Upgrading the Drupal 7 major and minor versions

Here in this post I point out the steps to Upgrade Drupal major and minor version.

Steps to Upgrade Drupal minor version.

• Backing up the site,
• Putting it into maintenance mode.
• Downloading the new version of the module.
• Uncompressing it.
• Running "yoursite.com/update.php".
• Testing the site.
• Taking the site out of maintenance mode.

Steps to Upgrade Drupal minor version.

• Backup your existing site and database.
• Log in as user ID 1.
• Put your site in maintenance mode.
• Change all themes to Garland.
• Disable non-core modules.
• Remove default settings file.
• Remove all old core files and directories.
• Remove uninstalled modules.
• Download Drupal 7.
• Re-apply modifications to core files.
• Make your settings.php file writeable.
• Run the update script.
• Backup your database.
• Upgrade fields.
• Update contrib modules and themes.
• Check the Status Report.
• Make sure settings.php is secure.
• Check Drupal Core Modules.
• Remove your site from Maintenance Mode.