1.Upgrade the server to R11.0.4.5 using the standard ISO upgrade process. Test and verify correct operation of all services on R11.0.4.5 before upgrading to R11.1 SP2/FP1.

It is especially important to verify Media Manager is running if the server has stored call recordings. Media Manager must be running during the upgrade process for correct migration to R11.1 SP2/FP1.