Connection to Mi Band 3 is impossible

Question

I'm trying to connect to Mi Band 3 via Python using some libraries that I got and I cannot - bluepy returns such error:

bluepy.btle.BTLEDisconnectError: Failed to connect to peripheral EC:E7:23:1D:01:9B, addr type: random

I tried to connect to the device also using gatttool and there's also some problem that I don't understand:

[EC:E7:23:1D:01:9B][LE]> connect
Attempting to connect to EC:E7:23:1D:01:9B
Error: connect error: Device or resource busy (16)
[EC:E7:23:1D:01:9B][LE]> 
[EC:E7:23:1D:01:9B][LE]> connect
Attempting to connect to EC:E7:23:1D:01:9B
[EC:E7:23:1D:01:9B][LE]> primary
Command Failed: Disconnected
Error: connect error: Connection refused (111)
[EC:E7:23:1D:01:9B][LE]> 
[EC:E7:23:1D:01:9B][LE]> connect
Attempting to connect to EC:E7:23:1D:01:9B
Error: connect error: Connection refused (111)
[EC:E7:23:1D:01:9B][LE]> 

Maybe anyone of you could give me some advice what wrong am I doing to obtain access to the device. I have access to BT on VM, as I can list devices from console or settings, within MB3.

My enviroment:

Ubuntu 19.10 on: VirtualBox 6.0.14 inside Windows 10 Education

Notebook MSIGP63 8RE-403XPL

Band is unpaired with MiFit at the moment of connection.

I believe you can help me with this issue.

Answer 1

Type this, it should fix the problem

sudo btmgmt le on