The new update comes with build number 14.2016.1711.215 (released on 5-12- 2017) and based on Android Nougat. After installing the update, users can experience better performance on their ZenFone 4 Max as well as enjoy VoLTE calling in various carriers (CHT/FET/TST) and FET VoWIFI function.  

If you have not received the OTA update notification yet, then go to Settings > About > System Update > and check for update manually. Users who prefer manual installation, head over to the below guide. What is new in this update (14.2016.1711.215)? Also Read: How to Unlock Bootloader of ZenFone 4 Max ZC554KL Officially Note: If you prefer manual installation and before proceeding with below steps, back up every data you have on the phone. Also, make sure at least 2GB free space remaining on the SD card. Important: This guide is for ZenFone 4 Max (ZC554KL) and SKU WW. Do not install the firmware on other SKU (CN, TW, etc.). Check your SKU by going to Settings > About > software information > Build number and see the software version for WW, CN, JP, etc.

How to Install 14.2016.1711.215 Update on Asus ZenFone 4 Max (ZC554KL)

  1. Download WW-14.2016.1711.215 update for Zenfone 4 Max from here or latest version from here.
  2. Rename the downloaded firmware file to ‘update.zip’ and save it on your phone.
  3. Boot your phone into recovery mode (Switch off the phone and turn on by pressing Power + Volume Up buttons together).
  4. In recovery, choose Apply update from SD card and then select the update.zip file.
  5. After completing the installation, reboot your phone. Any question? Leave it in the comment section below (Source)