Download Updaters for macOS 10.15.5 delta and Combo, and Security Update 2020-003 for macOS 10.14.6 and 10.13.6
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macOS 10.15.5, Safari 13.1.1, Security Update 2020-003 for Mojave & High Sierra
macOS 10.15.5 available via software update or download links below.
(Also below are Downloads of Security Update 2020-003 for 10.14.6/10.13.6.)
Here's details from the macOS Catalina 10.15.5 release notes.
"macOS Catalina 10.15.5 introduces battery health management in the Energy Saver settings for notebooks, a new option to disable automatic prominence in Group FaceTime calls, and controls to fine-tune the built-in calibration of your Pro Display XDR. The update also improves the stability, reliability, and security of your Mac.

Battery Health Management

  • Battery health management to help maximize battery lifespan for Mac notebooks.
  • Energy Saver preference pane now displays battery condition and recommends if the battery needs to be serviced.
  • Option to disable battery health management.
  • For more information, please visit
    (About battery health management in Mac notebooks.)

    FaceTime Prominence Preference

  • New option to control automatic prominence on Group FaceTime calls, so video tiles do not change size when a participant speaks.

    Calibration Fine-Tuning for Pro Display XDR

  • Controls to fine-tune the built-in calibration of your Pro Display XDR by adjusting the white point and luminance for a precise match to your own display-calibration target.

    This update also includes bug fixes and other improvements:

  • Fixes issue that may prevent password entry on the login screen.
  • Fixes stability issue when transferring large amounts of data to RAID volumes.
  • Fixes issue that prevented Reminders from sending notifications for recurring reminders.
  • Fixes issue where System Preferences would continue to show a notification badge even after installing an update.
  • Fixes issue for Macs with T2 Security Chip where internal speakers may not appear as a sound output device in Sound preferences.
  • Fixes issue where the built-in camera may not be detected when trying to use it after using a video conferencing app.
  • Fixes stability issue with uploading & downloading media files from iCloud Photo Library while Mac is asleep.
  • Fixes an issue where the Reduced Motion Accessibility preference did not reduce the speed of animations in a Group FaceTime call.

    Enterprise content:

  • Improves performance on certain Mac models when enabling hardware acceleration in GPU-intensive apps such as those used for video conferencing.
  • Fixes issue where Microsoft Exchange accounts were unable to sign in during account setup when using Conditional Access.
  • Fixes issue that prevented some displays connected to 2019 16" MacBook Pro from waking from sleep when the Mac wakes.
  • Apple Push Notification Service traffic now uses a web proxy when specified in a PAC file via the Proxies payload.
  • Major new releases of macOS are no longer hidden when using the softwareupdate(8) command with the --ignore flag.
    (This change also affects macOS Mojave & High Sierra after installing Security Update 2020-003.)"
  • Also released are Security Update 2020-003 Mojave, & Security Update 2020-003 High Sierra (downloads below). Here's the article on security fixes in macOS 10.15.5 and Security Updates 2020-003 for 10.14.6/10.13.6. (macOS 10.15.5 includes Safari 13.1.1, also available for macOS 10.14.6 & 10.13.6.)

    FYI: If you use Nvidia's web graphics drivers for 10.13.6, the Security Update's new build number requires a driver update. (Update: See below for June 3rd Nvidia driver update.)
    Nvidia Graphics Driver Update for macOS 10.13.6 (build w/Security Update 2020-003)
    June 3, 2020 download page of graphics driver 387. for macOS 10.13.6.
    (No build number listed, but assumed for June 1 Security Update 2020-003 build 17G13035.)
    As before, download page info includes this installation note.
    "Installation Note: The installer requires System Preferences to be launched during the installation process. Do not manually close System Preferences until after clicking Allow in the Security & Privacy Preferences, later in the process.

    The installer also requires rebooting the system after the installation process. Do not launch any other applications until the process is complete and the system has been rebooted.

    New in Release 387."
    (No new info, same notes on D/L page as previous drivers, so I won't repeat it here.)

    The "Additional Information" tab on the download page has a step-by-step install guide.
    If you can't select the page's 'Accept' terms/conditions button, here's a direct download link.
    (As of post time, the above driver download page's CUDA link goes to CUDA 418.105 from Feb. 27th, 2019, but the latest Mac CUDA download as of 6/3/2020 is CUDA 418.163 from May 10th, 2019 - or check for a CUDA update in the Nvidia prefs.)

    Previous macOS Nvidia drivers are on our Mac Nvidia Drivers downloads page.

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