macOS Catalina build 19C56a
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macOS Catalina build 19C56a is the official Beta 4 build of macOS Catalina 10.15.2, released on 6 December 2019.
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| Timebomb | |
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macOS Catalina build 19C56a is the official Beta 4 build of macOS Catalina 10.15.2, released on 6 December 2019.