Corrupted data sent by device
I'm scanning four MetamotionR boards
_ Hardware revision [0.4]
_ Firmware revision [1.5.0]
_ Model number 
with the integrated bluetooth of a RaspberryPI 3 model B+. On the raspberry pi was flashed the image received from Mbientlab by email (https://mbientlab.com/tutorials/MetaHub.html#download-image). The python code is attached, it is the same code in the python SDK example folder on git.
In the image below you can see that the first scan completed successfully, but in the second scan I received an error from two board: "Corrupted data sent by device ...".
Could you help me?
At the moment I'm testing only four boards, but I bought 12 MetamotionR boards for my complete application. I want to be sure that the final system will be reliable.