Hello,
Only Certified Definitions gets downloaded to the LUA & SEPM server.
The Rapid Release Defintions needs manual download and installations.
Download the RapidRelease Manually from the site provided below in .jdb format.
http://www.symantec.com/security_response/definitions/download/detail.jsp?gid=rr
FTP link to RR defs, if needed:
ftp://ftp.symantec.com/public/english_us_canada/antivirus_definitions/norton_antivirus/rapidrelease/
and
Check these Articles to work on the steps provided below:
How to update definitions for Symantec Endpoint Protection Manager (SEPM) using a .jdb file
http://www.symantec.com/docs/TECH102607
How to apply rapid release definitions to a Symantec Endpoint Protection (SEP) client.
http://www.symantec.com/docs/TECH104979
Hope that helps!!