Xperia Blog submitted a new resource: Xperia Z3_D6603_23.4.A.0.546_Nordic_Generic - Sony Xperia Z3 (D6603) Android 5.1.1 firmware - Generic Nordic Read more about this resource...
I have registered on this forum, why i can't download this file? this message about registration blink again.
You should be able to - the "Download Now" box on the top right should be orange. Click on it to take you to the download link.