Drupal: How to update drupal core
Recently, we have updated the Drupal core version for a development site. The previous veriosn was Drupal core version 6.19. We have replaced the version by latest Drupal core version 6.22
We followed the below steps for this purpose:
Step 1: Download the latest version of Drupal core and unzip it to any folder from where to upload.
Step 2: Take a backup of current codebase and database of the site.
Step 3: Make the site offline.