Great, thanks for the information.
I have upgraded a few boards here. Now the behavior I got is, after connection the .getDataRate() returns correctly. But being not connected, it stills returning -1.
My lib was already at 1.0.9, but both batches (Oct and Dec) had 1.1.2 (as I saw the first stable version!) and now I upgraded to 1.1.9.
Thanks again.
Marcio Jr.