Install I9300XXUGOB2 Android 4.3 Jelly Bean Firmware on Galaxy S3 GT-I9300 [Complete Tutorial]

I9300XXUGOB2 Android 4.3 Jelly Bean official firmware for
Samsung Galaxy S3 GT-I9300 is out and the users can now manually download the firmware zip file from here at
NasirTech. Samsung time to time releasing software update for all their Android
Smartphone and tablet devices and it is always recommended to update the latest
available firmware for your device as with every new firmware