Use XS++3.1 Darwin and find original display driver over net or download firmware for your phone and unpack with this tutorial Tutorial:information of your phones FileSystem - Top Sony Forums
You will find original display driver in "ifs/settings/display".Open XS++,connect phone,start FSX and when XS++ open file system on phone drag'n drop orginal display driver in "ifs/settings/display" folder,shutdown FSX and disconnect phone.