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[Read] [System] Tutorial: How to Downgrade to Android Marshmallow

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saktis_impreza MYS Level 6 | All posts
ZenFone 3 Bug Report
Model: ZE552KL
RAM: 4GB
Firmware/App Version: 14.2020.1708.56
Location: Malaysia
Frequency of Occurrence: 2.0GHz
Rooted: No
App Name: Downgrade
Screenshot: -
Description: :)
Last edited by saktis_impreza on 2019/2/8 22:18

Hi ZenFone 3 users, I'll show you guys how to downgrade your phone to Android Marshmallow.


Step 1: Download the RAW firmware

ZE520KL : Link
ZE552KL : Link

Step 2: Download ASUS Flash Tool
Link

Step 3: Enter Fastboot Mode on your device by pressing Power Button and Volume Up Button simultaneously.

Step 4: Connect your phone to the PC and open ASUS Flashtool

Step 5 : Select your device model.

Step 6: Flash the RAW firmware.

Step 8: Wipe data & cache via recovery mode (Power Button + Volume Down) [RECOMMENDED]

P.S: Before downgrading, please backup all of your important data to prevent data loss and I AM NOT RESPONSIBLE FOR BRICKING YOUR DEVICE.







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ZenFone 3 (ZE520KL) 4GB RAM + 64GB ROM
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saktis_impreza MYS Level 6 | All posts
Video Tutorial : https://youtu.be/P8xg7A-P7Ak
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Have successfully done this, the camera of my phone is still blurry... you think it may be a hardware problem already?
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saktis_impreza MYS Level 6 | All posts
kelvincharlescaro1988 posted on 2017/8/14 16:31
Have successfully done this, the camera of my phone is still blurry... you think it may be a hardwar ...

Try to flash light on the camera lens and see if it works.
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negative. lol. I'm about to give up hahahah
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GBR Level 1 | All posts
Hi, do I really need a SD card? Can I just use the internal storage instead?
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saktis_impreza MYS Level 6 | All posts
AleksanderV posted on 2017/9/10 14:34
Hi, do I really need a SD card? Can I just use the internal storage instead?

Yes. SD card is really important for this process.
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GBR Level 1 | All posts
saktis_impreza posted on 2017/9/10 16:56
Yes. SD card is really important for this process.

Thanks for your quick response, guess I'll have to buy a SD card just to downgrade my phone then. The Nougat battery drain is so freaking horrible. Btw, is 13.20.10.152 the most stable one?
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saktis_impreza MYS Level 6 | All posts
AleksanderV posted on 2017/9/10 17:26
Thanks for your quick response, guess I'll have to buy a SD card just to downgrade my phone then.  ...

Not really though, but it is still better than Nougat.
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GBR Level 1 | All posts
Last edited by AleksanderV on 2017/9/15 01:40
saktis_impreza posted on 2017/9/10 17:30
Not really though, but it is still better than Nougat.

After having tried some custom ROMs (only about 3 and not so stable tho, this phone seems not so popular), I decided to switch back to 6.0 stock room (thank you for the nice guide), since as long as it's N, there will still remain a huge battery drain. Now I can finally use this phone without having to plus the charger at least twice a day, lol. Kudos to you mate

I've read somewhere that there will be a O update for zenfone 3 sometime in 2018, hope it will be optimised well. I might just stick with this Marshmallow build if the battery issue would still be there...
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