Because TIBCO primarily hosts the latest versions on their official website, finding the exact 6.8.0 build can be tricky. Here are the reliable sources.
Several open-source mirrors keep older versions. The most reliable is SourceForge: download jaspersoft studio 680 work
Verify the file integrity – the SHA-256 hash should be available in the same folder (look for .sha256 or .md5 files). Because TIBCO primarily hosts the latest versions on
If you have a valid commercial license for JasperReports Server 6.8.0: Verify the file integrity – the SHA-256 hash