Agree to the terms and select the destination disk.
The initial 10.15.7 release was followed by a critical Supplemental Update (Build 19H15) that fixed security flaws and iMac graphic issues.
After you install the base 10.15.7 installer, Apple released two supplemental updates: one in October 2020 (fixing iCloud Drive) and another in November 2020 (security patches). To apply these: macos catalina 10157 installer upd
The macOS Catalina 10.15.7 update is a significant one, with a range of enhancements and fixes that aim to improve the overall user experience. Here are some of the key changes:
Before diving into the technical steps, it is crucial to understand that is not just another update. It is the final, fully polished version of macOS Catalina. Apple released 10.15.7 in September 2020, and followed it with supplemental updates (10.15.7 Supplemental Update) to address security vulnerabilities and Wi-Fi connectivity issues. Agree to the terms and select the destination disk
The safest route is to use Safari to trigger the native installer download.
Double-click "Install macOS Catalina" in the Applications folder. To apply these: The macOS Catalina 10
A progress bar will track the download directly to your applications catalog. Creating a Bootable USB Installer
Your Mac will restart automatically during this process. The screen may go black or display a progress bar multiple times. Do not shut down or close the lid of your laptop during this phase. Once complete, follow the on-screen prompts to set up iCloud, Screen Time, and your preferred system theme. How to Create a Bootable USB Installer
: Fixes a bug that prevented files from syncing correctly through iCloud Drive.