How to root Samsung Galaxy SIII (GT-I9300)

Requirements:

1. PC
2. Samsung Galaxy SIII (GT-I9300)
3. Samsung USB Drivers

Downloads:

1. Odin V 1.85, here
2. CF-Root-SGS3-V6.4, here

Instalation Step:

1. After you download the files, unzip that file
2. Open Odin (From Odin V 1.85.zip)
3. Turn off your phone, then go to Download Mode (Hold vol down + home button + power button )
4. Press Vol Up to continue, now your phone showing text "downloading"
5. Connect your phone to PC
6. Now at Odin, make sure repartition not checked , and at the left down of odin showing message "Added"
7. Click PDA button and select CF-Root-SGS3-vX.X.tar (From CF-Root-SGS3-V6.4.zip)
8. Click Start button, Do not click anything while in process
9. The green colour with "Pass" message will appear
10. Wait for android reboot to recovery and reboot again to normal
11. Unplug your phone from PC
12. Done, check at your app, make sure SuperSu, CWM Manager installed ( CWM Recovery also installed )

Images :

Download Mode