Download the root file kernel For root the Galaxy S3 GT-I9300
Model Number : GT-I9300
Android Version :Jelly Bean (4.3)
Description:
Extract the kernel placed in this post after download and Flash the file in the pda section in the odin software.
Warning:
This file is only for Galaxy S3 GT-I9300 model, dont use this file for other models .if use it can damaged your device