your phone is brown which means it is not retail version of the phone but a test/demo/pre-release.
i don't know how they missed that in the service centre unless you took it to shop other than sony ericsson authorized one, in which case they flashed RED firmware into BROWN phone.
my bad, i didnot read ur last post.
well that "local guy" fu****d up your phone, so now you have to fix what he damaged.
there are tutorials here about converting your brown version of the phone into red version, please read them.
after conversion you have to flash your phone again, but with RED version firmware.




