How to update to 4.8 when it doesn't show in Check for Update?

Former Member
Former Member

Using Mac Mojave. BaseCamp is version 4.7.0 and - when I go to Check for updates in BaseCamp it says there are no updates.  How do I get the 4.8 update?  Does that update get me to 64 bit so I can update the Mac to Catalina?