This short guide will show you how to upgrade from the OS X El Capitan beta to the final version of OS X El Capitan. The general release of OS X 10.11 is slightly different from the last beta release, although Apple delivered a nearly complete GM in early September.
You can use it if you are in Public Beta, Developer Beta, or have just downloaded the OS X 10.11 installer from a third party.
You don’t need to do a clean install of OS X El Capitan, but you can use these instructions if you want to.
However, to be safe, we recommend taking steps to prepare your computer for OS X 10.11, including backing up your files on Time Machine or another service.
How to Upgrade from OS X El Capitan Beta
You’ll need a charged computer, Internet access, and your Apple Store ID and password.
Plan to spend about 30 to 60 minutes on this process, where your computer will reboot multiple times.
Once this is done you will be on the public version of OS X El Capitan. If you don’t go this route, you can try the next OS X update early, as Apple is currently beta testing OS X 10.11.