After running the install on an RPi and having it fail to install DS4 the RPI was left in a state without openssh server. If you then lose connection (which happened to me several times) you then can't ssh back in.
Can you explain this more. How does the RPi stuck in a stage without openssh server? Did your RpI ssh timeout? Is the SSH server still running if you connect directly to the Rpi with a monitor ?
After running the install on an RPi and having it fail to install DS4 the RPI was left in a state without openssh server. If you then lose connection (which happened to me several times) you then can't ssh back in.