[Q] Can't change icon theme Z ultra topic

Hello, I've been Download and Install theme (include icon pack). but after apply that theme, there is nothing change the Icon in my Home screen. then, The Devices has been root.
why??

please help me.
thanks.

Attached Files

SONY VAIO Theme V3 With Flat Icon.apk - [Click for QR Code] (8.94 MB)