Upgrade or Install Sony XPERIA Z1 Compact D5503 to Android Lollipop 5.1.1. The firmware 14.6.A.0.368 available for downloading https://drive.google.com/file/d/0B1AAC4lt7nzOZEVJdUY4Zm5SaEk/view?usp=sharing. You can download your Sony XPERIA Z1 Compact D5503 firmware 14.6.A.0.368 at the page. How to Upgrade Sony XPERIA Z1 Compact D5503 to Lollipop using Sony Xperia Flashtools: