Catalina 10.15.6 Supplemental Update Released! The update includes a fix for virtualization memory leak issues.

[ClassicII]

Today Apple released the 5th Supplemental Update for macOS Catalina. This time around, the fix is for memory leaks/KP's with virtualization software. The other fix has to do with the brand new 2020 5k 27-inch iMac, graphics washed out after waking from sleep.

Apple also unified the full installer (adding 2020 iMac) and updated the 10.15.6 combo and delta updaters.

Apple released the supplemental update with a build version of 19G2021. A four digit daily build number is usually only reserved for a hardware specific or forked build. So it's pretty strange that they would do that.

https://mrmacintosh.com/catalina-10-15-6-supplemental-update-19g2021-released/

[TheWarmAtlantic]

@ClassicII Where can I download the 19G2021 full installer? The App Store and softwareupdate fetch are still brining down the installer from July.

[MadMacs]

When will Patch Management support this supplemental Update build # change?

[mbezzo]

Anybody find an updated full installer yet?

[thomH]

Hi

Get Greg Neagles macadmin scripts : repo
run the installinstallmacos.py and this new build will be one of the download choices.

[mbezzo]

Fantastic, thank you!

[sdagley]

In case anybody else happened to be in the middle of caching the Install macOS Catalina app to their Macs running Mojave in anticipation of doing a bulk upgrade to Catalina the following EA will be helpful to determine the macOS build number the app will install (Apple didn't bump the version number in the installer app's bundle between 19G73 and 19G2021)

#!/bin/sh

# EA-GetmacOSCatalinaInstallerVersion.sh
#
# Returns the Build Number for Install macOS Catalina.app if it's build 19G73 or 19G2021,
#   or Unknown for other builds.
# Returns Not Installed if Install macOS Catalina.app isn't in the /Applications folder on a system

FileToCheck="/Applications/Install macOS Catalina.app/Contents/SharedSupport/BaseSystem.chunklist"
ChecksumBuild19G73="902d05e756a15c34f7beccc981f9ab93b7f81fc109dbc78f94f31078833e3fe6f1261247aa0d2b13192d623dd72004cf5dadaec09671707b8c9744558a8db37c"
ChecksumBuild19G2021="8c139953d07f866a7530e689a5ef0de022e0012fd51a042400d6d9aa33513239e62807f2e52b047cd2541561864e94a21abcd14a94df976b4951274be0695a3b"

result="Not Installed"

if [ -e "$FileToCheck" ]; then
    fileChecksum=$(/usr/bin/shasum -a 512 "$FileToCheck" | cut -f 1 -d " ")

    if [ "$fileChecksum" = "$ChecksumBuild19G73" ]; then
        result="19G73"
    elif [ "$fileChecksum" = "$ChecksumBuild19G2021" ]; then
        result="19G2021"
    else
        result="Unknown"
    fi
fi

echo "<result>$result</result>"

[carlo_anselmi]

@sdagley Hello, now that 10.15.7 is out, what would be the "ChecksumBuild19H2" ?
Or did they change the installer version number this time?
I have found this page but the results for previous builds are completely different compared to yours (which work just fine)
apple-installer-checksums
Many thanks for your EA!!!!
Have a great weekend everyone
Carlo

[carlo_anselmi]

@sdagley yes, I was too quick, they did change the installer version. Now it's 15.7.02
Thank you