I'm just quoting Google so may be wrong!
If it is the case that all the D1 stations have formally moved over to DAB+ and its an issue with the actual units for pre 2018 models, then not sure what Audi can do, and I'd imagine there'll be a cost to upgrade the unit.
The switch over is on the Digital radio companies rather than the manufacturers I believe.
I'm just using the Global Player App and bluetoothing that through Media for the time being.
Rob
Just on the DAB+ thing, and I'm no expert on these things, but I listen to Radio X every day (or did until this) from the D1 National channels, and they switched over to DAB+ in 2019, so I'm not sure it's that.
Rob
Just to add I have a 66 plate Audi A6 SE Executive and mine too has had the same issue since early last week.
Incredibly frustrating. Spoke to our local Audi Specialists where I take my Audi for all my maintenance works and they've heard of nothing so far.
They logged onto their portal with Audi to check their latest bulletins, but there was nothing on there yet.
Will upload a photo of my Firmware/Software Version later.
Rob