Option for turning shutter sound off comes with this firmware by default (if you set warning tones to off for current profile)..... this is different in some countries because of the law, some countries forbids public image snapping without some kind of notification (in this case blinking led and shutter sound) and there is no way to turn it off - even if headphones are plugged in, in Europe this is not forbidden....
P.S. when I said ``not made for my country`` I was referring to firmware and product code....

The only other way is to install ccam app - it works, but it`s very limited and there is no video capturing and other settings....