How Root the Samsung I9300 S3
Step 1: Requirements
Rooting the Samsung s3 i9300 you need the following Software
1- Odin (please google and download the latest version like v3.x)
2- CF Root file (i linked this file )
Step 2: Download Mood
After installation of the odin.
please put the phone into download Mode.like in the Pictures.
Step 3: Run Odin
Run the odin.
please make sure the check box like in the picture.
after that you need to click on the PDA button and then select the CF root file (unziped).
after that connect the phone to the computer and click on start.
have fun..you phone will go to restart and its rooted now.
if face some problem please leave the comments and i will try my best to give the answer