Flashing Steps:
• Reboot to Recovery.
• Format Data.
• Reboot Recovery.
• Flash latest FW v1.6+ based on your region.
• Flash the Port.
• Format Data.
• Reboot to System.
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How to fix BT audio in Android 10?
First, Download audio configured xmls.
Second, go to recovery and place these according to their denoscription.
Third, Restart your Device.
(You can also include while porting.)