https://devzone.nordicsemi.com/f/nordic-q-a/15601/nrf-connect-1-0-0-on-osx-and-redbearlabs-ble-nano-kitHello, I&#39;ve been trying to use nRF Connect 1.0.0 on OSX 10.11.6 with a nRF51822-powered board ( this one, to be precise ). Whilst nRF Connect finds the serial port and the board, I get an error message saying &quot;This adapter with mbed CMSIS firmwareen-USTelligent Community 13Tue, 16 Aug 2016 12:29:22 GMThttps://devzone.nordicsemi.com/thread/59515?ContentTypeID=1Tue, 16 Aug 2016 12:29:22 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9fb23f7e-6b60-456c-8f1b-0c82e408b348Bj&#248;rn Inge<p>Automatic firmware is not available with the board you have, so you will have to program the connectivity firmware manually (hex file is located inside app bundle in folder Contents\Resources\app\hex). Programming the firmware should allow you to get past the NRF_ERROR_TIMEOUT error. Beware that the USB problem will still create problems when long packets are used, e.g. when doing pairing.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/59516?ContentTypeID=1Tue, 09 Aug 2016 08:28:46 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a1c59855-3cbb-484c-9b6e-b17a7d50c769&#216;yvind Karlsen<p>Hi,</p> <p>Are you using the board with an Mbed CMSIS bootloader? In that case it is not supported within nRF Connect.</p> <p>Best regards,</p> <p>Øyvind</p><div style="clear:both;"></div>