Sony has released the open source files for the new Sony Xperia Z Ultra and you can download the files directly from Sony’s Developer website (download link at the end of the post). The release is in the form of software version 14.1.B.0.461.
Sony Xperia Z Ultra features a 6.4 inch full HD display with a resolution of 1920 x 1080 pixels, Qualcomm Snapdragon 800 processor, 2GB of RAM and include 16GB of built-in storage. It has an 8 megapixel Sony Exmor RS camera, and packs 3,000 mAh battery. The Xperia Z Ultra designed to be resistant to both dust and water and it features Android 4.2.2 Jelly Bean