The OfficeScan rollback procedure involves rolling back OfficeScan agents and then rolling back the OfficeScan server.
Administrators can only roll back the OfficeScan server and agents using the following procedure if the administrator chose to back up the server during the installation process. If the server backup files are not available, refer to the previously installed OfficeScan version's Installation and Upgrade Guide for manual rollback procedures.
OfficeScan 11.0 Service Pack 1 with a Critical Patch
OfficeScan 11.0 Service Pack 1
OfficeScan 10.6 Service Pack 3