Flash Android P Preview Image in

https://developers.google.com/android/images#instructions

Note:

1. When run fastboot command, if you have no permission, run the command like "sudo $(which fastboot) ..." .

    (https://askubuntu.com/questions/705537/no-permissions-fastboot-fastboot-and-adb-not-working/901535?utm_medium=organic&utm_source=google_rich_qa&utm_campaign=google_rich_qa)

2. If there no output when running the "flash-all.sh" file, you should manually run the commands inside the script one by one.