Thanks for your informative post.
My main confusion is that one member tells me the free version can’t be updated, the other one telling me it can be updated .
Are you trying to say that the software can be updated but that the (reported) sailfish version won’t change?
My install is quite fresh (about 6 months old) and i’ve never added/removed/enabled/disabled any repo’s, so i assume it’s ok. Is there a way to verify that?