Hi,
i have seen in the Knowledge Base, that Avaya hase changed the Upgrade way from 11.0 to 11.1 completely.
I think it will be easier...
•Upgrade Process Changes
This document covers the process of upgrading to R11.1 SP1 via R11.0.4.4. The process is different from that originally used for upgrading to R11.1 from R11.0.4.3. For those familiar with the previous process, a summary of the changes are available. See Changes to the Upgrade Process.