Now the Viper 3.1.1 is Final. He work at Oreo it will be releast at December or January. Stay tune...... Look at here
Here from my Dropbox
I Hope thats going.
Thanks for this Rom. It works very smooth. And the Accu lifetime is excellent. With the Cm13 Official Snapshot and Nigthlies i have reboots. I hope with this Rom not. Thanks acuicultor for Sharing.
For me works 8.3.5 from here and AOSP Extended 5.3. From this link not work for me: https://forum.xda-developers.com/android/software-hacking/devices-xiaomi-firmware-updater-t3741446