This KB article provides details about the Symantec Advanced Authentication End-Of-Service (EOS) announcement of 9.1SP4 and earlier versions.
Symantec Strong Authentication 9.1.x
Symantec Risk Authentication 9.1.x
Refer this KB article for Advanced Auth product EOS ( End of support ) information.
How to get to EOL/EOS information for CA Strong Authentication and CA Risk Authentication
How can I upgrade to the latest version SP5 of Symantec Advanced Authentication?
Refer the section Upgrade to 9.1 SP5 on the AA product documentation to upgrade an existing Advanced Authentication release to 9.1 SP5 from 9.1 or higher.
All Advanced Authentication documentation are accessible on the Symantec AA documentation page.