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I like to upgrade my iMac late 2015 from Mojave 10.14.6 to Catalina. I can find Mac OS Catalina 10.15.1 but when I try to upgrade I get the message "You'll need Mac OS 10.15"! I can't find an earlier version of Catalina than 10.15.1. What can I do?
/Christer
iMac Line (2012 and Later)
Upgrading from Mojave 10.14.6 to Catalina?
