The steps are as follows.

- Copy File.
- Press MENU button,then choose”USB Files “
- Choose the file we need.For example,we select the first file named “树”,press “OK”.Thenpress “3”
- Delete File.
- Press MENU button,then choose”USB Files “
- Choose the file we want delete.For example,we select the first file named “树”,press “OK”.Thenpress “2”
The video is as follows.