To download the Denodo 8 with the latest patch, you can login to your [Denodo Support](https://support.denodo.com/) site account. Navigate to Downloads > Installers to download the Denodo 8 installer. Subsequently, navigate to Downloads > Updates to download the latest updates. And lastly, navigate to Downloads > Licenses to download your license.
You may also want to contact Denodo Support to be able to better assist you in the upgrade process.
Hope this helps!