On Mojave 14.3 (upgrading beyond .3 on Mojave caused my machine to brick for reasons unknown). Trying to download Catalina through Settings > Software Update. Download completes. Next thing that shows up is a pop up window saying "The Download Could Not Be Verified." Sounds like an MD5/SHA1 checksum failure or something like that but have no way to confirm or control. Any suggestions for a fix?
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