You can download the YAD7 source code from the Github YAD7 archive and unzip it to create a Drupal 7 installation.
Then, you can maintain your sites directory independently and simply unzip and overwrite from the zip file to update YAD7 as new updates become available.
Do not forget to run update.php after installing a new update.
If you are new to Drupal 7 or YAD7 and are interested in hosting your own website, please see this guide to create, develop, and maintain a YAD7 Drupal 7 site.
4 / 2019