Tool to Flash Android O beta on Mi A1

Hello Mi A1 user i know you are waiting for Android O update for your device. You Might have applied for beta testing but you are here because your application is denied.
Upgrading will not lead to data loss but if you choose to roll back to stable data loss  may occur.
Please backup before proceeding.
Lets begin with the process
1. Install Magisk
2. Install the Magisk module UpdateEngine_1.2.zip and reboot
3. Open the newly installed Update Engine app and press start.
4. Wait for the installation to complete and restart your device to boot into Android O.

If you wish to update to the latest beta use Magisk to install UpdateEngine_1.3.zip

Note: You must install Oreo via v1.2 before installing the latest beta





Source : xda
credit : xda user ur0