: Pro Tools 12.8.3 is a full installer , not just an updater. This means you do not need a previous version already installed to use it.
If you absolutely must have the old updater for hardware reasons, head to the and search for "Digidesign Pro Tools 6.4.1." The "128.3" file is likely hiding inside a folder named "Legacy Updates." pro tools 128 3 mac download upd