Follow the instructions.
İt looks pretty promising and i dont think that it would brick any phone.
Tested on my Samsung S Duos (GT-S7562)
Any damage done on your phone is not my responsability. These procedures may void your warrenty.
Use at your own risk.
Step 1: Download UnlockRoot Pro 4.10
Don't worry, theres no virus.
Step 2: İnstall
İnstall downloaded .exe
Step 3: Enable USB Debugging
Step 4: Download Device Drivers
İf you use samsung just download Samsung kies.
İf not download it from your phone make's official website.
Step 5: Launch UnlockRoot Pro and Enter Serial Number
Just copy and paste. İf doesn't work just enter it yourself.
And then just hit "Go"
Step 6: Connect Your Phone to PC
Basicly connect your phone.
İt doesnt matter if is on or off.
Step 7: Select Phone
Step 8: Click Root.
Your phone reboot and it will be rooted.
You can download root checker and see if it works.
İf doesnt just leave a comment.