eeka ehema thamai issara welama umbe phone eka wisthara tika hoyaganin setting>genaral gihin.. samahara wisthara itha wadagath eewa pothaka liyaganin. (ex IMI eka version eka wage) eeta passe Itune ekata gahala backup ganna kiyahan ethanadi backup save wena file ekath mathaka thiyaganin samahara...