Samsung Galaxy S4 isn’t fully distributed over the world yet but its first official firmware has been leaked. Thanks to AdamLange of XDA Developers who has posted the first leaked version of Galaxy S4 firmware. After it outed, Samsung released the official firmware for the Samsung Galaxy S4 (GT-19500).
Currently, Samsung has only released the firmware for China, but we should be seeing the firmware released to other countries soon. The Samsung Galaxy S4 runs the latest Android software (Android 4.2.2 Jelly Bean), which comes with the TouchWiz Nature 2.0 user interface.
Here are details of the Firmware :
Android Version: 4.2.2 – Build JDQ39
Build Date: April 24