They might be too old. I believe another forum member had non BT speakers with serial H21. You should contact Devialet, I don't think they will be fuzzy about sending you a BT dongle. I believe the newest firmware for Dialog is 1.3.0.30
Living room: Kii Three/BXT with Control.
Den: Tannoy Precision 8 iDP with TS112 iDP subwoofer.
In the cupboard, waiting for a sibling: 1st gen. Phantom Silver running DOS1
My Phantom Voyage
Den: Tannoy Precision 8 iDP with TS112 iDP subwoofer.
In the cupboard, waiting for a sibling: 1st gen. Phantom Silver running DOS1
My Phantom Voyage