My box is still on android version 8.0.0 with android security from march 5 2019. I also have bluetooth issues. My bluetooth headphones keeps disconnecting from my box every 10-15 min and sometimes start to have huge sound delay of 2-3 second from the video. I tried to unpaired and paired my device again and again with no difference. My headphones also work perfectly with my phone so mi box is really the problem here. I am starting to get sick of this box since I only use it to watch videos quietly when I finish working at midnight.