I am new to phpBB (I have no programming knowledge too). I have just installed phpBB 3.0.14 because the theme I am using has not been updated for 3.1 yet.
I tried to use phpBB SEP Premod to have seo friendly urls. I have successfully installed the mod but nothing changed.
If I run example.com/phpbb/install/database_update.php to update the DB, it throws a 404 error.