It turns out there was an incompatibility with OS X version 10.6.6 and the Plantronics headset, that wouldn't let it be recognized as an audio device no matter what I tried. Connecting the Plantronics Voyager to my iPhone was a complete breeze, but getting it to work with my computer took a little persistence and eventually an operating system upgrade to Mac OS X 10.6.8. That means I can use it on the road for hands-free phone conversations in my car, and I can also use it for Skype calls on my computer (or with my VoIP softphone that lets me dial anywhere in the world over the internet, without paying long distance rates).
I recently acquired the Plantronics Voyager PRO because it lets me connect with both my iPhone and my computer. Plantronics makes top-rated bluetooth headsets that are super light, sound great, and look really cool. When I am going to download latest version of macOS Sierra it was showing that 10.7.5 OS is required for what to do please help me. So anyone of you may tell that how can I upgrade my OS from 10.6.8 to latest version. I am using Mac OS 10.6.8 version but some software are not compatible with this version for example latest version of Skype.
