If you want to view high-definition bonus content for movies, you must be running OS X 10.10.3 (Yosemite) or later.
The primary reason to specifically seek out iTunes 12.4.3 for OS X is to fix a critical bug found in earlier builds. This update resolves an issue where made on other devices (like an iPhone or iPad) would fail to sync or appear in iTunes on your Mac. Official Download Link
If you are managing an older Mac running OS X, you might find that modern versions of iTunes are no longer compatible with your operating system or that your device specifically requires . Released originally in August 2016, this version remains a critical update for users who need a stable media manager for older hardware. Why Download iTunes 12.4.3? download itunes 12.4.3 for os x
Approximately 400 MB of available space is required.
For those on older versions like or Yosemite , iTunes 12.4.3 remains one of the most stable builds for day-to-day media management. Your Blog - Christina Kent - Wikidot If you want to view high-definition bonus content
Download iTunes 12.4.3 for OS X via Apple Support. System Requirements & Compatibility
You should always download software directly from Apple to ensure security and file integrity. Official Download Link If you are managing an
If you are trying to sync a newer device running iOS 11 or later, iTunes 12.4.3 may not be sufficient; you typically need at least iTunes 12.6.3 for full compatibility with newer mobile software. How to Install