Manual Update SOP Before you start the Android Pie update process on your Max Pro M1, make sure that your current firmware version on your phone is on Version WW15.2016.1902.340. If your phone isn’t on the above stated firmware version you can download the same from here: https://www.asus.com/Phone/ZenFone-Max-ProM1/HelpDesk_Download/ After Updating your phone to 15.2016.1902.340 you can start Android Pie update.
PC Version: 1. Download the Android Pie update provided in the Mail. 2. Copy the ZIP file in the internal storage of your Phone.
3. Connect your phone to PC via micro USB cable, and copy the ZIP file to the root (Not in any folder) directory of the phone's internal storage. Remove the micro USB from the phone when the file transfer is completed.
4. If the Update notification doesn’t show up, reboot your phone and check for the firmware update notification pop-up on the status bar.
5. Tap "System Update File Detected..." and follow the steps shown to update the firmware.
Mobile Version: 1. Download the file from the provided link:
2. Open Downloads Folder or the Path where you have downloaded the File, by default the path is always downloads folder.
3. Move/Copy the File to Internal Storage of your Phone.
4. Once the File is in the internal storage the update notification should arrive or else restart your phone.
Note: 1. The Battery should be Minimum 30% charged before you update the device. 2. The Zip file need to be downloaded in one attempt as the file maybe corrupted if the download fails in between. 3. The current firmware version of your phone should be on 15.2016.1902.340, only then the New firmware version will be detected/Installed. 4. You can follow the same sop as below to upgrade to .340 version