https://devzone.nordicsemi.com/f/nordic-q-a/58358/problem-with-bindingDear Support, i&#39;m testing PCA10040 board. I&#39;m using nRF5_SDK_15.3.0_59ac345 SDK package. I&#39;m testing the project ble_app_hts. I compile it and i download the firmware on the microcontroller. I lounch the nRF ToolBox on Androind and i select HTMen-USTelligent Community 13Thu, 27 Feb 2020 12:40:35 GMThttps://devzone.nordicsemi.com/thread/236832?ContentTypeID=1Thu, 27 Feb 2020 12:40:35 GMT137ad170-7792-4731-bb38-c0d22fbe4515:29ed8a38-6f66-4ab1-8e4c-5f6929217f43Simonr<p>Hi</p> <p>I just tested this myself and I do not see this problem on my end. The issue might be that one of the devices has retained the bonding information while the other hasn&#39;t, which will cause bonding to fail. Please try to run the command nrfjprog --recover (using the <a href="https://www.nordicsemi.com/Software-and-tools/Development-Tools/nRF-Command-Line-Tools/Download">nRF Command Line Tools</a>) on the nRF52 DK and delete bonding information on your Android device as well and try again.</p> <p>Best regards,</p> <p>Simon</p><div style="clear:both;"></div>