Guys need help, can someone please summarize the steps to upgrade Unity from 3.1 to 4.0? The environment is Voice Mail only, where Unity is completely isolated from the domain. ( Unity Server is the Domain Controller). Exchange 2000 is installed locally on the Unity box ( there is no failover & this exchange is completely separate from company Exchange cluster).
The many steps are nicely detailed in this good Unity doc;
Upgrading Cisco Unity 3.x Software to the Shipping Version
Hope this helps!