SYSTEM VERSION ANDROID 8.1 VERSION WW-15.2016.1902.340
IN YOUR OPINION WHAT IS THE BEST VERSION OF ANDROID ALREADY CREATED BY ASUS, FOR ZENFONE MAX PRO (M1)
Thank you for your asking. Each Android has different system and interface design; each firmware version will optimize the system stability from the previous firmware version. Please note that once you update to Android 9, you can not downgrade to Android 8 simply with website tool.