If you own a Sony Xperia Z3 or Xperia Z3 Compact and did not make it into the Marshmallow Android Concept beta program, then help is at hand. The FTF firmware files for Sony’s Android 6.0 Marshmallow build is available to try for all Xperia Z3 (D6603) and Xperia Z3 Compact (D5803) owners.
First impressions of the Marshmallow Concept firmware are positive judging by initial feedback. People are reporting that the ROM is fast with very good battery life performance. Key Marshmallow additions such as ‘Doze’ for battery life and the new app permissions are included within this Sony ROM. Sony has included a new home launcher with this ROM that allows you to switch the app names within the dock on or off.
There are some features missing though, including double tap to wake, quick unlock, STAMINA mode and no Xperia Themes. However, the key Sony media apps are included such as Album, Music and the stock Camera app.
If you have used the Flashtool utility before, then installation should be straightforward. You simply need to flash using the FTF firmware files linked to below. Make sure you do not use the FSC Script to flash when using the latest version of Flashtool.
Sony Concept for Android Marshmallow FTF firmware files
Thanks Balazs and Jozef!