Sony xperia U Date & Time Problem?

[Dasun]

I have a Sony xperia U phone .. there is a Problem in Date & Time function (pic) .. want to konw a way to fix this problem!!

I tried to update my phone using Sony PC Companion .. but It didn't work ..   needd HELP ....

thank uuuu ..

[Rickard]

That looks very strange and PC Companion saying there's no software for your phone also indicates there's something wrong in your phone (unless you have rooted it or changed firmware using 3:rd party apps). I suggest you contact a local service location to have this problem investigated and fixed.

[Dasun]

Thank you very much sir ..

I bought it two weeks ago .. so I gave it back! They said they would call me back!

can It be fixed reinstalling android os (Gingerbread) [without " flash firmware with flashtool "] ?

I don't know anything about " flash firmware " Is it good Or bad ? cause any problems ?