• Run _TestPackageManager in Rhino
• Search for Ibra
• Download and Install IbraExport and IbraImport

• Download Rhino-Ibra.zipfrom the latest release
• Unblock the zip-file (right-click the file > Properties > Unblock > OK)
• Extract the content of the zip-file
• Drag the two rhp files into the Rhino window

If you use Rhino-Ibra, please refer to the official GitHub repository:

@misc{Rhino-Ibra,
  author = "Thomas Oberbichler",
  title = "Rhino-Ibra",
  howpublished = "\url{http://github.com/oberbichler/Rhino-Ibra}",
}