software downgrade

[MERQR]

Please tell us some basic information before asking for help:
Model Name:zenfone max pro m1
Firmware Version:424
Rooted or not:no
Frequency of Occurrence:
APP Name & APP Version (If your issue relates to the app):
In addition to information above, please also provide as much details as you can, e.g., using scenario, what troubleshooting you've already done, screenshot, etc.
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[Christine_ASUS]

Hi MERQR
Thank you for your asking. To downgrade from Version 424 to Version 063, you may follow the steps below as 10 to 9 downgrade steps.
1. Download "Version 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"
Furthermore, please refer to the link as the downgrade guide.
https://www.asus.com/support/FAQ/1042349
Also, please provide me if there's any issue detail you're facing in Version 424. Thank you.

[MERQR]

Christine_ASUS

Hi MERQR

Thank you for your asking. To downgrade from Version 424 to Version 063, you may follow the steps below as 10 to 9 downgrade steps.

1. Download "Version 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"

Furthermore, please refer to the link as the downgrade guide.

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

Also, please provide me if there's any issue detail you're facing in Version 424. Thank you.

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Thank you for the answer. I downloaded it to .63. Everything is good.
When it comes to bugs in version 424, the earpiece and speaker sound is very low, and fast charging doesn't work.

[MERQR]

vckanandvpp

https://zentalk.asus.com/en/discussion/comment/79348#Comment_79348

Download the downgrade version of Android 9 from the Asus website and install it through Fast boot mode. Note there may be a data loss while downgrading , So make sure to take back up.

View post

Thank you. This method worked