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How to Downgrade to Android Nougat for ZenFone 3

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saktis_impreza MYS Level 6 | All posts
Last edited by saktis_impreza on 2018/5/13 13:46

If you find Android Oreo is buggy or you want to return to stock ROM, follow these steps:

Make sure you’ve backed up all of your IMPORTANT DATA before downgrading/returning to stock ROM.

I am not responsible for bricked devices and dead SD cards. YOU are choosing to make these modifications, and if you point the finger at me for messing up your device, I will laugh at you.

1) Download Nougat RAW firmware here:
ZE520KL: Link
ZE552KL: Link

2) Download ASUS Flash Tool here: Link

3) Install ASUS Flash Tool

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

5) Open ASUS Flash Tool and select your device

6) Select the RAW firmware you've downloaded

7) Click on the Serial Number of your device.

8) Click Start and wait 5-10 minutes (ignore error 5 [FRP ERROR])

9) Congratulations, you have downgraded/returned to stock Nougat ROM






ZenFone 3 (ZE520KL) 4GB RAM + 64GB ROM
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saktis_impreza MYS Level 6 | All posts
Last edited by saktis_impreza on 2018/5/13 13:46

RAW firmware has been updated to 14.2020.1712.85
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BRA Level 1 | All posts
Well, anyone done?
I'm seriously thinking about doing it because Oreo here did not work out.
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saktis_impreza MYS Level 6 | All posts
diogod7 posted on 2018/2/18 23:27
Well, anyone done?
I'm seriously thinking about doing it because Oreo here did not work out.

What problem did you face?                          
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BRA Level 1 | All posts
saktis_impreza posted on 2018/2/18 20:15
What problem did you face?

Hello! The battery is draining too fast. GPS icon does not turn off in the notification bar. I installed the last Oreo patch, did Wipe Data / Cache and it did not improve. So I think of downgrade but it is a risky procedure. I found your tutorial very practical. Taking courage ...
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IDN Level 1 | All posts
Does anyone succeeded using this method?
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saktis_impreza MYS Level 6 | All posts
robbydelonge posted on 2018/3/3 14:35
Does anyone succeeded using this method?

Of course it will work. Don't worry.
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ITA Level 1 | All posts
robbydelonge posted on 2018/3/3 07:35
Does anyone succeeded using this method?

Yeah, I succesfully downgraded to Nougat because of Oreo problem draining battery when idle
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IDN Level 1 | All posts
Done the stock Nougat flash. Still copying the Nougat zip update into sd card, kinda take a long time
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TWN Level 1 | All posts
Last edited by radax on 2018/3/10 12:48

Hello to everyone.
forst sorry for my English but I am not native English spoken.
Than, I tried to downgrade my Zenfone 3 but Asus flash tools said to me it's impossible to connect with my device.
May someone help me what I have to do?


Screenshot (2).png
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