Download macOS Catalina 10.15.3 Update

System Requirements: macOS Catalina 10.15.2

File Size: 2.99 GB

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The macOS Catalina 10.15.3 update improves the stability, reliability and security of your Mac, and is recommended for all users.

This update:

  • Optimises gamma handling of low grey levels on Pro Display XDR for SDR workflows when using macOS

  • Improves multi-stream video editing performance for HEVC- and H.264-encoded 4K video on the 16-inch MacBook Pro (2019)

For more detailed information about this update, please visit: https://support.apple.com/kb/HT210642

For detailed information about the security content of this update, please visit: https://support.apple.com/kb/HT201222

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