Download Kitkat Beta For Zenfone V As Well As Zenfone 6

Download Kitkat Beta For Zenfone V As Well As Zenfone 6

DWYOR (Do it With Your Own Risk) 
Want stable version? Wait for the Official/Final then. Because this version was launched on 17-07-2014 (Beta version).
Links from ASUS OTA update center.

Zenfone five WW Version A500CG/A501CG

Zenfone five TW Version A500CG/A501CG

Zenfone vi WW Version A600CG

Zenfone vi TW Version A600CG

How to Flash?
Flash WW Firmware v 1.15.40.35 as well as then flash this nothing via ADB/Manual update