That link provides a link to download an older version of dfu-programmer 0.5.4 (0.7.0 is not available)
It also explains how to use it.
However it does not explain how to install it.
How do I install duf-programmer?
The readme file is not helpful.
./bootstrap.sh appears to do nothing because I continue to the steps of using dfu,
and I get "sudo: ./dfu-programmer: command not found"