Xperia Z3 D6603 Official Concept ROM - Marshmallow Edition Download available

Sony Roll-out beta rom!
Version: Android 6.0 Marshmallow
Build: MRA58K.Z1.2058-somc
Model: D6603
DOWNLOAD FTF

ONLY D6603

Sony Concept Installer and Instructions- Thanks @imputazz
THANKS BUTTOM USING IS FREE ;)

Sony Concept Installer download necessary files location : c:\ProgramData\Sony Mobile\Update Engine\localstorage"numbers"\FILE_"numbers" - this files decrypt with Flashtool and Create FTF...
Installer one Issue is can"t install Update Engine, this download here and install manual...