Update Galaxy S4 to Android 4.4.2 I9500XXUFNB3 KitKat Official Firmware [GUIDE]

Samsung has started rolling out the latest Android 4.4.2 KitKat update with build number I9500XXUFNB3, for the international model of Galaxy S4 (GT-I9500). The firmware is now available for download via Over-The-Air (OTA) update as well as through KIES for Galaxy S4 users in Russia.