![]() It automatically figures out what update(s) you need, so this question is a bit moot. Updates come via the Software Update mechanism, either in System Preferences or with the softwareupdate command. One major recent change is that, starting with macOS Big Sur (aka macOS 11), Apple isn't releasing OS updates in downloadable format. UPDATE: There's a complication I left out, and some other things have changed and gotten messier since I originally wrote this. ![]() ![]() (Mind you, the types of problems this solves are rare but they tend to be ones that otherwise would've involved hours of troubleshooting and hair-tearing, so it's often worth a try.) (Also, you can't/shouldn't reinstall even a combo update after applying a supplemental or security update that came out after it that'd be a downgrade, and might cause problems.) In fact, sometimes re-running the combo on an already-updated computer will fix problems like this, so it's a useful trick to have in your troubleshooting repertoire. If anything has gone wrong with any of the previous updates, running the combo will generally clean up the problem, while a delta might leave it broken. It's simplest to just carry the combo update and not worry about the deltas as well, since you can use the combo anyplace the delta would be appropriate. I update a lot of computers, so to save time I carry the latest updates on my tools HD. But some people (myself included) tend to prefer the combo, for a couple of reasons: If you have a Mac that's running the next-to-latest version and want to update it, the delta is technically all you need. 10.8.1 or 10.7.1, there's no real distinction between delta and combo, so Apple only publishes a single update form.) (Note that for the first update to a major version, e.g. Similarly, the 10.7.5 combo update can be run on anything from 10.7.0 to 10.7.5. A combo update containing all of the changes since the original release of that major version, and therefore can be used on anything from the same major version.įor example, the 10.8.2 combo update can update from either 10.8.0 or 10.8.1 it can even be reinstalled on a system that's already running 10.8.2.A delta update containing all of the files that changed in the latest update, which therefore can only upgrade from the immediately previous version.įor example, in order to install the 10.8.2 delta update, your system must already be updated to 10.8.1.10.8.1 -> 10.8.2), they generally release the update in two forms: The updates to Final Cut Pro X and iMovie are also about fixing bugs.When Apple releases a minor system version (e.g. For detailed information about the security content of this update, please visit: Some features may not be available for all regions, or on all Apple devices. Addresses a graphic issue that may occur on iMac (Retina 5K, 27-inch, 2020) with Radeon Pro 5700 XT.Fixes an issue that could prevent files syncing through iCloud Drive.Resolves an issue where macOS would not automatically connect to Wi-Fi networks.MacOS Catalina 10.15.7 provides important security updates and bug fixes for your Mac. Want it straight from the source? Here are Apple's release notes for macOS Catalina 10.15.7: ![]() ![]() The Catalina update is a modest one that fixes three bugs: a graphics-related problem on new iMacs with Radeon Pro 5700 XT graphics cards, a bug that prevented automatic connection to Wi-Fi networks, and an iCloud Drive syncing issue. The company also released new versions of Final Cut Pro X and iMovie for the Mac. It's likely the last update to Catalina before Big Sur is released. Further Reading Apple’s first iOS update after iOS 14 just hit, and it fixes resetting app defaultsHowever, Apple nonetheless followed up today with an update for macOS Catalina labeled 10.15.7. ![]()
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