How to update your site version in drupal

Step 1: Login to Site Admin
Step 2: Go to the Install & manage Web Apps link from the Web Apps section of the left menu.
Step 3: Click Manage Installed Apps.
Step 4: Click the Upgrade link under the version number of the site you wish to.
Step 5: Click the Upgrade button when prompted.
Step 6: You may be prompted to visit a link after the files have been upgraded. If you are, please click the link and follow the steps located on the page. This is so that the database and other configuration files can be updated.
Step 7: Logout the admin panel and login once again and check it.

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