The beta isn't automatically installed. That's why it is a beta. Better inform at the WIIM forum https://wiim.community.forum/
Seems they might have fixed the issue I was having.
TIDAL MQA unfolding coming to WiiM Mini ?
I see MQA unfolding is now available in Beta. With a WiiM Mini. As Devialet has no MQA abilities should users select decoder and renderer? thanks! ~P You should select no MQA support if your DAC cannot help with MQA unfold at all.
wiim.community.forum
On the Wiim app on my phone it says MQA beta, but I understand there is a white list you must join to get the recent fix mentioned in the link above.