Bought my Macbook Air in April 2012. Just went and purchased AppleTV but found that I am unable to use the mirroring function. Can downloading the latest Mountain OS (mine is 10.7.5) enable this mirroring function? What else can I do?
I'm under the impression that the built-in AirPlay Mirroring functionality is specific to Mountain Lion. Which is OS X 10.8.x (current version is 10.8.2)
While I think it's always a good idea to run the most up-to-date software, unless a 3rd party application has a known conflict, updating will not enable this function in Lion.
I've used AirParrot - http://airparrot.com
It's $9.99, so 1/3 the price of Mt. Lion.
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