Deconz -- Incompatible Hue ambient bulb

Wondering if anyone has run into this…

Was pairing two new Hue ambient bulbs – one was found immediately by Deconz (Phoscon), the other remains stubbornly offline. A quick inspection of the bulb themselves reveals I may have an updated model: the working bulb (as well as several others in the house that work fine) is listed at 570 lumen; the non-working bulb is listed at 800 lumen.

Anyone get one of these working, or is this just a fundamental incompatibility with Deconz?