MAC 2008 Catalina 10.5.2 update or upgrade how to
MAC 2008 Catalina 10.15.2how to update or upgrade
MacBook, macOS 10.15
Hmmmm, which exact MackBook do you have?
None of the 2008 MacBooks can run Catalina‽
The earliest MB 2008 can only go as far as 10.7.5
The Late MB 2008 can only go as far as 10.11.6
10.5.x is Leopard.:)