Fear not, you are on the very latest firmware for your product!
We have released various different software updates in last 10 days, so the confusion is understandable.
Uniti Atom (inc Atom HE), Star and Nova, plus ND 5 XS 2, NDX 2 and ND 555 now have Firmware 3.7, adding TIDAL Connect functionality
First-Gen Mu-so and Qb now has Firmware 2.0.0, which enables continued use of TIDAL ahead of the streaming service changing its login process in December
Original Uniti and legacy streamers have Firmware 4.8 to address the same TIDAL issue.
Mu-so 2nd Generation family gets TIDAL Connect support in coming weeks.
Oh, and there have been Naim App updates, too - everyone should now be on 5.22.1 (Apple iOS) or 2.22.1 (Android)
Edit: or just look at @Suedkiez screenshot above 