原先的虛拟機裡的xcode裡的sdk12.1(16B91)的版本是我從apple官網下載下傳的xcode10.1裡拷貝出來放到我的xcode中的,但是再新的虛拟機裡的xcode中的12.1是我偷懶從網上下載下傳下來的,估計是測試版的,而apple官網裡的是正式版的,是以,替換完了之後就ok了,就沒再提示我
Could not locate device support files.
This iPhone 6 is running iOS 12.1 (16B91), which may not be supported by this version of Xcode.