If you cannot upgrade from Lion, then you are stuck with the version you have.
Upgrading to Yosemite
You can upgrade to Yosemite from Lion or directly from Snow Leopard. Yosemite can be downloaded from the Mac App Store for FREE.
Update Your Firmware The Easy Way. Luckily, the normal Software Update mechanism that most Mac owners are already familiar with can be used to check and update your Mac’s firmware, since Apple distributes most updates that way. Go to the Apple menu in the main menu bar and choose Software Update. To update Safari on a Mac, click on the App Store → Click on Updates → Find the system update → Click on the Update option next to the system update. It is the magnifying glass icon in the upper-right corner of your screen. This wikiHow teaches you how to make a web browser other than Safari your default web browser on a Mac computer. Common third-party browsers include Google Chrome, Firefox, and Opera, but you can set any browser that's installed on your Mac as the default browser. Click Upgrade Now and follow the onscreen instructions to begin your upgrade. If you don’t have broadband access, you can upgrade your Mac at any Apple Store. Upgrading from an older version of macOS? If you’re running High Sierra (10.13), Sierra (10.12), or El Capitan (10.11), upgrade to macOS Catalina from the App Store. Update Safari to version 12.0: What’s New in Safari Safari 12 Safari 12 ships with iOS 12 and macOS 10.14. It is also available for macOS 10.13.6 and 10.12.
Upgrading to Yosemite
To upgrade to Yosemite you must have Snow Leopard 10.6.8 or Lion installed. 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.
Macs that can be upgraded to OS X Yosemite
1. iMac (Mid 2007 or newer) - Model Identifier 7,1 or later Download apple software for pc.
2. MacBook (Late 2008 Aluminum, or Early 2009 or newer) - Model Identifier 5,1 or later
3. MacBook Pro (Mid/Late 2007 or newer) - Model Identifier 3,1 or later
4. MacBook Air (Late 2008 or newer) - Model Identifier 2,1 or later
5. Mac mini (Early 2009 or newer) - Model Identifier 3,1 or later
6. Mac Pro (Early 2008 or newer) - Model Identifier 3,1 or later
7. Xserve (Early 2009) - Model Identifier 3,1 or later
To find the model identifier open System Profiler in the Utilities folder. It's displayed in the panel on the right.
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Are my applications compatible?
See App Compatibility Table - RoaringApps.
If you've upgraded to macOS Mojave or later, follow these steps to keep it up to date:
How to save image on macbook. To find updates for iMovie, Garageband, Pages, Numbers, Keynote, and other apps that were downloaded separately from the App Store, open the App Store on your Mac, then click the Updates tab.
Fnaf 1 online full game. To automatically install macOS updates in the future, including apps that were downloaded separately from the App Store, select ”Automatically keep my Mac up to date.” Your Mac will notify you when updates require it to restart, so you can always choose to install those later.
If you're using an earlier macOS, such as macOS High Sierra, Sierra, El Capitan, or earlier,* follow these steps to keep it up to date:
To automatically download updates in the future, choose Apple menu > System Preferences, click App Store, then select ”Download newly available updates in the background.” Your Mac will notify you when updates are ready to install.
* If you're using OS X Lion or Snow Leopard, get OS X updates by choosing Apple menu > Software Update.
Learn how to update your iPhone, iPad, or iPod touch to the latest version of iOS.