Guys, i just got my z3 black yesterday, and when i put it on.. everything is good..

Today, i facing some problems, theres one icon for system update on left top, im at work now and i cant update it. I aint sure is it because of this update, when i received the first call today, the person who called me couldnt hear my voice.

and when i tried to restart it, everything has been reset back for example, wallpaper and lock screen wall paper.

can any master help me in this?

Ok. Will do that when i get back tonight. Hope it will be solve. Thanks