My xperia tipo smartphone won't boot up . I think this has to do with the build.prop file which is in the system directory. In an attempt to make my phone run Modern Combat 2, I downloaded a custom build.prop file from here and replaced it with the original one (I made a backup first in the sd card directory). Then I tried to reboot my phone, but now it won't boot . It only shows me the sony logo and stays there. Even after waiting an hour, still nothing. I've tried many ways to boot my xperia tipo in recovery mode, like holding down power button and Vol Up, or by pressing the screen repeatendly after the sony logo appears and MANY MORE, but no luck. I'M SO PISSED WITH MYSELF! Can anyone help?