[Asus ZenFone Max Pro M1  Guides, News, & Discussio] damenchoy:
I owned an European version of Max Pro M1 (WW_X00TD) and I played with it with custom ROMs by unlocking the bootloader and install TWRP for flashing custom ROM.

When the trials done, I tried to flash back to the original international ROM (recovering the phone to original status including relocking the bootloader and re-installation of the stock recovery, etc.)

I searched the forum and also other web resources and I have tried an easier and more direct way to do this. Basically I used the Asus Fastboot flashing technique to directly overwrite the phone’s internal memory with stock data. So I guess this method can also be applied to a bricked phone

I think I should document the steps here so that in case other owners of this phone have the need to go back to stock, you can try the similar steps.

*Waning: I have only tried these steps on my own phone with the files suggested below. Proceed at your own risk.

1. Backup the important data in your phone

2. Get a Windows machine (7 or 8 or 10)

Install the Asus phone drivers for Windows

Visit this thread for downloading the rar file. One of the extracted files contains the drivers

This thread also contains the instruction to unlock your phone’s bootloader and install the TWRP

Download and install the adb setup files here in this thread

I used the one for Version 1.3 there

3. Connect your phone via usb cable to see if it can be properly connected to your Windows machine to make sure your drivers work.

4. Download the file [TuserHp.com]_WW_ZB601KL(ZB602KL)_14.2016.1802.247_20180419_AFT.zip in this thread

5. Extracted the zip file

6. Copy all the contents of the zip file to a folder under C: drive (in my case c:\asus )

7. Now reboot your phone into fastboot mode by pressing volume up + power on at the same time (make sure your phone has more than 80% power for the battery)

8. Connect your phone via usb connection to your Windows computer

9. Open the command Windows in your computer and navigate to the directory where you have extracted those files

10. At your command prompt, type flashall_AFT.bat to execute this batch file

11. Wait and watch the outputs while this batch file overwrites your phone internal storage with stock data

Here is the sample output:

c:\asus>flashall_AFT.bat

------------------------

Begin fastboot flashall

------------------------

Earse Data: Yes

Support All device

current-slot is current-slot

buildtype is user

target reported max download size of 536870912 bytes

…………………………..<< truncated the outputs>>>>>

...

FAILED (remote: unknown command !)

finished. total time: 0.000s

...

FAILED (remote: unknown command !)

finished. total time: 0.033s

--------------------------------

begin to flash partition xbl

target reported max download size of 536870912 bytes

sending 'xbl' (2802 KB)...

OKAY [ 0.233s]

writing 'xbl'...

OKAY [ 0.021s]

finished. total time: 0.254s

done

--------------------------------

--------------------------------

begin to flash partition xblbak

target reported max download size of 536870912 bytes

sending 'xblbak' (2802 KB)...

OKAY [ 0.134s]

writing 'xblbak'...

OKAY [ 0.027s]

finished. total time: 0.161s

done

--------------------------------

--------------------------------

begin to flash partition tz

target reported max download size of 536870912 bytes

sending 'tz' (1916 KB)...

OKAY [ 0.165s]

writing 'tz'...

OKAY [ -0.000s]

finished. total time: 0.191s

done

--------------------------------

--------------------------------

begin to flash partition tzbak

target reported max download size of 536870912 bytes

sending 'tzbak' (1916 KB)...

OKAY [ 0.088s]

writing 'tzbak'...

OKAY [ 0.000s]

finished. total time: 0.111s

done

--------------------------------

--------------------------------

begin to flash partition rpm

target reported max download size of 536870912 bytes

sending 'rpm' (219 KB)...

OKAY [ 0.059s]

writing 'rpm'...

OKAY [ -0.000s]

finished. total time: 0.086s

done

--------------------------------

--------------------------------

begin to flash partition rpmbak

target reported max download size of 536870912 bytes

sending 'rpmbak' (219 KB)...

OKAY [ 0.023s]

writing 'rpmbak'...

OKAY [ 0.000s]

finished. total time: 0.073s

done

--------------------------------

--------------------------------

begin to flash partition hyp

target reported max download size of 536870912 bytes

sending 'hyp' (272 KB)...

OKAY [ 0.060s]

writing 'hyp'...

OKAY [ 0.028s]

finished. total time: 0.087s

done

--------------------------------

--------------------------------

begin to flash partition hypbak

target reported max download size of 536870912 bytes

sending 'hypbak' (272 KB)...

OKAY [ 0.027s]

writing 'hypbak'...

OKAY [ 0.000s]

finished. total time: 0.054s

…………………………..<< truncated the outputs>>>>>…………………………

done

--------------------------------

...

OKAY [ 0.081s]

finished. total time: 0.081s

...

OKAY [ 0.079s]

finished. total time: 0.079s

...

OKAY [ -0.000s]

finished. total time: 0.039s

All is download​

12. When everything done, the phone should reboot and you should have your phone restored to original stock Rom.

13. For my case, I can still normally get the OTAs so my phone can be updated to the latest updated Rom available from Asus