Step 1: Extract CF-Auto-Root and Odin 3.07 files using winrar/7zip/winzip or any other extracting tool.
Step 2: Switch off the Galaxy S3. Then boot the device into Download Mode by pressing and holding Volume Down, Home and Power buttons together until a construction Android robot icon with a warning triangle appears on screen. Now press the Volume Up button to enter Download Mode.
Step 3: Launch Odin on the computer as an Administrator.
Step 4: Connect the Galaxy S3 to the computer using USB cable while it is in the Download Mode. Wait until Odin detects the device. When the device is connected successfully, the ID: COM box will turn to light blue with the COM port number. Additionally, the successful connected will be indicated by a message saying Added.
Step 5: In Odin, click the PDA button and select the CF-Auto-Root-d2tmo-d2tmo-sght999.tar.md5 file.
Step 6: Verify that Auto Reboot and F. Reset Time checkboxes are selected in Odin. Also, ensure the Re-Partition option is NOT selected.
Step 7: Double-check and click Start button in Odin. The installation process will now begin.
Step 8: Once the installation process is completed, your phone will restart and soon you will see a PASS message with green background in the left-most box at the very top of the Odin. You can now unplug the USB cable to disconnect your device from the computer.
There is only one thing I did differently than what the guide said was to install SuperSU before I did the root. The root completed successfully; however, SuperSU crashes whenever I try to launch it and KNOX puts a warning in my notifications tray. I never installed or launched KNOX prior to performing the root and I cannot update or remove SuperSU. I also cannot install or remove KNOX. I've been browsing forums and looking for answers but I can't understand half of the things people are saying. Does anyone have a noob-friendly solution? (By the looks of it, there are many people with similar issues due to KNOX.)
Thanks in advance.