Win10 preview version upgrade 9879 detailed steps

The Win10 system preview version will continue to be adjusted after the release. After the adjustment, the release version numbers such as 9860, 9888, etc. will be used for public experience and testing. The 9879 version number has been released. How to install it?
After downloading the image, open the ISO image (Note: Double-click on Win8/8.1, Win7 virtual disk drive can be loaded in Win7), directly run setup.exe in the mirror root directory, as shown below.

▲ Accept the license terms

▲ Check the installation environment. This may take a while, depending on the amount of software in the system you are currently using