Originally Posted by alinolaw71
for avtive XReality engin& vivid add blw lins to end of build proup :
Xreality engine and vivid colors doesnt work on Cm Based Roms.It is about with DRM-Keys of Sony.
You can look bottom link for it.Some chinese Developers are hacked Digital Rights Management(DRM)
and Special Sony Features can be use without drm keys.It is called "DRM Function Restoration" This method is only for Stock Roms.If you want to return original stock rom with DRM functions (X-Reality,Bravia Engine,White Magic Techonoloy,BIONZ etc).Look at here
It should work on Xperia Arc too.Not tested