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!

[Gaurav_ROGII]

Thanks a lot bro for your help:) one last questio- I will be able to get the future updates after downgrading?

[Abii]

Akash Gupta

https://zentalk.asus.com/en/discussion/comment/117591#Comment_117591

Yes, shut down problem is solved for me after downgrade. I can now use dual 4g without and shut downs. My phone is been up for 12 hours now without issues!

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How many types of A9 are there, because the other day I downgraded to a9, but still shuttoff if i play pubg

[#4]

Abii

https://zentalk.asus.com/en/discussion/comment/117677#Comment_117677

How many types of A9 are there, because the other day I downgraded to a9, but still shuttoff if i play pubg

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No idea bro, this is the only one i know you can easily do without using adb tools or without any brick risks. Other downgrading might brick your device so this method is the safest.

[#5]

Gaurav ROGII

Thanks a lot bro for your help:) one last questio- I will be able to get the future updates after downgrading?

View post

Yes i think because i just got a10 fota right after downgrading.

[mamayankag]

To All,
The link provided is Official ASUS Build for ROG2 to be able to downgrade from A10 to A9. This is why it's a simple Download to Root Folder and Reboot style Downgrade.
And since it is Official, everybody will still have the option to Update to A10, no Warranty issues etc.
So when you use the file, it is like resetting your phone to A9 Last Build which is why you need to Setup your phone again.
Bugs/Issues associated to this A9 Build (if any) should only be there. Although no bugs/issues reported so far.