What to do if the Bluetooth device that pops up on the Xiaomi TV/Box is not the one you want to connect to?

If the Bluetooth pairing/connection prompt on your TV/Box is not for the device you want to connect to, you can choose to add that device to the blacklist. Then the Bluetooth device will no longer be able to connect to the TV/Box, will not be discovered, and cannot initiate a Bluetooth pairing request.
If you need to use this Bluetooth device again, you can remove it from the Bluetooth device blacklist and reconnect it.