The Services Overview page lists the current service and rule versions of the following engines:
Graymail
McAfee
Sophos
You can perform the following tasks in the Services Overview page:
Manually update the engines. For more information, see Manually Updating the Engines Rollback to previous version of the engine. For more information, see Rollback to Previous Version of Engine
https://www.cisco.com/c/en/us/td/docs/security/esa/esa12-0/user_guide/b_ESA_Admin_Guide_12_0/b_ESA_Admin_Guide_12_0_chapter_0100010.html