RobotStudio event

How can i unpack a station, with different robotware? Version 5.61.08.

Hello members,

I have a station made in a older version of robotstudio and i want to open it into a newer version (2020). 
I installed robotware version in robotstudio 2020, lower i can't install.
I can't unpack the station. He tels me "incompatible version". I understand that the version is older, buth how can i solve this? 
Do i need to use an older robotstudio, and where can i download this?

Kind regards,