Update: April 11, 2019 — Android Pie update for the ASUS Max Pro M2 has also started rolling out in India, after the beta update in February.

We’ve been working round the clock to make sure that we deliver the highly awaited Android Pie. The official update is now being rolled out on the Zenfone Max Pro M1 and the Zenfone Max M2 and Zenfone Max Pro M2. So just sit back, relax and enjoy your Pie. #WeHearYou pic.twitter.com/FjrsAdYMB9 — ASUS India (@ASUSIndia) April 11, 2019

Earlier: After beta update in February, ASUS has finally started rolling out stable Android 9.0 (Pie) update for the Zenfone Max Pro M1 and also for the Max M2 in India, as it had promised.

The latest Android Pie update brings several new features, including Adaptive Battery that uses machine learning to prioritize system resources for the apps, App Actions that help you raise the visibility of your app and help drive engagement using machine learning, new Magnifier feature for easier copy-and-paste and lots more.

The ASUS Zenfone Max Pro M1 v16.2017.1903.050 update is 1.55GB in size or 392MB for those who are running Pie beta and includes Android security patch for March 2019. The update is gradually rolling out in batches so it will take time to reach everyone.

ASUS already promised that it will roll out Android Pie for the Zenfone Max Pro M2 by April 15th. Check out the complete change log below.

ZenFone Max Pro M1 – Firmware Notes. (FOTA version – OPM1.WW_Phone-16.2017.1903.050) Android P upgrade

Update security patch ZenFone Max M2– Firmware Notes. (FOTA version – WW_Phone-16.2018.1903.37) Update Android 9.0

Google Mobile Services (GMS) upgrade to version 9.0_201903 ZenFone Max Pro M2 – Firmware Notes. (FOTA version – PKQ1.WW_Phone-16.2017.1903.061) Android P upgrade

Update Google March Security Patch

Source 1, 2, 3, 4