[Asus ZenFone Max Pro M1  Guides, News, & Discussio] TheUsefulContributor:
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ASUS has now stopped official firmware development for the ZenFone Max Pro M1 (X00T/TD) in December 2020, leaving users with a final Android 10 OTA update. As they may one day decide to remove the builds from their website, I've decided to publish them here so they can stay there forever. This way, everyone will be able to (re)install the official version of Android they want on their device. Hoping this will help someone!

***WARNINGS***

If you still have the official ASUS firmware on your device, you can only upgrade to a higher version of Android by placing the .zip file of the desired version in your internal storage. After a reboot, the phone will automatically detect the update (check in your notifications) and apply it. This will NOT void your warranty.

Downgrading to a lower version is not possible without unlocking your bootloader and installing a custom recovery. These manipulations would void your warranty if you still have one. (except from 10 to 9 on WW SKU, see below)

Flashing one of these official builds will erase your custom recovery and replace it by the ASUS default one. This will not relock the bootloader.

Please choose the right SKU version corresponding to your device (WW or JP).

I am not responsible for anything that may happen to your phone by installing any custom ROMs and/or kernels. You do it at your own risk and take the responsibility upon yourself ; you are not to blame me or XDA and its respected developers. Therefore, I am not responsible for bricked devices, dead SD cards, thermonuclear war, or you getting fired because the alarm app failed.

Quick HOW-TO tutorial :

Please ensure to backup your data before starting.

Case 1 : Upgrading Android version by using the ASUS FOTA Service

(if you still have the original firmware on your phone)

Download one of the following zip files.

Place it in the internal storage.

Reboot your phone.

Apply the update.

(if any doubts, please follow this ASUS tutorial).

As said before, please note that only upgrades to a higher android version are possible.

Case 2 : (Re)installing the stock ROM from a custom recovery

(it requires an unlocked bootloader and a custom recovery. a tutorial detailing how to do this will arrive soon)

Wipe everything from your custom recovery.

Flash the zip file of the version desired from SD card, USB flash drive (with a micro-usb OTG cable) or computer with ADB sideload.

Reboot to system

As said before, please note that flashing one of these zip files will erase your custom recovery, and replace it by the ASUS default one.

DOWNLOADS

for WW SKU only :

Last Android 7 Nougat release : 2018/05/28, Version WW-14.2016.1804.305 - ASUS - MEGA

Last Android 8 Oreo release : 2019/03/04, Version WW-15.2016.1902.340 - ASUS - MEGA

Last Android 9 Pie release : 2020/09/11, Version WW-16.2017.2009.087 - ASUS - MEGA

Last Android 10 Q release : 2020/12/22, Version WW-17.2017.2012.438 - ASUS - MEGA

You can downgrade from Android 10 to 9 using ASUS FOTA updater with the 2020/04/24 release, Version MaxProM1_downgrade_to_9 - ASUS - MEGA

for JP SKU only

Last Android 8 Oreo release : 2019/03/12, Version JP-15.2016.1902.340 - ASUS - MEGA

Last Android 9 Pie release : 2020/10/23, Version JP-16.2017.2009.087 - ASUS - MEGA

Last Android 10 Q release : 2020/12/22, Version JP-17.2017.2012.438 - ASUS - MEGA

As long as ASUS will host them, you will find all the firmware builds here, with the improved items and known issues.

Do not hesitate to ask questions below.

Take care of yourself

TUC