Download Android Jelly Bean 4.3 stock firmware for Samsung I9300 Galaxy S III smartphone from here or from here. Download Android Jelly Bean 4.2.2 stock firmware for Samsung I9300 Galaxy S III smartphone from here.Firmware details
Archive file size: 497 MB
Platform: Exynos 4412
Caution: Please do not update firmware unless you know what you are doing, you really want it or it is absolutely necessary. Firmware updates may occasionally have bad results, like bricking your device, temporarily or permanently. The firmware update process is done entirely at your own risk. Before attempting to update the firmware, back up your data.