An extension called taoUpdate is available since TAO 2.5 to allow System administrator to update your installation to the last version of TAO and replace previous way of upgrade your TAO installation. First, we strongly advise any administrator to create database backup of their system before launching the update.

6. If you loose this key, a file with the admin key had been created in a folder called deployNewTao, simply connect to “http://ROOT_URL/deployNewTao/Main/index?key= $key” where$key is the key you found in the file.