Asus has started pushing out the Android 7.1.1 update to either ZenFone 3 Max or ZenFone 3 Deluxe. The reason for the confusing is the update announcement headline says ZenFone 3 Max (ZC553KL), while details mention ZenFone 3 Deluxe (ZS550KL) as the device getting the update.
The updates release notes only mention that the update arrives as version 14.0200.1704.119, but provide no specifics on what’s actually included in it. But If You Are Users Of This device, Your OTA Update will Pop-Up On Your Screen. Or you can still Manually Do it. By Navigating to Settings >> About >> System Updates and Check out For the new Updates and see if Available.
NOTE: Before Upgrading Make Sure Your Phone Is Not Rooted, If It is Then Un-root, And try Upgrading. also Make sure You Phone Battery is Upto 70% From Above.