The MSI packages can be found in either the download or in the software repository on ePO:
C:\Program Files (x86)\McAfee\ePolicy Orchestrator\DB\Software\Current\EEADMIN_1000\Install\0000
C:\Program Files (x86)\McAfee\ePolicy Orchestrator\DB\Software\Current\EEPC\Install\0000
More information can be found here:
KB79786 - How to install/upgrade Drive Encryption 7.1 from the command line
If you are referring to an offline system that doesn't communicate to ePO, this information can be found in the DE 7.1 Product Guide (PD24867) on page 39.
appreciate it! I will check out the page 39