Android always appears. It always appears for a few minutes Android Open Source Project a new integration for developers to try the latest version of the app. Now to simplify installing a AOSP ROM Google is getting started Flash Tool for Android.
It is a web tool , as the name implies, is used to install AOSP ROMs on a compatible Android device. Currently the requirements should be no Pixel 2, Pixel 3, Pixel 3a or Pixel 4 in any of its variations. It also allows updating HiKey and HiKey 960 boards.
Flash Tool for Android
Flash Tool for Android It's easy to use. We just have to access the Flash Tool for Android and connect the compatible Google Pixel to the computer via cable. USB debugging
Flash Tool for Android It will handle the whole installation process. It will download and install the ROM without opening the bootloader or changing the recovery.
This tool requires an active WebUSB browser such as Chrome, Opera or Edge 79+ to work. Compatible with any operating system even though Windows will have to install a USB driver.
Via | Android Developers Blog