Avid recommends performing a clean uninstall of your current Pro Tools version before running the 10.3.10 installer.

Avid Pro Tools HD 10 remains a cornerstone software for legacy recording studios worldwide. Maintaining stability on older macOS environments requires specific updates. The Pro Tools HD 10.3.10 R3 Hotfix is a critical patch designed exclusively for Mac users running this specific Digital Audio Workstation (DAW) version. Purpose of the R3 Hotfix

The specific or glitches you are trying to resolve

Apple computers, such as the Mac Pro Nehalem (4,1) or later for Mountain Lion support. (8GB recommended). Essential Installation Guide

The Avid Pro Tools HD 10.3.10 R3 Hotfix includes several key features and fixes, including: