[doublepost=1562101947][/doublepost]No problem here getting full installer for DP3 (15.0.17 @ 6,818,977,550 bytes)
I know, I meant the Catalina's SystemPreferences "Software Update" now OTA updates are available from apple supported Mac without downloading the full installer, personally I prefer the OTA updates especially during beta stages.
However in the OP there is the Czo softwareupdate's source code, I am not skilled in that, maybe someone may take a glance and re-enable the OTA updates from "Software Update".
I mean till "Mojave unsupported Mac" this OTA feature worked.
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