How to Downgrade Asus ZenFone 3 to Nougat


Android 8.0 Oreo has already been released for Asus ZenFone 3 and it is sure that you might have updated your phone to Oreo. The update offers various new features and performance improvements to the phone, but if you don’t like the update for some reason, you can revert back your phone to Android Nougat. Read on to know how to downgrade ZenFone 3 to Nougat from Oreo.

Android 8.0 Oreo is based on Asus’s new ZenUI 4.0 that offers a much cleaner interface and lot of new features. Also, the update included all the goodies of Android 8.0 Oreo and latest version of Android security patches. However, if you are not happy with this update for any reason and want to go back to the previous Nougat build, then you can do that without much hassle.


Downgrading from a higher OS version to lower OS version is not always an easy method. A special downgrade version of the firmware is required. With ASUS Flash Tool and raw Nougat firmware, you can downgrade ZenFone 3 to Nougat just with a click.

The Znetalk forum user saktis_impreza has made available all the necessary things to dowbrade your phone. Below is download links and installation procedure.

Important: The below guide is for Asus ZenFone 3 ZE520KL and ZE552KL global variants only. Do not flash it on other region variant. Back up important data before proceeding.

How to Downgrade Asus ZenFone 3 to Nougat

1. Download Nougat raw firmware for ZenFone 3 ZE520KL [here] and for ZenFone 3 ZE552KL [here].

2. Download ASUS Flash Tool [here] and install it on your computer.

3. Now, power off your device and enter Fastboot mode by pressing Power Button + Volume Up button

4. Open ASUS Flash Tool and select your device

5. Select the RAW firmware you’ve downloaded

6. Click on the Serial Number of your device.

7. Click Start and wait 5-10 minutes.

Done! You have now downgraded your phone to Nougat. Any question regarding this subject? Ask it in the comment. (source – Asus)


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