How to Download and Install Android 9.0 Pie on Xiaomi Mi A1 (Tissot) | Unofficial AOSP Android Pie Custom ROM for Mi A1
Xiaomi has already confirmed that the Mi A1 will receive two years of Major Android Software and that includes the latest Android Pie. There’s no informtaion on when Xiaomi is actually going to roll out this update, it may take a few months, as Android 9.0 Pie just came out. But if you want to taste Android Pie right now, you can do it via AOSP ROM. Developer “abhishek987” has successfully ported Android 9.0 Pie for the Mi A1. Additionally, most major aspects of the phone are working as expected.
You’ll need to Unlock Bootloader and Install TWRP Custom Recovery in-order to Install the AOSP Custom ROM based on Android 9.0 Pie on Mi A1. You can grab the Custom Rom ZIP file from below.