Hi! I cannot talk to an Arduino Uno with mBlock. I understand that the first thing I need to do is update the firmware! mBlock v4.0.4) says "Connected" via USB5, however when I select "Update Firmware (USB)" the Upload job fails with "Cannot communicate with the board". I can talk to the board with using the Ardunino software (1.6.5) with no problems! Any suggestions would be greatly appreciated!