The front page says it is
VERSION: 3.251
RELEASE DATE: 31-03-2022
My Volumio Primo box is on 3.233 (24-02-2022) and it is not upgradeable.
Factory reset resets to the same 3.233, although this is not the version it was bought with.
I hope they will fix the bugs, some day.
I already opened the ticket on this topic - silence.
Does anyone else have the same experience?