So, I'm back again.
As I'm very busy at work, it took me a while to get around to removing and decapping the module.
Here are the photos and my opinion of the module.
In my opinion, it is most similar to the WBR3L, at least as far as the PIN arrangement of the module is concerned.
TX | A_0
RX | A_7
A_19 | EN
A_18 | A_11
A_17 | A_2
A_16/TX | A_3
A_15/RX | A_4
GND | VCC
IC-Model is: RTL8720CF
and I think the journey ends here, or is there a firmware that can be customized?
Best Regards
Hannes