latitude 5490 10.15.4 20210220

基本完成，可以使用。

20201229

stable efi of hackintosh machine now i own.

catalina 10.15.3 release

all support catalina 10.15.3, all properly settled.

catalina 10.15.2 stable

20200102

t450: clean files

archived .zip efi files

4 hackintosh efi file zipped.