New firmware update hitting Sony Xperia Z1 that comes in build number version 14.1.G.1.531. This is just only a minor update and might only for system improvements and enhancements from previous firmware build version 14.1.G.1.518. There are no official changelog released by Sony for now, but probably they’ll update their support page soon.
So if you owned a Sony Xperia Z1 you should then start seeing a firmware update notification or you can also check for available updates manually by hitting your phone’s Settings. Go to Settings > About phone > Software updates > System updates. If you have downloaded the Sony PC companion just connect your Xperia Z1 phone in your computer using the supplied USB cable then just fire-up that PC companion tool to perform firmware update. If the update is not available yet, juts wait for a couple of hours or even days since firmware update release differently and it depend on country and/or carrier provider locations.
FTF files for developers and advance users is also available for download, just simply hit the source link below. FTF file can be flashed manually using flashtool, for those who might have an unlocked bootloader, rooted or running in custom ROM and recovery.
Android version: Google Android 4.2 (Jelly Bean)
Latest available software: 14.1.G.1.531
Release started: 2013-09-21