Install /e/ on a Asus Zenfone Max Pro M2 - “X01BD”

Tip: Please read through the instructions at least once before actually following them, so as to avoid any problems later.
Warning: Downgrading Smartphones already on Android Q or LineageOS 17.x to Pie or other OS can cause instability or at worst brick some devices
Caution: Flash your device only if you know what you are doing and are OK taking the associated risk. All builds are provided as best effort, without any guarantee. The /e/ project and its project members deny any and all responsibility about the consequences of using /e/ software and or /e/ services.
Tip: Installing a custom recovery or unlocking the bootloader will erase all data on your device! Take a backup of your data before proceeding!!

Requirements

  • Take a backup of all important data on your phone before proceeding.
  • A guide on backing up with TWRP is available here
  • Ensure your phone is charged more than 50%
  • Check that adb and fastboot are enabled on your PC. If not you can find the setup instructions here
  • Download all the files and images mentioned in the download section below before starting the installation
  • Make sure you have a working data cable to connect your device to the PC. There are cables which are only for charging and do not transfer data.

  • Enable USB debugging on your device. You can find the instructions here
Caution: Before following these instructions please ensure that the device is on the latest Android Stock firmware. This can be done by checking for any OTA updates available in the Updater. If available run them before installing /e/OS

Downloads for the X01BD

  • TWRP (not required if you already have it running on your phone)

  • /e/OS build : Pie dev

To understand the difference between /e/OS builds check this guide

Warning: Please note some of the above links can lead to external sites
Warning: Before following these instructions please ensure that the device is on the latest **Android ** firmware.

Unlocking the bootloader

Tip: The steps below only need to be run once per device
  1. Download the bootloader unlock app for your device:

    • Navigate to ASUS’ support site and go to your device’s page by entering its model number.
    • Click Driver & Tools
    • Select Android from the drop-down menu
    • Open the Utilities section
    • Download the Unlock Device App
    • If the downloaded file is packaged in a .zip archive, extract it.
  2. Connect the device to your PC via USB.

  3. On the computer, open a command prompt (on Windows) or terminal (on Linux or macOS) window and change to the location where the Unlock Device App .apk resides.

  4. Install the .apk by typing:
    adb install Name_of_unlock_app.apk
    
  5. Run the application Unlock Device Tool from the device and agree to the terms.

    Follow the steps as given on the ASUS support site to complete the unlock process

  6. Press the button to unlock your device.

  7. The device should automatically reboot into bootloader mode and the message unlock successfully...reboot after 5 seconds should be displayed. The device will then reboot and load Android.

Booting a custom recovery using fastboot

  1. Before proceeding ensure you have downloaded the custom recovery from the link given in the Download section above

  2. Connect your device to your PC via USB.

  3. On the computer, open a command prompt (on Windows) or terminal (on Linux or macOS) window, and type:

     adb reboot bootloader
    

    You can also boot into fastboot mode via a key combination:

    • With the device powered off
    • hold Volume Down + Power. Keep holding both buttons until the word “FASTBOOT” appears on the screen, then release.

4. Once the device is in fastboot mode, verify your PC finds it by typing:

fastboot devices
Tip: If you see no permissions fastboot while on Linux or macOS, try running fastboot as root
Tip: Some devices have buggy USB support while in bootloader mode. If fastboot hangs with no output when using commands such as fastboot getvar .. , fastboot boot …, fastboot flash … try a different USB port (preferably a USB Type-A 2.0 one) or a USB hub

5. Flash a recovery image onto your device by typing

fastboot flash boot recoveryfilename.img

on some devices the below command may be required

fastboot boot recoveryfilename.img

or

fastboot flash recovery recoveryfilename.img

Replace the recoveryfilename with the name of the recovery image you downloaded

6. Now reboot into recovery to verify the installation.

Installing /e/ from recovery

  1. Before proceeding ensure you have downloaded the /e/OS for your device, from the link given in the Downloads section above

  2. If you aren’t already in recovery mode, reboot into recovery mode by typing the below command in the console of an adb enabled PC

     adb reboot recovery
    
    Tip: You can also do this manually using the below key combination
    • With the device powered off, hold Volume Down + Power
  3. In TWRP return to main menu, then tap Wipe

  4. Now tap Format Data and continue with the formatting process.

    Here a new screen may show where you will have to type Yes and confirm the action by clicking a button.

    Caution: Format Data will remove encryption as well as delete all files stored on the internal storage. Remember to take a backup first. Check Requirements section above.
  5. Return to the previous menu and tap Advanced Wipe.

  6. Select the Cache and System partitions to be wiped and then Swipe to Wipe

  7. Sideload the /e/ .zip package.

    Tip: Sideload requires actions in two places to be done. One on your phone in the TWRP UI and secondly on the connected PC which should have adb enabled. Also note the sideload process while running may stop abruptly around 50%. The console would show a message Total xfer: 1.00x. This would mean that the transfer has successfully completed.
    • On the device in TWRP,

      select Advanced, ADB Sideload, then swipe to begin sideload.

    • On the host machine, in the console , start the sideload of the package by typing
     adb sideload filename.zip
    
    Tip: Change the filename to the name of the file you downloaded
  8. Once installation has finished, return to the main menu, tap Reboot, and then System

Warning: Avoid installing any additional apps or services if suggested by the recovery. They may cause your device to bootloop, as well as attempt to access and or corrupt your data.
Success: Congratulations !! Your phone should now be booting into /e/OS !!
To find some troubleshooting tips… click here

adb

  • Getting a Total xFer ':' 0.01x message - Try to upload the /e/OS to internal storage and retry to install
  • adb ':' sideload connection failed ':' insufficient permissions for device error - Try to execute the commands adb kill-server and adb start-server and retry
  • Running adb shell twrp install /sdcard/</e/ zip package> raise non-existent directory error - Try to check solution here
  • Getting an insufficient permissions error - Try the solution given here
  • When running "adb devices" in bash a device is shown as "unauthorized" - Try the solution given here

TWRP

  • Errors while running TWRP version 3.4.x.x or above - Try downloading and using a previous TWRP version.. below 3.4.x.x
  • In TWRP if this error shows up failed to mount /preload - Try in TWRP wipe screen in advanced menu select preload and swipe to wipe
  • /cache/recovery/xxx -> no such file or directory error while flashing a ROM - On PC run adb shell in the console now create a folder called recovery for e.g. here the devicecode name is violet "violet :/cache# mkdir recovery"

Bootloop

  • Issue specific to S9 and S9+ - Please refer this guide



Tip: To suggest changes to this install guide documentation, please visit the Zenfone Max Pro M2 specific topic on our community forum. To report issues in the build please refer this guide

This documentation “Install /e/ on a Asus Zenfone Max Pro M2 - “X01BD”” is a derivative of “install LineageOS on X01BD” by The LineageOS Project, used under CC BY.