updating Drobo

Drobo will not update automatically and so I need to update manually. When I go to downloads it says “Upgrade to 2.1.5 requires Drobo Dashboard 2.4.2 and above”… BUT I have version 2.2.3 (i haven’t used my drobo much in the past) What can I do to update it?

install the newer version of dashboard???

http://www.drobo.com/drobo-downloads-2/