Cannot disable system update

[zalle]

Hello,

My System preferences icon keeps showing 1, and it's the Monterey update. I don't want to update to Monterey (from Big Sur), how can I make it stop telling me to update? I've disabled automatic updates...

Thanks

 

[bogdanw]

You can try with a configuration profile like this:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>PayloadContent</key>
    <array>
        <dict>
            <key>PayloadDisplayName</key>
            <string>Restrictions</string>
            <key>PayloadIdentifier</key>
            <string>com.apple.applicationaccess.CFAAD536-CAC6-4DE7-9273-BA534AEFA69D</string>
            <key>PayloadType</key>
            <string>com.apple.applicationaccess</string>
            <key>PayloadUUID</key>
            <string>CFAAD536-CAC6-4DE7-9273-BA534AEFA69D</string>
            <key>PayloadVersion</key>
            <integer>1</integer>
            <key>enforcedSoftwareUpdateMajorOSDeferredInstallDelay</key>
            <integer>90</integer>
            <key>forceDelayedMajorSoftwareUpdates</key>
            <true/>
        </dict>
    </array>
    <key>PayloadDisplayName</key>
    <string>Defer Major Software Updates</string>
    <key>PayloadIdentifier</key>
    <string>Mac.09248A92-3DCA-442F-A078-E5D6B697B1B3</string>
    <key>PayloadScope</key>
    <string>System</string>
    <key>PayloadType</key>
    <string>Configuration</string>
    <key>PayloadUUID</key>
    <string>09248A92-3DCA-442F-A078-E5D6B697B1B3</string>
    <key>PayloadVersion</key>
    <integer>1</integer>
    <key>TargetDeviceType</key>
    <integer>5</integer>
</dict>
</plist>

I've explained more here https://forums.macrumors.com/thread...de-notification-forever.2367582/post-31689711