ANDROID 10 TO 9 DOWNGRADE

[#1]

To those willing to downgrade from android 10 to 9 because you are just tired of asus playing jokes on us, you are at the right post!
so to downgrade from current buggy android 10, you must backup your data because if you downgrade all your data will be lost, so be aware of this.
now that you have backed up your data, you must go to this link
For Global users (WW):
https://dlcdnets.asus.com/pub/ASUS/ZenFone/ZS660KL/UL-ASUS_I001_1-ASUS-18.0631.2001.64-1.1.92-user.z...
For China/Tencent ROM users (CN):
https://dlcdnets.asus.com/pub/ASUS/ZenFone/ZS660KL/UL-ASUS_I001_1-CN-18.0631.1910.63-1.1.252-user.zi...

After downloading the zip, you must move your zipfile to the root of your storage device which means it should not be inside any folder. After that just restart your device and after restart it will detect update. click on the notification and it will start this update, after update click reboot and let it finish the update, it will take sometime to boot up on logo since you just downloaded new firmware. After this you device will be on android 9 and you will need to setup your device again.

Hopefully this helped!

[#2]

sauravshanbhogue

https://zentalk.asus.com/en/discussion/comment/119106#Comment_119106

Hey man sadly the phone shutdown/black screen while charging and black screen screen during PUBG ( or any other game ) does not go away after downgrading to A9😞. Service centre is the only option available if y'all are talking about the same issue I mentioned:-(

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I am not getting a black screen, my phone just completely turned off on my when playing on A10. Its fixed for me. I think in your case you should probably go to service center if downgrading didnt fix your issue. Visit there before you warranty runs out.

[sauravshanbhogu]

Akash Gupta

https://zentalk.asus.com/en/discussion/comment/119037#Comment_119037

Make sure to download the exact version of your phone, if your phone has global rom (WW) then download the global one and if you phone has chinese rom then download the chinese rom (CN)

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Reply my comment if you are talking about the Known issue( black screen / shutdown ). I know a test that you can perform to check if it is fixed.

[sauravshanbhogu]

Akash Gupta

https://zentalk.asus.com/en/discussion/comment/119280#Comment_119280

I am not getting a black screen, my phone just completely turned off on my when playing on A10. Its fixed for me. I think in your case you should probably go to service center if downgrading didnt fix your issue. Visit there before you warranty runs out.

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Hey bro I hope you read this!
Issue started in May ( was on A10 ).
Downgraded to A9 the next day.
1 week usage ( PUBG + OTHER APPS ) black screen issue is gone.
Then it starts again . I contact the mods they tell me to wait until they find solution.
Finally they tell us ( many of us facing the same issue) to get it to service centre for RMA.( Key word "RMA" )
I personally could not but many who I've known through this forum got it to the service centre . But the service centre guys simply downgraded the phone to A9 and send back the phone to check whether problem solved. No sign of RMA .Problem reappears after a week.
Luckily a few who were early to get it to service centre get a COMPLETE REFUND OF AROUND 38K INR. And a lot of them who were unlucky have been made to run circles and still these service centre guys simply downgrade and lie to us that it is Android 10 fault while clearly the same issue exists on A9 as well
I have to mention that A few have gotten their motherboard replaced as well!( A possible Fix)

[kyleashcraft86]

Akash Gupta

https://zentalk.asus.com/en/discussion/comment/119037#Comment_119037

Make sure to download the exact version of your phone, if your phone has global rom (WW) then download the global one and if you phone has chinese rom then download the chinese rom (CN)

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Yeah man I did that. Still nothing popped up. I have the ww version. Placed it in internal storage folder and restarted. I even reset app preferences. Allowed permissions. Still nothing pops up after when I restart. I've manually updated and downgraded before so I don't know whats going on. Should I attempt to reset to factory settings?

[amansh1004]

@sauravshanbhogue i want to know one thing..do u charge ur phone via extension board or direct?
Whoever getting switch off problem..are they using extension board for charging or direct?