you have a CID53 phone, you can add flash themes with JDflasher. but you cannot aply the patch since CID53 does not support patching (for free)

download JD flasher with all plugins from here: Jdflasher CID53 update - Top Sony Forums

directorys:

Flash Menus -> TPA/PRESET/SYSTEM/DESKTOP/FLASH
you can add the theme files to your memorystick the regular way