Hallo, i am from germany and I try yesterday to install the Sony N Developer Preview on my Sony Xperia Z3 - D6603 with the Sony PC Companion and it doesn't work. I push down and hold the alt key on my keyboard and click with the mouse on software repair and the PC Companion goes into the Developer -Modus after that I connected the smartphone into flashmode with the computer, than the PC companion give me only the reason to factory reset or repair my handy under that reason stand the sentense your smartphone doesn't support Sony N Developer. Did Sony stop the support for Z3, or did I made something wrong. I download the latest version of the PC companion.