So, can I download an older version of the Synology package and downgrade?
Answering myself: I’ve now uninstalled PMS version 1.18.3.2156 and reinstalled the PMS package from Synology Package Center, version 1.16.5.1552.
The library and settings are back again, no need to reconfigure, however, Sonos still does not stream as already mentioned here
Obviously this is a different issue I’m facing than the OP…
