Synology NAS Package 1.5.2

I use an Synology DSM 5.2 in a Hyper-V virtual machine. (It's not possible to upgrade it to DSM 6.0)
What I have seen the Servioo 1.5.2 is the only package that works on DSM 5.2.
Can anyone tell my where I can download this package?

Thank you for any hint.

[atc98092]

If you copy the download link for the current version, and then edit the version number, it should still be available for download. That's the only way I know of to get a previous version.