I Edited my Phones Build.Prop.(India)

I Did That so i can access apps which are not available in Country.
So after changing my build.prop i changed my country to Us ..And then installed the required apps. So after that i changed my country to india
So i restarted my phone but after that my phone is not starting it stucks in the htc logo..:crying:
So to fix that i did a factory reset but to no avail..
Pls Help What Should i do ..Now