how do I update from ios 10.8 to yosemite
how do I update from ios 10.8 to yosemite
MacBook Pro (13-inch Early 2011), OS X Mountain Lion (10.8.5)
Make a cloned backup of your current system should you want to go back or if the upgrade isn't successful.
Upgrading to Yosemite
Download Yosemite from the App Store. Sign in using your Apple ID. Yosemite is free. The file is quite large, over 5 GBs, so allow some time to download. It would be preferable to use Ethernet because it is nearly four times faster than wireless.