Usually Data Protector patches can be found on the entry point of HP Data Protector website (Link)… To download patches you now need an HP passport account (you need to have a SAID for that). The link below still works, however you would download old versions

Please do not use anymore.
http://h20000.www2.hp.com/bizsupport/TechSupport/DriverDownload.jsp?lang=en&cc=us&prodNameId=4085364&taskId=135&prodTypeId=18964&prodSeriesId=3889913&lang=en&cc=us