Download this firmware from sammobile.com/firmware:
Malaysia 2013 April 4.2.2 I9500XXUAMDE I9500OLBAMDC
Extract this zip file to get the final tar file and copy it to your PC
Download following files ( go and google for it)
1. Samsung USB phone drivers
2. Odin any version 1.85, or 1.87 or 3.02
Install phone drivers in PC
Boot phone to download mode ( Vol down+power+home follow by vol up till you see downloading mode)
Connect phone to PC
Launch Odin - you will see phone detected and a yellow box showing COM number shown
Select the tar file as PDA and leave the rest untouch. Select START and the rom will be flash. Wait for it to complete an phone successfully reboot than only disconnect from PC
P/S : Disable all anti virus in PC n ensure KIES is not running. Make sure phone is at least 50% charge
Hope TS can stick this at 1st page.
Easy for newbie who want to know how to flash official stock firmware via PC Odin.