Click the following link to download the Symantec Endpoint Protection (SEP) 11.0 RU6 Client-only patch (32Bit) for SEP 11.0 MR4 MP1:

ftp://ftp.symantec.com/public/english_us_canada/products/symantec_endpoint_protection/11.0/updates/SEP32_19To550_clientMSPMSI.exe

Release Date: April 14, 2010
Description: This patch upgrades Symantec Endpoint Protection 11.0 MR4 MP1 32-bit clients to version 11.0 RU6.

NOTE: This patch will only upgrade 32-bit clients. If you need to upgrade your Symantec Endpoint Protection Manager to 11.0 RU6 you must download the complete update from File Connect. Once you have upgraded the manager to 11.0 RU6 you can also upgrade clients using the auto-upgrade mechanism built into the Manger console.

For additional information about changes in Release Update 6 read the Release Notes. An MD5 file is also available.