Man, there's a (pc) software called Kingo Android Root. You only need to enable USB debugging and connect to PC, and press one button. 30 seconds and it is rooted. Works for almost every device. Tried on I9300 4.3 and it works.
Try flashing this ;)
Thank you very much :good:
I came from S3. Totally new life with G3. No regrets.
If you're using xposed youtube adblocker, adblock+ , adaway etc- disable and try again
Sent from my GT-I9300 using Tapatalk
It worked thank you, and thank you too Spannaa