How to change Wordpress language to Estonian in Synology DS112+

There is Estonian translation file and documentation in http://www.kakupesa.net/wordpress/v3/

To apply translation to wordpress you must apply these steps
# ssh -l root 192.168.1.68
# cd /volume1/web/wordpress (wordpress root directory)
# wget http://www.kakupesa.net/wordpress/v3/wordpress-et-3.4.tar.gz (get latest version)
# tar -zxvf wordpress-et-3.4.tar.gz (unzip to wordpress root dir)
# vi wp-config.php and change define('WPLANG', 'et'); (change lanuage definition)
# browser: http://192.168.1.68/wordpress

And Estonian translation must be in place!