Are you having issues with Bluetooth noice disturbance while listening music. Here is the solution for you. step by step tutorial for you with images
Go to settings over your Phone then about Phone
Then click on miui logo it will lead to Updater
Right top click on three dots Click on latest pakage
It will download latest rom full file after completion of download it will automatically start decrypting rom file.
Click on update. After update finished buletooth disturbance noice will stop.
Disclaimer : while phone rebooted and update running don’t press power button. It will lead to bricked Phone.