https://devzone.nordicsemi.com/f/nordic-q-a/57035/recover-nrf9160-dk-board-bootloderHello guys, I was working these days with nRF9160-DK board without any problem. Was able to update the firmware on it, to use it as a programmer for Thingy:91 etc... I don&#39;t know what exactly I did this morning but the board is suddenly invisibleen-USTelligent Community 13Tue, 28 Jan 2020 08:27:34 GMThttps://devzone.nordicsemi.com/thread/231313?ContentTypeID=1Tue, 28 Jan 2020 08:27:34 GMT137ad170-7792-4731-bb38-c0d22fbe4515:90d4a2a1-345a-4902-8444-55ed315d561fbojan<p>Hi, <a href="https://devzone.nordicsemi.com/members/amanda">Amanda Hsieh</a>.</p> <p>It seems that the problem was more on PC side than on nRF9160-DK. This morning, after restarting my PC, the board works properly.</p> <p>Thanks for your help and sorry for bothering you!</p> <p>Sincerely,</p> <p>Bojan.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/231304?ContentTypeID=1Tue, 28 Jan 2020 07:50:47 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b8981589-1ab2-43e6-9dcf-1316e62cf011Amanda Hsieh<p>Hi,&nbsp;</p> <p></p> <p>Please let me know this <a href="https://devzone.nordicsemi.com/f/nordic-q-a/53369/the-virtual-com-port-of-nrf9160-disappear">post </a>can help or not.&nbsp;</p> <p></p> <p>-Amanda H.</p><div style="clear:both;"></div>