I'm developing py script for automation testing of nRF devices. My script is based Nordic's scripts Master Control Panel\3.7.1.8567\lib\dfu... So, during testing my script I tested case when I turn-off nRF device during writing into BLE Profile (update characteristics) but nothing bag happens. I checked it and found that in file master_emulator.py function def send_data(self, pipe, msg, count, description): returns void instead of boolean variable to notify user that call send_data failed. I fixed it for me but please be informed about this issue.