Download Raspberry Pi Imager for your operating system from the list near the top of this page. Click “CHOOSE OS” and select “Misc utility images” then “Pi 4 EEPROM boot recovery”. Insert an SD card, click “CHOOSE SD CARD”, select the card you have inserted, then click “WRITE”.

Is your Mac up to date with the latest version of the Mac operating system (macOS or OS X)? Is it using the version required by some other product that you want to use with your Mac? Which versions are earlier (older) or later (newer, more recent)? To find out, learn which version is installed now.

If your macOS isn't up to date, you may be able to update to a later version.

Which macOS version is installed?

1. OS X Mavericks (version 10.9) is the tenth major release of Mac OS X (now named macOS), Apple’s desktop and server operating system for Macintosh computers. OSX Mavericks is an impressive operating system which has come up with lots of new features and updates. With OSX Mavericks you can now take the whole world on your desktop.
2. Apple Mac OS X El Capitan Free VIEW →. OS X El Capitan features new options for managing windows, smarter Spotlight search, app enhancements, and faster performance.

From the Apple menu  in the corner of your screen, choose About This Mac. You should see the macOS name, such as macOS Mojave, followed by its version number. If you need to know the build number as well, click the version number to see it.

This example shows macOS Catalina version 10.15 build 19A583.

Which macOS version is the latest?

These are all Mac operating systems, starting with the most recent. When a major new macOS is released, it gets a new name, such as macOS Catalina. As updates that change the macOS version number become available, this article is updated to show the latest version of that macOS.

If your Mac is using an earlier version of any Mac operating system, you should install the latest Apple software updates, which can include important security updates and updates for the apps that are installed by macOS, such as Safari, Books, Messages, Mail, Music, Calendar, and Photos.

Free Apple Operating System Download