Hi, I have also the same problem.
I have a macbook pro 2010.
bluetooth version software is 4.2
bluetooth firmware is v207 c513
If is the software version.... then I have the good one...(but why does not work then?)
but if is the firmware version then mine is too low
I have a suggestion!!
if the problem with less than 4.0 bluetooth is only the fact that the battery will be much quicker empty... Why don't let us decide if we want or not to used like this?
I don't care if I have to spend more battery!
Let us try to used with what we have!
Just do an update to your software and make it work for everybody!!
or even better!! make two vertions of the software, one for less than 4.0 and the one you already have for 4.0 or more.
What about that?
You can always advise costumers that if they use less than 4.0 bluetooth they will consume more battery.
I really hope you agree with me and want to make the new software for all of us!!
Thanks!