Files with this naming convention ( .rar with a specific date and "update" tag) often originate from unofficial sources. Before running any executable, it is highly recommended to: Scan the file with VirusTotal.
If you have downloaded this update, follow these general steps to apply it to your game: JCB.Pioneer.Mars.Update.09.07.2020.rar
Copy it to a safe location to avoid losing progress if the update fails. Files with this naming convention (