https://devzone.nordicsemi.com/f/nordic-q-a/1195/jlinkexe-write-code-whereI&#39;ve managed to get my 85122 dev board set up on parallels on a mac and get &#39;blinky&#39; uploaded to it using Keil and nrfGO studio. I then changed blinky to do something else, that was fine, got that version on the board. I don&#39;t have a softdevice onen-USTelligent Community 13Sun, 09 Feb 2014 00:34:02 GMThttps://devzone.nordicsemi.com/thread/5562?ContentTypeID=1Sun, 09 Feb 2014 00:34:02 GMT137ad170-7792-4731-bb38-c0d22fbe4515:cba0fcd0-2e64-40bd-8d09-e1d3557346efMatti Zemack<p>Hi,</p> <p>I have major problems getting nRF 8002 dev.kit (nRF 2748) to connect to the Parallells USB. I only and always get error 4; Unable to connect the USB device &quot;Future Devices FT232R USB UART&quot; to the virtual machine (error code 4).</p> <p>May I ask how you managed to connect nordicsemis to Parallels Fusion, I&#39;m guessing they&#39;re using same USB for all dev kits...</p> <p>Big Thanks!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/5563?ContentTypeID=1Sun, 22 Dec 2013 02:46:00 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1bc7b0bb-1c29-4ca6-881f-824f5764142fRK<p>Figured it out after a night&#39;s sleep, I had misspelled the device parameter on the JLinkExe command and it seems that&#39;s pretty important. Fix that and 0x00000000 as the place to write, worked fine. I&#39;m fairly close to having a decent working OSX environment.</p><div style="clear:both;"></div>