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upgrade error

  1. mariasmac

    Cant upgrade due to battery issue - please help!

    I have a macbook air late 2012 model and i am still running the ancient version of Mavericks 10.9.5. Awhile back there was an accident where i split some water on my mac air and it fried the battery, so now i have to keep the thing plugged in if i want to use which it works great. Recently due...