update for zenfone 3 max

[menonkavya185]

Please tell us some basic information before asking for help:
Model Name: zenfone 3 max zc520TL
Firmware Version:
Rooted or not: NO
Frequency of Occurrence:
APP Name & APP Version (If your issue relates to the app):
In addition to information above, please also provide as much details as you can, e.g., using scenario, what troubleshooting you've already done, screenshot, etc.
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WILL ZENFONE HAVE A UPDATE AFTER ANDROID 7

[Christine_ASUS]

Hi menonkavya185
Thank you for your asking. Kindly refer to the firmware version begun with 15 as Android 8 version. Please back up your data>Download the firmware file of your SKU into the root directory of your internal storage>Reboot>Tap the notification of the System Update.
ZC520TL
https://www.asus.com/us/Phone/ZenFone-3-Max-ZC520TL/HelpDesk_BIOS/
Can you provide me your current firmware for further checking?
Settings>System>About Phone>Software information