Hi,
Thank you for posting in Symantec community.
You can find SEP release version details here:
http://bit.ly/m0vOJp
At fileconnect website you will able to download the latest version of SEP only.
If you need older version of SEP then need to log a case with the support team.
If you could share the case number with me I can upload it on FTP/or can get in touch with the engineer and can share the credentials to download.
If you need product release notifications then register here:
The SymWISE email subscription and RSS feed services.
http://www.symantec.com/docs/TECH133236