What do you mean not possible to reinstall the OS? They don't make it easy, but ...

		zootam on Dec 28, 2019 \| parent \| context \| favorite \| on: Sonos's “recycle mode” intentionally bricks device... What do you mean not possible to reinstall the OS? They don't make it easy, but you can download older OSX images from apple's servers (Sierra, Yosemite, etc..) and install them with some effort. Not impossible.