Although it might be tempting to use an older version of ispVM System, it is always recommended to use the latest version of ispVM System programmer as it will have support for the latest devices and include the most recent bug fixes.
For old version of ispVM System visit the Software Archives Page on this link,
Software Archive (latticesemi.com).
Go to page provided on above link --> Documentation Archive --> Downloadable Software and then search for the ispVM version to download.