i updated the WP twice and the first time when i updated it gave me the encoding problem but by searching and testing it did work, now the 2nd time when i updated it everything is like before.
i`ve tried most of the solutions to fix this problem and i always think how can i fix this problem when there is new versions.
here is my blog: http://www.q8projects.com/q8diy
if there is any solution for this now and for the future, please tell me if you do not have any solution and working on it let me know please so i can think about some alternatives.
what i tried to fix this:
1- wp-config.php i did the both lines which everybody is telling
2- phpmyadmin tried to check the utf encoding and seems ok