Where to download the historical versions of SDK?

Dear all, is anyone know where to download the historical versions of ARDK? As the developers can only download the newest version. Many thanks for any help and replys!
Yours, Xuelei

Hi Xulei,

Apologies, previous/historical versions are not available for download. We have raised a feature request for this. Please keep an eye on the Lightship Community Forum for future updates. Thanks.