In order to upgrade from version 1.5 to 1.6 of the BCHSM agent the recommended best practice is to completely ‘undeploy’ the current version and then deploy the new version. Following this procedure should not impact any existing private key material stored within the HSM.
Download the Agent v1.6 tarball and extract its contents. (Go to the SGOS GA or SSLv GA release download page to find the agent)
Do a chmod 777 on the files to make them executable.