Apple typically only offers the latest version of Final Cut Pro on the Mac App Store. However, if you have previously purchased the software, you can often download the last compatible version for your OS: on your older Mac. Go to the Purchased tab (or your Profile). Find Final Cut Pro and click the cloud icon.

Technical Overview and Feature Analysis of Final Cut Pro X 10.4.5 Platform: macOS Distribution Format: .dmg (Disk Image) Report Date: October 26, 2023 (Based on historical release data)

Because 10.4.5 is a point release within the 10.4 cycle, it carries forward the transformative tools introduced in late 2017:

For those looking to understand the broader impact of the 10.4 feature set: Final Cut Pro 10.4 - Hands On Review DeathByVlog YouTube• Dec 15, 2017 Historical Context

The primary goal of version 10.4.5 was to improve performance when generating waveforms for clips that had no audio channels, a specific bug that had previously slowed down workflows for some editors.