Global Firmware 14.1.G.2.257 Z1 C6906

[banditmec]

How can I get Global Firmware 14.1.G.2.257 Z1 C6906 ..??

[Uliwooly]

Just like any other update you have 2 options

1) wait for the update to be approved and released in your country 

or 

2) manually update your phone 

http://www.sonymobile.com/global-en/software/phones/xperia-z1/

Latest available software

You may already have the latest software, depending on the date of purchase. Software updates are released at different times depending on operator and/or country. Therefore, we cannot give you an exact date for when a specific update will be available for your device.

Android version: Google Android 4.2 (Jelly Bean)

Latest available software: 14.1.G.2.257

Release started: 2013-10-15

To find your device’s current software version: 
Settings > About phone > Build number / version

[Uliwooly]

How to manually update, downgrade, root 2013 Xperias

http://talk.sonymobile.com/thread/124152