Max Pro M1 (ZB602KL) - How to update from beta to latest WW android version?

[gerry_bond]

Model Name: ZB602KL
Firmware Version: QKQ1.WW_Phone-17.2017.1911.407-2019 1223
Rooted or not: Unknown, not sure what this means!
Frequency of Occurrence: Not applicable
APP Name & APP Version (If your issue relates to the app):
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I'm running the above beta version of Android 10. My phone has become unstable (hangs once or twice per day) and not all features (e.g. fingerprint sensor) work.
How do I get myself back on the latest WW build that will receive FOTA updates, and hopefully restore reliability?
Downloading higher versions to the root of Internal Storage does not trigger an update when I reboot the phone.

[santhosh0509200]

Christine_ASUS

Hi gerry.bond

Thank you for asking. Please backup your device and follow the steps below as 10 to 9 downgrade steps.

1. Download "MaxProM1_downgrade_to_9" and then put the image file into the root directory of the MicroSD card.

https://www.asus.com/supportonly/ZenFone%20Max%20Pro(M1)(ZB602KL)/HelpDesk_BIOS/

2. Insert MicroSD card into phone and then power off the device.

3. Long press with "Power" key and "Volume Down" key together and stop after feel the vibration to enter Recovery Mode

4. Use "Volume Down/Up" key and press "Power" key to choose "Apply update from external storage"

5. Select the downgrade file

6. When the updating process is done, Choose "Wipe data/factory reset" and tap"Yes" to perform the master clear.

7. "Wipe cache partition" > "Yes"

8. "Reboot system now" 

#Android 10 to Android 9 Guide 

https://www.asus.com/support/FAQ/1042349

Your device will downgrade to Android 9 WW-16.2017.1912.060 once you perform the steps successfully. Then you can FOTA or manual update to the latest Android 9 WW-16.2017.2009.087.

#[Zenfone] How to update firmware on my phone?

https://www.asus.com/support/FAQ/1009748/

View post

I'm in Android pie version is it upgrade to Android 10 latest beta version goes good or stick with 9 or downgrade to Oreo is better stable,which you prefer for me bro.

[Christine_ASUS]

Hi santhosh05092001 
Thank you for your asking. The system design of each Android version has the difference between each other. If you want to try Android 10 latest beta version, you may upgrade the firmware by visiting our official website. If you still prefer Android 9 firmware version, we provide official Android 10 to Android 9 downgrade tool. You may backup your data via Settings>System>Backup>Back up to Google Drive first, and upgrade your device to Android 10 latest beta version for a try.