The Silhouette Connect is compatible with Silhouette Portrait, but it's not mentioned what are the versions required. On the FAQ section provided by the developers, there is a page where compatibility is explained.
I recommend you access this link to see exactly what's all about. Eventually, install both versions 1.2 and 1.3 to test them or reach out to the developers to ask them about compatibility.
The Silhouette Connect is compatible with Silhouette Portrait, but it's not mentioned what are the versions required. On the FAQ section provided by the developers, there is a page where compatibility is explained.
I recommend you access this link to see exactly what's all about. Eventually, install both versions 1.2 and 1.3 to test them or reach out to the developers to ask them about compatibility.