Upgrade or Install Sony XPERIA Z1 C6903 to Android Lollipop 5.1.1. The firmware 14.6.A.0.368 available for downloading https://drive.google.com/file/d/0B1AAC4lt7nzOQTRDT3hNOHR3czA/view?usp=sharing. You can download your Sony XPERIA Z1 C6903 firmware 14.6.A.0.368 at the page. How to Upgrade Sony XPERIA Z1 C6903 to Lollipop using Sony Xperia Flashtools: