https://devzone.nordicsemi.com/f/nordic-q-a/53577/pc-ble-driver-connection-issueHi folks, Im trying to run the heart rate collector from a Visual Studio application and I have some communication issues with the connectivity device. I use a nRF52 Dongle running the firmware downloaded by the nRF Connect BLE app (4.1.1, sd api 3en-USTelligent Community 13Fri, 25 Oct 2019 12:24:57 GMThttps://devzone.nordicsemi.com/thread/216833?ContentTypeID=1Fri, 25 Oct 2019 12:24:57 GMT137ad170-7792-4731-bb38-c0d22fbe4515:aec7df19-498d-4ff3-b329-4ffb8e573f5etesc<p>Hi,</p> <p>You can build project files for SD API v3 directly, instead of starting off with a different SD API version. See the <a href="https://github.com/NordicSemiconductor/pc-ble-driver/tree/v4.1.1/examples">examples folder</a> readme and the main readme section on <a href="https://github.com/NordicSemiconductor/pc-ble-driver/blob/v4.1.1/README.md#Compiling-pc-ble-driver-from-source">Compiling pc-ble-driver from source</a>.</p> <p>Instead of relying on the nRF Connect installation using the correct hex file, and to be 100 % sure you use the correct connectivity, you should use the DFU image from <a href="https://github.com/NordicSemiconductor/pc-ble-driver/tree/v4.1.1/hex/sd_api_v3">pc-ble-driver/hex/sd_api_v3</a> for programming the Dongle (connectivity_..._dfu_pkg.zip).</p> <p>You can also try out <a href="https://github.com/NordicSemiconductor/pc-ble-driver/tree/v4.1.1/hex/sd_api_v6">SD API v6</a>, for which a DFU image is also available.</p> <p>Regards,<br />Terje</p><div style="clear:both;"></div>