Rhinoceros : Open any Rhinoceros file and change It's version without having Rhino. Free rhino file converter

Recently there was the need to Open certain Rhino8 files but we did not have a license. So I have created a software that enables you to open Rhino 8 files using Rhino 4, and convert any basically any rhino file into any Rhino version. You do not need Rhino for this software to work.
This software was created using Rhino3DM libraries.
This software is available for free, copyrighted by Farouk Serragedine.
This software is intended to be free, no commercial usage is allowed

Download : 7.5 MB file on MEGA

sounds like Rhino 3dm file version converter

And this - Convert3dm | Food4Rhino