Follow the guide in general forum, sticky thread on how to flash with Odin, download the latest firmware for your country at sammobile.com.
After flash then factory reset in recovery.
Sent from my GT-I9300 using Tapatalk
Note: This quote doesn't automatically apply to everyone, decide for yourself if it might apply to you.
Originally Posted by justruss
What has this place become?
It's essentially a few people graciously answering the same repeating of immature, lazy, demanding questions from the masses.
Nobody searches. Nobody reads the first posts or titles of threads. Nobody even looks at posts a couple above their own.