Xperia Z Ultra in form of 14.2.A.0.290 firmware which has many serious bugs like yellow hue on screen, less battery back up, poor touch screen response etc. 14.2.A.1.124 firmware was seen recently getting certified for Xperia Z1 and Xperia Z Ultra on PTCRB where we posted that a new 14.2.A.1.136 firmware will come soon as it was in testing at that time. 14.2.A.1.136 firmware was yesterday certified on PTCRB for Xperia Z1, Z Ultra and Z1 Compact.

Sony Mobile has just tweeted saying that roll out of 14.2.A.1.136 firmware has started officially globally now. 14.2.A.1.136 firmware keeps Xperia Z1 and Xperia Z Ultra on android 4.3, confirmed in regions like Finland, Generic Nordic Countries like Norway, Vietnam, Hong Kong, UK, Canada ( for Xperia Z1 ) and India, Thailand, UK ( for Xperia Z Ultra ) and currently available over PC Companion and SUS and Bridge for Mac

[ UPDATE ] 14.2.A.1.136 firmware update confirmed in India on Xperia Z1 C6902 and Xperia Z Ultra C6802. It’s a hefty 944.6 MB update in size for Xperia Z1. 14.2.A.1.136 firmware OTA available now on Xperia Z1.

To update your Xperia Z1 and Xperia Z Ultra, connect it to PC Companion and look for 14.2.A.1.136 firmware notification and then proceed as per on screen instructions.

Xperia Z1 14.2.A.1.136 firmware update via PC Companion

14.2.A.1.136 firmware update is confirmed rolling now on both C6902 and C6903.

14.2.A.1.136 firmware for Xperia Z1 is also available on Sony Bridge for Mac.

14.2.A.1.136 firmware is also available as OTA on Xperia Z1, size is 59.5 MB.

[ Pic credits, XDA user poo-tang ]

After updating on the first reboot, you will see that Android is upgrading and “85 applications are optimized” and then boot will be finished.

Xperia Z1 14.2.A.1.136 firmware About Phone Info

• Phone – Xperia Z1 C6903
• Firmware Build Number – 14.2.A.1.136
• Kernel Version – 3.4.0
• Baseband Version – 8974-AAAAANAZQ-10270028-35
• Android – 4.3 Jelly Bean

Xperia Z1 Software Info of 14.2.A.1.136 firmware

• Phone Software Version – 1274-8313_14.2.A.1.136
• Customization Version – 1276-2561

Xperia Z Ultra 14.2.A.1.136 firmware update via PC Companion

14.2.A.1.136 firmware update is already confirmed on Xperia Z Ultra C6802 HSPA+, C6833 version.

Xperia Z Ultra 14.2.A.1.136 firmware About Phone Info

Xperia Z Ultra Software Info of 14.2.A.1.136 firmware

• Phone Software Version – 1271-5715_14.2.A.1.136
• Customization Version – 1275-7780

We will soon post the 14.2.A.1.136 firmware ftf for manual flashing by flashtool as soon as it is available for Xperia Z1 C6902 / C6903 / C6906 handsets and Xperia Z Ultra handsets.

Download Xperia Z1 14.2.A.1.136 firmware ftf

# For C6903 Italy

Download C6903_14.2.A.1.136_Generic IT_1276-0557_R2B.ft
[via XDA user cingolat]

# For C6903 PCT

Download C6903_14.2.A.1.136_PCT_1276-7743.ftf
[via XDA user Desperanto86]

# For C6902 India / International C6902

Download C6902_14.2.A.1.136_GENERIC IN.ftf
[via XDA user jmgg2k]

# For C6943 Brazil

Download C6943_14.2.A.1.136_Generic_BR_1276-7099_R3B.ftf
[via XDA user RHBH]

Download Xperia Z Ultra 14.2.A.1.136 firmware ftf

# For C6833, German LTE

Download C6833_14.2.A.1.136_GermanyLTE.ftf
[via XDA user chemcup]

Download flashtool-0.9.13.0-windows.exe
[ via – Flashtool.net ]

We will soon update the links for Xperia Z1 C6902 14.2.A.1.136 firmware ftf for Indian users.

Check below link on how to flash the 14.2.A.1.136 firmware ftf on your Xperia Z1 and Z Ultra.

GUIDE :- How to flash 14.2.A.1.136 firmware ftf on Xperia Z1 and Z Ultra using flashtool ?

Xperia Z1 / Z Ultra 14.2.A.1.136 firmware Changelog

As per Sony, update brings “display, BT music streaming, email, Wifi improvements and more“!

now rolling (phased): JB 4.3 firmware for #XperiaZ1 & #XperiaZUltra – brings display, BT music streaming, email, Wifi improvements and more!

— Sony Xperia News (@SonyMobileNews) January 30, 2014

• White Balance Settings included.

• Screen Display calibrated. Though we don’t see any change, still yellow hue is there on 14.2.A.1.136 firmware .
• Touch Screen Response seems ok, same as before.
• Wi-Fi reception is same as before, no major improvement.
• Improvement in RAM management.
• No App to SD card option.
• No new camera apps
• Touch firmware version updated to “D” from “B”.
• Movies and Album app updated to new version.
• Better battery backup now on Xperia Z1. Tested for almost 24 hours and satisfied as compared to pathetic battery backup on previous .290 firmware.
• Time Shift Burst app working properly on Xperia Z Ultra now.

Sony has already started working on Android 4.4.2 KitKat 14.3.A.X.XXX firmware for Xperia Z1, Xperia Z Ultra and Z1 Compact and hope so soon after the launch of Sony D6503 and Sony D6603 at MWC 2014 Feb event, we will get it.

If you are looking to root 14.2.A.1.136 firmware on Xperia Z1, Z Ultra we will soon post the guide for it. If you have already updated your Xperia Z1and Xperia Z Ultra  on 14.2.A.1.136 firmware then do let us know what changes you noticed in this new 14.2.A.1.136 firmware. Drop your comments below with your changelog and any bugs if you are still facing.

Thanks Mikael Eenilä , Bee Sek, Gabriel De Saro 🙂