Sony has released a new firmware update, build 10.5.1.A.0.292, for its Xperia Z C6603 devices in Scandinavia, Russia, Denmark, Hungary and Finland that are currently running 10.5.1.A.0.283 Android 4.4.4 KitKat firmware. You can download its FTF files through the direct download link given below.
Download Firmware 10.5.1.A.0.283 FTF for Xperia Z C6603 [Android 4.4.4 KitKat]
Sony has officially started the rollout of firmware version 10.5.1.A.0.283 (Android 4.4.4 KitKat OS) for its Xperia Z C6603 smartphone on SFR carrier network in France. While the exact changelog is yet unspecified we expect it to be nothing more than a mere stability update targeted at improving overall user experience. Full technical details and direct download link to this firmware are given below.