How to Upgrade Drupal
- Backup files - FTP client download /www/
- Backup DB - [phpMyadmin | Export ] Save Structure, Data and Save to File.
- set Offline mode - /admin/settings/site-maintenance
- revert to core theme - /admin/build/themes
- disable all non core modules - /admin/build/modules
- Remove old Drupal - Use filemanager to delete contents of /www/
- Install new Drupal - unpack tar and FTP to /www/
- Restore sites - use FTP to copy back sites/default/settings.php plus all multisites
- Run /update.php
- check status - /admin/reports/status
- enable custom theme - /admin/build/themes
- enable custom modules - /admin/build/modules
- Run /update.php
- set Online mode - /admin/settings/site-maintenance