Well, this is quite an older version. I am afraid, you cannot download any version which is older than 1 year. You can only download versions which are released within 1 year from current date backwards. This is our policy and we have to abide by it. We recommend you to upgrade your code to latest version (e.g v8.4.2) because latest versions contain lot of fixes, enhancements and new features. Also, we do not fix the issues found in older versions. We only fix the issues found in latest versions.