https://devzone.nordicsemi.com/f/nordic-q-a/49095/modem-updateI&#39;ve done this many times now and thought I understood the process. Now despite following most of the advice in the dev zone, I&#39;m stuck. Any help would be appreciated. nrf9160_mdm_dfu --update Traceback (most recent call last): File &quot;c:\python37en-USTelligent Community 13Thu, 27 Jun 2019 22:12:32 GMThttps://devzone.nordicsemi.com/thread/195228?ContentTypeID=1Thu, 27 Jun 2019 22:12:32 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6535ffd2-1773-4e65-8b40-44faebe96f3cJohn<p>Fixed it, somehow multiple versions of jlink were installed.</p> <p>Remove the lot and reinstall jlink as new instance.</p><div style="clear:both;"></div>