I was using V5.0.0-Bluetooth4.0.exe and mBot was working with USB and Bluetooth connection. For Bluetooth connection I had to replace driver on PC.
Now I upgraded mBlock to V5.1.0.exe and Bluetooth is not working anymore. USB connection works fine.
I am able to connect over Bluetooth, but then a yellow box with text “Update” appears.
But I already updated the firmware over USB several times and nothing changes.
Any help appreciated