can't anybody help me ho to update my device
i see in http://www.sonymobile.com/global-en/software/phones/xperia-zr/ there is update for my xperia zr(C5503)
i try to update direct from my defice but my device say my system is up to date 
my android version right now is 4.1.2
than i try to update using PC Companion, this software also saying my device is up to date (ver 4.1.2)
the last one i try is using update service but the result is my device vertion still 4.1.2
does anyboy can help me how to update my xperia xr (C5503)
