How revert from release 20260326 to 20231214

[pedal_pusher@mac.com]

I had been using my HD Homerun on an old Mac. using OS 10.15.8, and it worked great! >>Note: this Mac is on the latest OS available given its age <<

I inadvertently downloaded the newest version before realizing it only works on OS 11 and later.

How can I get back the 2023(?) version of the software?

Thank you!