Having downloaded an ISO image to the server, IP Office Web Manager shows an 
icon and Upgrade Available next to the server's details on the Solution menu.
•! WARNING - Not Supported for Upgrades from Pre-R12.0
This method of upgrading is not supported for upgrading from pre-R12.0 releases. For example, from R11.1 to R12.0. The sever must be upgraded using the processes in the Upgrading Linux-Based IP Office Systems to R12.0 manual.
•Scheduled Upgrades
Through the IP Office Web Manager menus you can schedule actions such as upgrading rather than running them immediately. For details of scheduling actions, refer to the IP Office Web Manager documentation.
•No Application Services Available During Upgrades
During the upgrade, the services (one-X Portal for IP Office, Voicemail Pro and web control) are stopped and not restarted until after the module reboots.
To start an upgrade using IP Office Web Manager:
1.Login to IP Office Web Manager.
2.The Solution overview appears. If not, select Solution.
3.Select the checkbox next to each server to upgrade.
•Note
Multi-server upgrades require the primary server upgraded before any other servers. When that is the case, repeat this process until both the primary server and any other servers are upgrade.
4.Click on the Actions drop down and select Upgrade.
5.Set the Upgrade from option to Primary Server. Click OK.
a.Read the license warning and if okay to upgrade, click Yes.
b.Read the license agreement for the upgrade and if okay select Accept and click Next.
6.Click Close.
7.The menu shows the progress of the upgrade.
8.The upgrade process typically requires the IP Office Web Manager server to restart, ending the current web browser connection. If this occurs, login to IP Office Web Manager again to check on the status of the upgrade.