It provided essential fixes for the "sandbox" vulnerability and various kernel issues.
Use the createinstallmedia command in Terminal to flash the installer to the USB. How To Create A Bootable MacOS Catalina Install Drive macOS Catalina 10.15.7 Download Hub. 1 de out...
This usually happens if your Mac is older than 2012. However, if your Mac is compatible, reset the NVRAM (Command+Option+P+R at startup) and try again from the download hub. It provided essential fixes for the "sandbox" vulnerability
If you are already running Catalina and just need the 10.15.7 patch, you can use standalone installers: Standard Update : For systems already on version 10.15.6. if your Mac is compatible