As K Shaffer suggests, maybe you do not have the little bit of extra Snow Leopard update that allows it to download and install El Capitan. Try the combo update: Try the combo update: Update Combo v1.1. A list of OS X 10.11 El Capitan 'combo' updates OS X 10.11 Combo Updates For more information on the difference between normal and 'combo' updates including recommended instructions for installing updates see this article. OS X 10.11.6 Combo Update; OS X 10.11.5 Combo Update; OS X 10.11.4 Combo Update; OS X 10.11.3 Combo Update.
Starting with Firefox version 49, Firefox requires Mac OS X 10.9 (Mavericks) or higher. Visit this Apple Support page to find your Mac OS version. Office 365 for mac cracked.
If you're using an outdated version of Firefox on Mac OS X 10.8 (Mountain Lion) or earlier, the only way you can update Firefox to a secure version is to upgrade your Mac OS to a version that Apple supports. Visit this Apple Support page to learn more about upgrading your Mac.
Mac Os X 10.9 Combo Update
El Capitan Mac Upgrade
OS X El Capitan (10.11) OS X Yosemite (10.10) OS X Mavericks (10.9) OS X Mountain Lion (10.8) OS X Lion (10.7) Mac OS X Snow Leopard (10.6) Mac OS X Leopard (10.5) Supported Configurations Include: FileVault 1 / FileVault 2. Core Storage (Fusion Drive). Flash / SSD drives. Internal / External Volumes. Time Machine Volumes. RAID (Promise, G-RAID. Creators of Mac, iPad, and iPhone productivity software. Proud to bring you OmniFocus, OmniOutliner, OmniGraffle, and OmniPlan. Download Mac OS X El Capitan now from Softonic: 100% safe and virus free. More than 4229 downloads this month. Download Mac OS X El Capitan latest ver. The OS X Lion Update is the final update to Mac’s OS X Lion operating system. As the last release for the OS, it’s recommended by Apple that users update their system to ensure the safest and fastest use possible.
Mac Os X Version 10.9 Update
While insecure versions of Firefox will continue to work on OS X 10.8 and earlier, using an up-to-date version of Firefox on a supported version of Mac OS will provide you with the best and safest user experience.
macOS Big Sur elevates the most advanced desktop operating system in the world to a new level of power and beauty. Experience Mac to the fullest with a refined new design. Enjoy the biggest Safari update ever. Discover new features for Maps and Messages. And get even more transparency around your privacy.
Check compatibility
macOS Big Sur is compatible with the following computers. If your Mac isn't compatible, you might be able to install an old version of macOS instead.
MacBook introduced in 2015 or later
MacBook Air introduced in 2013 or later
MacBook Pro introduced in late 2013 or later
Mac mini introduced in 2014 or later
iMac introduced in 2014 or later
iMac Pro
Mac Pro introduced in 2013 or later
View the complete list of compatible computers.
If upgrading from macOS Sierra or later, your Mac needs 35.5GB of available storage to upgrade. If upgrading from an earlier release, your Mac needs up to 44.5GB of available storage. To upgrade from OS X Mountain Lion, first upgrade to OS X El Capitan, then upgrade to macOS Big Sur.
Download macOS Big Sur
If you're using macOS Mojave or later, get macOS Big Sur via Software Update: Choose Apple menu > System Preferences, then click Software Update.
Or use this link to open the macOS Big Sur page on the App Store: Get macOS Big Sur. Then click the Get button or iCloud download icon.
Install macOS Big Sur
After downloading, the installer opens automatically. Click Continue and follow the onscreen instructions.
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Please allow installation to complete without putting your Mac to sleep or closing its lid. During installation, it might restart and show a progress bar or blank screen several times. You might find it easiest to begin installation in the evening so that it can complete overnight, if needed.
Stay up to date
Update El Capitan To Sierra
After installing macOS Big Sur, you will be notified when updates to macOS Big Sur are available. To check for updates, choose Apple menu > System Preferences, then click Software Update.