Please tell us some basic information before asking for help:
Model Name: ZenFone 6 ZS630KL
Firmware Version: WW_18.0610.2011.107
Rooted or not: No
Frequency of Occurrence: every time
APP Name & APP Version (If your issue relates to the app): Youtube Music
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Look, I don't like this android 11 on zenfone 6.
First, on this version zen ui launcher I can't change icon pack anymore, the option wasn't there.
Second, I don't know if it's android 11 behavior or a bug, but after closing youtube music, the media control doesn't disappear, I have to restart the phone to make it disappear
Third, seems like asus programmer didn't do anything to their crappy twin apps. It still can't access contact for whatsapp.
So how can I downgrade to android 10? I've tried to download android 10 firmware and place it on microsd, and then try to install it via recovery mode but it didn't work