Google Pixel 2 XL

1. Once you have followed the requirements, now you can open the ADB fastboot folder on your PC. It may there either on your desktop or C:/ADB i.e. Windows C drive.
2. Next step is to extract the files of firmware file and move the files to ADB folder.
3. Now in the same ADB fastboot folder, press and hold the ‘Shift” key and right-click on anywhere inside the folder to select 'Open command window here.'
4. In the command prompt windows need to enter a command for which your phone has to be connected to your computer system. The command is as follow:
adb devices
5. This command will show if the device is attached to the PC properly.
6. Using the following command boot your handset into bootloader mode.
adb reboot bootloader
7. Your phone will now automatically reboot itself into the bootloader mode.
8. Finally, you can now begin the installation of Stock firmware on your Pixel 2 XL. Firstly, open the Android 8 files that are present in the folder of ADB and simultaneously locate the flash-all script. To run the files double click on it to begin the installing process on your phone.
9. You will be asked to press any key to exit as soon as you are through with flashing the build. Please do not exit from the terminal unless you are asked to do so.
10. Lastly, all you need to do is reboot your Android device. Now you will be running the latest Google Android on Pixel 2XL.