It is NOT necessary to run install.php or upgrade.php as no changes are made to the database. As with all WordPress upgrades, the contents of your /wp-content/ folder should remain intact and unchanged.
1.Delete /wp-admin/ folder.
2.Delete /wp-includes/ folder. Note: You must backup /wp-includes/languages/ directory if exists.
3.Delete all the wordpress files in the root directory where the root index.php file is found. DO NOT DELETE wp-config.php.
4.Download and extract the new version.
5.Upload it to the appropriate folders such as /wp-admin/ and /wp-includes/.
6.Upload all the files in the root directory.
7.If existed, restore /wp-includes/languages/ directory
That’s it.
I think it should be better!