Which WP/Theme/Plugin Updates Should I do First?

This is not for WP network installations

  1. Backup @ BlogVault or backup database and files
  2. Make a list of inactive plugins
  3. Deactivate all plugins
  4. Update the WP core
  5. Update Themes
  6. Update Plugins
  7. Test the site
  8. Reactivate Plugins
  9. Test the site again