Can you test the keyboard please? generally it feels like less sensitive while writing.
4.5.4I link -->https://yadi.sk/d/2YlCdjvAjtCvv
it can be installed in a different way to the non-international devices. if you dont know the way please do not install it. it contains a system.img file which can be written over the current system by a terminal emulator apk. I warn you if you dont know how to install international firmware to non-international devices please do not deal with it.