+1 for Valetudo, not only does it work, but it is also maintained and keeps getting better. Moreover old vacuums are still maintained as new ones are added
Yup, my first gen roborock is still trundling along quite happily because of Valetudo. Would be nice if the base ubuntu was updatable but as it's offline except for a connection to a homeassistant instance it's probably safer than 99% of IOT devices