System update Anfroid 8 Zenfone 4 selfie

eros.palado.21eros.palado.21 Level 1
edited March 2021 in ZenFone 4 Series

I cant manually update my zemfone 4 selfie. Still in android 7. Please help

Best Answer

  • Answer ✓

    Hi eros.palado.21

    Thank you for your reply. Sorry for the belated reply due to Lunar New Year holidays. Because your firmware version is not the latest version of Android 7, please update to WW-14.0400.1808.206 first. You may try auto-update or manual update.

    Then, download the first Android 8 firmware file WW-15.0400.1809.405 into the root directory of the internal storage. Reboot. Tap the system update notification.

    If you still can not upgrade your system, please tell me your update process or provide me a video for checking. :)


  • Hi eros.palado.21

    Thank you for your asking. Please refer to the upgrade steps as below

    Update the device to the latest Android 7 version WW-14.0400.1808.206 >Download the first Android 8 version WW-15.0400.1809.405 file into the root directory, aka the outermost place, of the internal storage>Reboot>Tap the system update notification

    If you still can not upgrade the device, please provide me your current firmware version.

    Settings>System>About Phone>Software information

  • I tried it already but, it says failed..

    This is my firmware.

    Thanks in advance. Please help me, thank u.

  • It works! Thank u so much ! Highly appreciated.

  • Hello, I wanted to root my phone. Please help me. Thanks

    Asus Zenfone 3s Max

  • Hi eros.palado.21 

    My pleasure. Cheers :)

  • Hi

    Thank you for your asking. Please note that we do not provide the official unlock tool for ZC521TL. Furthermore, please note that unlocking the device or flashing the custom ROM are quite risky, may causing security issues like Widevine Issue, banking app usage issue, or unexpected software issues. Sorry for any inconvenience it may be caused. Thank you for your continued support and patronage.

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