: This is the last version to support legacy 32-bit plugins (TDM and RTAS). Modern 64-bit systems (macOS Catalina and later) cannot run this software. Gatekeeper Support

You should only use this hotfix if you are preserving a "vintage" studio setup with specific TDM hardware that you refuse to decommission. If you are building a new studio, this is a historical artifact, not a solution.

: If you are using a "hotfix-only" file, ensure you already have the base 10.3.10 installation. If it is the full 10.3.10 installer, it will replace existing 10.x versions.

: Avid typically recommends a clean uninstall of previous versions before applying the 10.3.10 full installer to ensure legacy drivers and permissions are correctly handled.