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Tell me, How to fix max pro m1 build 438?

Star I
Please tell us some basic information before asking for help:
Model Name: Asus Zenfone max pro M1
Firmware Version: WW-17.2017.2012.438
Rooted or not: not
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.
I trying update my phone from build 087 android 9.0 to build 438 android 10.0.
Update is success, but my battery so fast empty.
Charging is so fast full too. But, when i try restart phone on 100% battery, as soon as phon was started, the battery just have 15-20% powers.

Another bugs, i found in sound.

Please tell me how to fix its.

Community Legend II
Hi Obhot
Thank you for your asking. The issue appears right after firmware can be triggered by firmware-3rd party app compatibility.
Kindly try some at-home troubleshooting tips below:
1. Please try to enter "Safe Mode". If the function works well in Safe Mode yet the issue remains out of Safe Mode, please check any disturbance from installed 3rd party apps.
# How to enter and exit "Safe Mode"
2. Also, please try "the Factory Reset" 
Settings>System>Advanced>Reset options>Erase all data(factory reset)
**Please note that once the Factory Reset is completed, all data, apps, settings and personal information will be deleted.

Besides, have you ever unlocked/rooted/flashed custom rom on the device?
Battery aging is a normal behavior. If the issue remains the same, please downgrade the device to Android 9 or bring the device to the nearest repair center for further battery checking. Cheers.
If it is impossible to access the service center during Covid-19 period, please try CallUs:
**Please backup before you submit the device to the repair center.