1.0.48

To install CNC CAM extension for Blender, download CNCCAM.zip and don't extract it. In blender, go to preferences, Get Extensions, and select 'install from disk' and select the blendercam.zip file you downloaded

1.0.27

This is the last update for blender 4.1 and below. To install BlenderCAM, download blendercam.zip and don't extract it. In blender, go to preferences, add-ons, and select 'install from file' and select the blendercam.zip file you downloaded