I have Earfun pro 2 earbuds those have in debian 12 linux High Fidely Playback (A2DP sink, SBC (XQ) with good stereo sound quality.
But my new Earfun pro 4 only connects as a headset HSP/HFP (CVSD/mSBC) terrible mono audio connection.
Disconnecting / removing en re-pair does not solve the issue .
How do i connect with my earfun pro 4 in a high fidelity audio profile mode in debian 12 linux, the same as with my earfun pro 2?
My sony WH-1000XM5 connect also with HIFI audio profile.
Why is the setup of the pro 4 so much more difficult than the pro2 earbuts i was expecting that with bluetooth 5 support the bluetoth connection would be simpler?