How to fix wordpress automatic upgrades when hosted on 1and1

I use 1and1.com(affiliate link) to buy domains cheap. I have a hosting account with them as well.

WordPress allows you to update your version within the dashboard, but when used on 1and1 (one and one or 1&1) servers it hangs and never completes the update. This is also a problem when updating plugins from within the wordpress CMS.
But I’ve found a solution to wordpress upgrades not working on 1and1.

To fix this, modify your .htaccess file, or create a new one with the following information.

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>

# END WordPress

AddType x-mapp-php5 .php
AddHandler x-mapp-php5 .php